Mac hard disk failure and File Rescue

Data recovery is one of the most technical and complex activity because it is directly associated with the device i.e. hard drive which itself is so complex. Leave the business men it is enough to increase headache level of even some IT professionals.  That is one of the many reasons that data recovery companies can easily charge smart amount, sometimes even for any small task.  This article will provide you some basic knowledge of data recovery:-

Hard Disk Basics
Computer hard drive is a storage device which stores data into metal oxide platters. It has to perform continuous and very fast rotation (About the rate of 12,000 rpm) while read/write operations. The One, which perform this read/write operation on the Meta oxide platter, in the form of magnetic charge, is called head. A drive can have multiple read and write head and each head to perform operation smoothly and quickly.  But this also arose a problem that each head can crash independently, so probability of head crash always remain higher especially when temperature of  disk started increasing due to kinetic energy produced due to head motions. The main part of drive is controller board which unique for every individual drive located in outer part of the platters and it contains firmware zone, the firmware zone is the area which communicate with the computer directly.

Type of hard disk failure:
Hard disks are always handle with care because they are very sensitive and above all they actually having our precious data.  Worst is they can suffer damage in different ways (described below) and with each type of damage in hard disk there remain possibility of data loss.  Let discuss each type of damage and probability of data loss and its recovery:
Logical Errors:  Logical errors of the are most simple (sometime most complex) type of error. These errors are meant for file system corruption, not affecting the data directly.
     Symptoms: File inaccessible, system response increases and program may     not work properly
     Solution:  Such errors are seems to be simple, nothing is going to happen wrong the data until and using right data recovery software you can get your data back. Here “right” also means that choosing inappropriate data recovery software can make your data beyond recovery. Logical errors are simple but complicated errors you can get your data back by using branded mac file recovery software. Chances of recovery of data are very much high.

Mechanical Failure: Such errors are more serious and it may cause partial or full data loss. These type of errors occur due to head crash at the time it performing read/write operation on platters.
  Symptoms: Hard Drive becomes noisy!! Most probably clicking or grinding noise start flushing out
  Solution: This is most technical part which needs professional training to solve it. Replacement of read/write head is to be done manually. So, you might have to send hard drive to data recovery lab.  Make sure about the privacy policies of the company before sending the hard drive because your hard drive may have your personal data that you would not like to share with anyone. Such errors need both time and money and chances of recovery is totally unpredictable.

Bad Sectors: These are the areas which OS usually ignore while performing reading and writing operations. These are like big holes in the road which need to be avoided by drivers.
  Symptoms: As such no indication will be shown for bad sectors
Solution: It could happen anytime with hard drive and the data present in that section would become inaccessible. So best solution is just to avoid loss that may happen due to bad sector. So prepare cloning or imaging of the hard drive can be a good preparation against bad sector.

Researchers say that most of the time data loss happens due to the human mistakes. Follow the points below to reduce the chances of data loss:
•       Do not avoid any uncertainty of the system
•       Do not trash out the things which you are not sure about.
•       Always keep backup of your important data
•       Keep trusted mac data recovery software handy

Recover Mac files from Mac OS X Lion & Later

 Hard drive is nothing but data warehouse where files is stored in certain logical manner. The operating system has responsibility to define these logics which are commonly known as file systems. Mac OS X is considered as worlds most powerful operating system in term of security, functionality and usablity. The file system which they use is HFS+ (journaled) which is one of the best well defined file system of the world. But despite of all above feature data loss is very common in Mac.


The most common reasons of data loss in Mac is unexpected file system crash. Some of them are listed below-

    *  System crash and Mac shut down accidentally
    *  Catalog File corruption
    *  Corruption of partition table
    *  Mater File Table corruption
    *  Hardware failure

All above problems are very common in Mac. Worst is it might happen to anyone anytime, it may happen when you woke up in the morning and your Mac refuses to boot and all the files inside the Mac would simply become inaccessible. If that happened due to any file system error disk utility can repair it easily but chances of data loss is mostly likely but if happened due to hardware failure you would need another Mac supported hardware to access that Mac.

In case of file system error, simple hardware verification is more than enough to solve any such issue (to read more visit “http://drive-recovery-mac.blogspot.com/2011/06/file-system-verification-failed-my.html). Although chances of data loss is very less in this case but still keeping mac file recovery software is always keep your mind out from sense of data loss. Yes choosing such software is also not an easy job but once you chose it will always keep you aways from sense of danger.

Other reason of boot failure is hardware issues. If you were facing boot failure due to hardware failure you need to have another Mac supported OS X installed hardware (or another Mac) to resolve this issue. To resolve this limitation Apple introduce new features with latest OS X lion release and they are-

Recovery Hard Drive – The auto installed hard drive hidden partition that could be useful to boot Mac OS X in time of need.

Disk Assistance - It is same as recovery partition but Apple made it supported to external drive. (Visit Lion Recovery Disk Assistant for complete information)

If you are using lion then this task is again not that much complicated. You only need to press “option” key while booting the Mac and choose recovery disk to boot the Mac. But if you are using any other Mac version (external hardware) you need to boot your Mac targeting that disk. Once you boot your Mac you can repair any issues simply by using disk utilities or any third party Mac tools.

What to do when HFS file got corrupted In Mac

HFS is the most important file system of Mac and its corruption makes Mac OS X hard drive volume un-mountable hence it cannot be accessed using normal methods. The file system corruption might be indicated by various symptoms, which include an error message that pops up when you try to mount the disk volume.

The error occurs every time you try to mount the disk volume. In order to sort out this problem with your Mac machine, you need to find out the root of this issue and then fix it using HFS recovery solutions.

Reason
As stated above, the problem occurs due to corruption or other internal problems with Mac OS X file system. File system may face inconsistencies due to a wide range of issues

Solution

In order to recover Mac data in such cases, try out any of the below methods-
Try repairing the affected Mac OS X hard drive volume using Disk Utility. It is an inbuilt tool that helps you fix minor disk problems.

Run FSCK command on Terminal in single user mode. It is the command-based version of Disk Utility.

Format the hard drive and reinstall OS. You must use this option as a last resort only as it removes your precious data from the hard drive and cause further data loss.

Recover lost data using Mac file recovery software. The applications are particularly designed to extract lost data in all data loss situations.

Mac Recovery software to Recover Your lost Data

You may ponder at times that the Mac system was just working fine before a hard boot and not responding now. There can be a number of possible reasons behind the same. It can be a virus/malware attack, a corruption to the file system, operating system malfunction or may be some contradiction with any other installed application. But, at the end of it, the only thing that comes into your mind is that the data in the Mac hard drive is completely inaccessible and you need to perform any Mac data recovery operation to retrieve back the data.

Among all this panic of loosing valuable data, one soothing fact is that whatever be the reason behind the data loss, your data from the media is never gets permanently lost. The data is quite safe and lies almost as it is somewhere in the media memory until that is being overwritten by some other data. Hence, if you can guard your data against being overwritten, you have ample chance of recovering the same.

These data recovery Mac software are developed with various innovative algorithms to search through the Mac OS X based media and retrieve the data back. These advanced Mac recovery software are completely read-only in their recovery operations and you need not have to worry a little for any kind of data erasing or modification. Moreover, with rich graphical user interface and well described instructions, any user without having much technical knowledge can also be able to use the software without any other assistance.

Mac file recovery: What to do when my file system get corrupted.

Though the Mac machine are very much efficient in accomplishing the everyday works and are built with all the advanced technology, still it does not mean that one can not face any instance of data loss with Macintosh. Macintosh users do face data loss sometimes, data loss can be so accidental that it may not be prevented. In all such tragic and unfortunate situations, Mac file recovery is the software to recover all your valuable data back.

Sometimes, with any unexpected power failure, if the Macintosh machine suddenly shuts down, it shows an error message, the next time you try to boot the system. With the error message popping up every time you try to start-up, the system may fail to boot further.

The error message may be as follows:

"-127 error disk could not used/found"

The cause behind the error message, you encountered can be a possible corruption to the directory structure/file system of the hard disk. The file system or the directory structure systematically stores the data, when there is any operation on the hard disk and if that is suddenly interrupted in the middle, the information gets corrupted. After this, the next time you try to boot your Macintosh machine, the OS can not be able to fetch the information with respect to the last operations and the whole hard disk becomes inaccessible thereof.

Resolution:

Run the Disk Utility from the recovery console and repair the damaged file system

If disk utility fails, you may try the 'fsck' utility to check and repair the file system.

If you failed to resolve the issue with both the above methods, you are left with the only choice to format the disk and make fresh partitions. After that you can restore the file from any previously taken backup. However, you have not taken any backup recently, use any File recovery Mac software to bring back the formatted fie.

These Mac file recovery software are very powerful to scan your troubled drive and retrieve all your data quite efficiently. Moreover, with their easy-to use features, any user even without much technical knowledge can also use the software.

Mac recovery :Upgradation to Mac OS X 10.5 Leopard

Every other day, we come around some new enhancements to Our system and hence, upgradation  to newer ones is quite common. To perform this process certain steps to be followed as given in the user manual and the rest will be done automatically by the application itself.
   
However, with some of the applications, this is not as smooth as it is said. While trying to upgrade to Mac OS X 10.5 Leopard, sometimes, you can only get an option of 'Erase and Install'. Even, the installation process gets interrupted with an error message and the hard drive becomes inaccessible thereafter. The situation can only be handled with any Mac data recovery utility, as the drive carries your valuable data in it and you can't afford experimenting, which may even damage your critical data.

The error message in the above situation can be as below:

    "You can not install Mac OS X 10.5 on this volume with out changing your installation settings.”

Such a problem can be the outcome of a variety of reasons. One of the prime observation says that if you have used the tool 'TechTool Pro' in order to create an eDrive on the destination volume, then the problem as above usually happens with Mac OS X 10.5. Apart from this, the check process of the Leopard through the hard disk can cause such a problem. Mac OS X 10.5 makes a complete scan of the hard drive before it lists the drives & volumes in the destination window and if it fails, problem like the above surfaces.

Resolution:

The problem can be resolved by fixing the errors related to the hard disk. For this, you can use the tool Disk Utility, which is meant to verify and repair the storage device. Insert the Mac machine installation disc and run Disk Utility from there to fix the errors in the hard disk.

However, at times, Disk Utility application also fails and throws error messages such as: "Incorrect number of Extended Attributes (it should be 0 instead of [some numbers])"

If the Disk utility fails, the only way left is to Erase and make a fresh installation. In that case, you have to restore the lost data from the previously taken backup. In case, backup is not available, you can recover your data only through any Mac recovery software. These Mac recovery utilities are powerful enough to recover your data under any instance of data loss and along side, are easy to use.

Mac file recovery Solution in case of kernel panic

Sometimes, the Mac OS X based systems behave unevenly, leaving your data in the disk inaccessible. Usually, it is difficult to sense the reason behind the problem and hence, initiating an immediate trouble shooting becomes difficult. Such situations compel you to think about any Mac recovery utility to safely recover your data without causing any further damage to the media or data.

The Problem: While starting your Mac OS X based system, a prohibitory sign or a Broken folder icon or kernel panic appeared on the screen. The system failed to boot further and all your data remained inaccessible.

Probable Cause:
There can be a number of possible reasons behind the above issues. However, in general, the primary cause may be either the corruption of the file system or the NVRAM is not working properly and needed to be reset.
 

Resolution: 

Follow the below steps exactly the way it is to resolve the issue:
1) Start with reseting the NVRAM and reselecting the startup volume. This process may change certain system preferences, such as volume, mouse speed settings etc.
2) Then, try restarting the system with the key 'X' pressed. If the system doesn't boot-up to Mac OS X, then check the disk using Disk Utility by going into recovery console.
3) If the system couldn't read the system disk or the Disk utility couldn't find any issue or the Disk utility failed to resolve the issue, it found, then try reinstalling the OS with Archive & Install option, instead of Erase & Install.
4) If Archive & Install failed to resolve the problem, then Erase & Install is the only option left to solve the problem.

However, Erase & Installation process will erase all your data from the drive and you need to restore the data from the updated backup. If valid backup is not available or due to any reason, failed to restore the data, then you can try running any Mac file recovery software to bring back the formatted data.

These Mac data recovery software are indeed powerful enough to search for the formatted data in the hard drive and restore them back to their original state. Moreover, their easy to use feature makes you absolutely stress free while using it.

What to do When Finder corruption issue occurs in Mac OS

Over the years, the Mac OS has been improved upon its preceding versions in terms of speed, efficiency and User friendly  interface. The Finder is the best example of the same. Finder is an added application by Apple that comes with Mac Operating System, it allows us to manage almost everything on our Mac machine, such as our files, folders, application and shared drives on the network. In certain circumstances, the Finder fails  and many applications in our system don't work thereof, even we may not be able to view anything on our Mac machine . These situations leave us stranded, 

Cause behind the problem:

Finder learns the applications at the system start-up and stores the information about the files that it manages. As the Finder manages every single application on a Mac system, any error in the Finder file, may lead to the above discussed scenario.

Brief about Finder:

Mac Operating System incorporates Finder as its default file manager, which makes the organization and access of Mac files more comfortable for the user. Features like rich preview of files and attractive GUI make Finder almost a necessity. Apart from this, Finder maintains and stores the view of the file system, that is the files, folders, directories inside the Mac. Furthermore, Finder adds many feature for flexible usage, such as New folder command, Shutdown command, quick lunch option to access frequently opened applications etc.

Resolution

In order to resolve the error related to the Finder, we need to check, whether the Finder is enabled or not. For this, we have to check the Finder preferences. 

However, if we still fails to view any file/folder on the desktop, we need to ensure a fresh installation of the operating system. Fresh installation requires formatting of the storage media and if we don't have updated backup with you, it is sure that we are in a verge of loosing mac files data. Hence, to recover the invaluable data, Help of mac recovery software is needed.

Mac file recovery: Solution to System Crash after installing Photoshop CS2

Sometimes, some applications are not throughly tested for backward testing that is for compatibility with the previous versions. An instance of such compatibility problem arises when a new version of Photoshop CS2 is installed on a Mac OS X system with versions below 10.4.7. The situation fires a no of error messages leading to the loss or inaccessibility of data and to recover back your valuable data, Mac recovery comes into play.

Scenario:
On your Mac system, you just downloaded and installed a new version of Photoshop CS2. While restarting the system for the software to take effect, you witness the following problems, which propelled you to think of some Mac recovery options. The problem can be any of the following or even multiple of it.

Error:
-File system error
-I/O error
-Illegal Name error when you run Disk Utility
-Boot error
-System crash or slowdown


Probable causes:

There lies certain problems with some Mac OS X versions, such that they report illegal file names, when they read some of the used font data in the Vietnamese End User License Agreements. This information is installed in the Legal or legal.localized folder. If the particular files with those Vietnamese fonts are not deleted, it leads to severe file system corruption. Furthermore, if the file system is not repaired, it also leads to complex corruptions to the hard disks.

Resolution:

·     Try to go to the following directories and delete either the 'legal' or 'legal.localized' folder:

-- Applications/Adobe Photoshop CS2/

-- [Username]/Documents/Adobe Help Center/

·     Run  the Disk Utility in order to repair any file system error that has already occurred. Follow the following steps:

1. Insert the Mac OS system disk. Hold the key 'C' and restart the computer, .

2. After the computer restarts, select the language you prefer and choose the Disk  Utility from the Installer menu.

3. Then, choose the tab named First Aid.

4. Choose the Mac OS X disk that carries the operating system in it, that is the one on  the left side.

5. Click on the option 'Repair Disk', which is meant for finding and repairing any  Illegal names issue.

·     If after following the above measures, the problem still persists, then try to restore the data from the latest backup. In case, if the backup is not available, then, try any trusted Mac recovery software to retrieve your lost or inaccessible data back from the troubled media.

The third-party Mac file recovery software are safe and don't mean any harm to the original data or to the media. Moreover, these Mac data recovery utilities are very much flexible in their usage and you can use them almost effortlessly.

What to do when face with error- 60 "bad master directory block" In mac OSX

In Mac Machine, the Master Directory Block stores a variety of information about the volume. Though, there is another duplicate copy of the Master directory block at the second-last of the meta data, sometimes the corruption is critical and cumulative. These kinds of situation leave you ponder about your valuable data stuck in the Mac hard drive and you have to think of Mac data recovery or any available Mac file recovery software.

Scenario:

You just tried to zap your PRAM and immediately, got a gray screen. In a haste, you put your OS installation disk to repair, if anything is wrong. But, to your dismay, the next time you started up your system, you received a dark screen with a message to restart it again. Sometimes, when you are able to boot your system properly, you receive a flashy question mark on the hard drive icon and sometimes receives an error message halting the system. The error that you receive, may read as below:

Error:

“- 60 bad master directory block  ”

Probable cause:

There can be more than one cause behind the issue. First of all, as you are getting a flashy question mark instead of the hard drive symbol, it is likely that the Mac is not getting the start-up disk. Furthermore, there may be some corruption to the MDB.

Resolution:

Try to set the PRAM back to factory settings by pressing the keys COMMAND, OPTION, P and  R 4 times. During this time, the Mac must chime 4 times, then restart the system and re-adjust the needed preferences.

If the drive is accessible, then, do the update or reinstallation of the device driver using any formatting software. However, be careful, not to press either the initialize button or format button.

If the above steps failed to resolve the issue and the drive is inaccessible, then use any effective Mac data recovery software to recover back your inaccessible data inside the drive.

Though, at the beginning of any issue, we try to resolve it, however, sometimes the problem still persists in spite of our error resolution steps and there, it is wise to think of Mac file recovery for retrieving the data in stake. Because at the end of everything, it is our valuable data that is inaccessible and we want to resolve the problem in order to access them.

These Mac file recovery software are immensely helpful in retrieving the deleted, formatted, corrupted or inaccessible data from any type of storage media. Along with their efficient Mac data recovery mechanisms, they are easy in their usage and will definitely pour in confidence and satisfaction while using.

Disk image corrupted in mac what to do now?

Before looking into the solution, first of all what is Disk image in Mac machine mac disk image is the file that stores all the contents and structure of our storage device. Disk image is most widely used to backup all the precious data stored on the hard disk.creating disk image is the best option to prevent data loss but sometimes when the mount operation is performed we may face the following error message:

“The disk image you are trying to open may be damaged and could damage your system.”

Mac machine detects the damaged disk image before mounting it as the corruption in it may cause data loss. In such conditions,the data can be restored from the .DMG file and thus the need of mac file recovery software arrives to fix the problem.

Mac File Recovery is the process in which scanning of hard disk is done for extracting the missing, lost or inaccessible data/file. It may help us in most of the data loss situations 

Mac file Recovery Software to take care of Boot Camp Errors In mac machine

The current versions of Mac OS X  lets you install Windows OS on your Mac machine, by making it dual-boot. It is possible through  Book Camp. The configuration is pretty easy and safe for the Mac files. After completion of the installation, you can boot your computer either using Mac or Windows OS. however, sometimes, the Boot Camp process may fail halfway and make your system unusable. This behavior calls for hard drive formatting, which eventually causes data loss.

When the dual-boot confirmation fails, you may not be able to boot the system if you use Mac OS X . At the time of failure, you may encounter error messages similar to the following:

“The Disk cannot be partitioned because some files cannot be moved.
Back up the disk and use Disk Utility to format it as a Single Mac OS Extended volume. Restore your information to the disk and try using Boot Camp Assistant again.”

Similarly, if you try to remove the Boot Camp volume, the below error occurs:

“The startup Disk cannot be partitioned or restored to a single partition.
The startup disk must be formatted as a single Mac OS Extended (journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.”

Cause

You may encounter this problem if your Mac OS X hard disk  is corrupt or inaccessible by the Boot Camp program. In case you try to remove the Boot Camp partition, the error occurs if Windows partition is set as active.

Resolution

Try using the below mentioned steps to carry out hard drive recovery and resolve this behavior:

A)     Format the Mac  OS X hard disk and install both  the OS from scratch.

B)    Reboot your system  using Disk Utility and then remove the  Windows partition.

C)     Restore data clean backup.

In case you  go for hard drive formatting and do  not have a clean backup,  File recovery  Mac software becomes need  of hour.

Mac File recovery programs are  incorporated with highly-advanced scanning mechanisms  to thoroughly scan entire hard drive and  salvage all lost data from it. These  programs are capable of handling all data  loss situations.

Mac file recovery :Desktop DB file corruption in Mac

In a Mac machine ,the Desktop Data Base files are invisible files which can not be located by normal users. The files were originally created by the Desktop Manager to maintain the information in addition to the Finder's Desktop file at that particular time. Finder's Desktop file contains information about virtually everything on your Mac machine including applications, hard disk, files and folders etc.

However, if these files get damaged, you won't be able to access your data. Whenever you try to access a file or start an application, the process will halt with an error message stating that the desktop database is corrupt and you need to rebuild it by deletion and recreation. Hence, to get back your valuable data, you need any good and effective Mac data recovery software.

The Error message may read like:

“-1305 desktopDamagedErr The desktop database has become corrupted - the Finder will fix this, but if your application is not running with the Finder, use DTReset or DTDelete”

Reason:

These kind of errors arise due to the corruption of Finder's Desktop DB file. Following are some of the reasons behind the corruption of the file:

1)  Grown size of database etc.

2    Conflict of system data structure

3    Virus and worm infection

4     Improper system shutdown

Solution

You have to rebuild the Finder's Database file to fix the above issue. Follow the steps to carry out this task:

1)   Restart the Mac machine  and press OPTION and COMMAND keys and hold them throughout the time of startup.

2)    When startup process completes, a confirmation dialog box with the message “Are you sure you want to rebuild the Desktop file” will pop up. Release the OPTION and COMMAND keys and click “OK” button in dialog box.

3 )   If the above method fails, you need to use DTDelete command to delete the database and recreate it.

The above process will definitely resolve the issue by recreating the DBF files, but all your valuable information from the hard drive will be removed causing severe data loss. The situation demands only File Recovery mac to help you retrieve all your lost data.

These Mac file Recovery tools use high-end scanning algorithms to carry out in-depth scan of the hard drive and recover back all your lost or inaccessible data. These software are risk free and with their interactive graphical user interface, quite easy to use.

Fixing "No Mountable File System" Error in Mac OS X

In Mac Operating systems, Disk Mounted Graphics files are dealt like real disks. You can mount these image files as normal hard disk volume. This file format enables you file compression as well as well as it secures password and thus acts as both file distribution and security functions. You can easily create Disk mounted graphics files with the help of Disk Utility in Mac OS X 10.3 and later versions. You can easily access data from Disk Mounted graphics files after mounting them. However, in some cases, such files fails to mount and you can not access data from them. At this point, you may lose your inportant data and need Mac file Recovery tools to deal with such situationa.

In a practical scenario, when you try to mount a DMG file on the drive using Finder to access data from the file, you might come across below given error message:

"No mountable File System"

After this error message, the file become inaccessible along with all its data. In order to access data from the file, you need to find out the cause of this problem and perform File Recovery Mac operations by sorting it out.

A)    Mount-
           It is the process of making Personal Computer  file system ready to use. After mounting the drive or Disk Mounted Graphics file, it's contents can be accessed.

B)    Finder-         
           A Macintosh OS X application that manages user files, network volumes, disk, and launching of applications.

Cause
When you try to mount the Disk Mounted Graphics file, OS does not get file system in proper format for mounting the image. The file system is either damage or missing. Because of this reason, the Disk Mounted Graphics file may become unusable and you face severe data loss situations.

Resolution
Use Disk Utility  tool to check the integrity of the file. The tool checks the file for errors and if it detects any error,and then it try to fix the error. If Disk Utility fails to resolve the problem, perform Mac file Recovery using third-party applications

Recover data from Time Machine in mac

Time Machine is an advance and popular data backup tool thats take backup of all the data regularly in 10.6 Snow Leopard OS and Mac OS X 10.5 Leopard mac machines . It is invented to work with Time Capsule Universal Serial Bus and FireWire hard drives. The software helps you to restore entire data, selected files or even a single data file. This backup tool stores current state of data on your Mac OS X hard disk. However, you may face some critical data loss problems with Time Machine volume after installing updates of Mac OS X 10.6 Snow Leopard.

Time Machine backup volumes becomes inaccessible After installation of the updates. The “Get Info” window is safe only for checking size of file, folder, or hard disk volume. You should not click the permissions tab at bottom of the “Get Info” window, because this may result into data loss .
Sometimes the permissions can be changed successfully using Terminal application, however in some cases it may make your system unbootable, leading to serious data loss conditions.

TO resolve this issue these steps should be followed

A)  Remove your hard drive, both Time Machine backup disk and data disk.

B)  Perform Archive and Install installation of Mac OS X 10.6 Snow Leopard operating system.

C)  If it does not work, perform Erase and Install installation of the OS.

D)  Format Time Machine backup drive using another Mac machine.

E)  Backup data on Time Machine disk again.

When you go through the above steps, you may possible sort out your problem from system point of view, but you come across several new problems related to your data. Erase and Install installation of Mac OS X operating system removes all the data from hard drive and leads to critical data loss situations. At this point, need of  File recovery mac solutions arise.

Mac time machine recovery is best possible using powerful commercial applications to recover time machine from mac system. They comprise of high-end scanning methods to thoroughly scan entire drive and extract all inaccessible data from it. Mac file recovery software do not demand sound and prior technical skills as of their interactive graphical user interface.

Mac file recovery:How to Restore/Recover Lost Data from Mac OS X Hard Disk?

The data stored on your Mac OS X hard disk is extremely important; Hard disk is N.V (Non Volatile) storage device, considered safe with respect to tap drive and floppy disk. It stores your Important data on moving platters. R/W head is used to read data from and write data to the hard drive. Under some circumstances, your Mac hard disk may Fail and stored data may become inaccessible. This behavior leads to  data loss situations and raises the need of Mac file recovery tools.

When Mac hard disk goes bad, you may not boot up your Machine . The most common symptoms of a Failed Mac hard disk are as given below:

1)     Your system fails to boot up.

2)     The Mac machine reboots automatically.

3)     You can not boot your system using installation drive of Mac .

4)     You get errors while accessing any particular volume of your Mac hard disk.

5)     Hard disk volumes can not be mounted.

All the above signals hard disk failure .

There are numerous reasons that may make your hard drive failed.

·     The Master Boot Record of your Mac OS X computer is damaged.

·     The boot sector or boot loader of your system is corrupt.

·     Operating system itself is damaged.

·     The file system of your Macintosh computer is corrupt.

·     Hard drive is RAW.

If you come across any of the above situations, you need to fix the particular problem to perform File Recovery Mac.

You can try out resolving this behavior of Mac OS X using mac disk Utility tool. It is an inbuilt utility of Mac OS X operating system that checks integrity and consistency of your hard disk. In case it fails, Mac file recovery software becomes need of hour.

Starting error in mac machine

Does the Mac machine with you is displaying errors while booting? this behavior may occur because of missing or corrupt file system of your Mac OS X machine. At this point, you fails to log into your Mac computer and thus all your important data becomes inaccessible. It leads to data loss situations and needs Mac file recovery software to fixe the error, specially if there is no backup in place.

In reality this things arrives when you come across error while booting your Mac OS X 10.5 Leopard computer. The system stops responding and displays a circle and a line in the center of it. Mac OS X does not show any error message at this point. All your important data becomes inaccessible after this behavior.

The problem generally occurs because of many reasons like Virus attack, missing boot sector, corrupt boot loader, boot partition corruption, damaged OS, file system corruption, and hard drive corruption.

1)      Reboot your system by holding down the power button for few seconds.
2)     Check file system integrity problems using Disk Utility or fsck and fix them.
3)      Make sure that your hard drive is not full and you are not running out of disk space on system volume.
4)     Repair permissions of Mac OS X operating system by booting the system using boot DVD and using Disk Utility.
5)     Create an additional user account and boot your system to it.
6)     Start the system in SafeBoot mode. It is a troubleshooting mode of Mac OS X operating system.
7)     Remove all FireWire and USB devices, except mouse.
8)     Remove third-party RAM and other hardware components.
9)     Perform 'Archive and Install' installation of Mac OS X.
10)   Reinstall Mac OS X from scratch.

You should only reinstall the os as a last resort. It removes all the data from your hard disk and leads to further data loss. In such cases, you have to use Mac file recovery software to recover lost data.

File loss in Mac due to rm-rf and sudo command

Mac Operating system is a multi-user OS, which enables you to create unique account for every user. we can store all our confidential and personal data to this account. The most powerful or significant account on Mac machine is a superuser or administrator account. However, in some situations, you may need to run several applications with security permissions of other user. You can do it using ‘Sudo’ command. But, you should keep in mind that improper use of this command can cause serious data loss and put you in need of Mac file recovery solutions.

Sudo is a powerful command of Mac OS X it enables us to run the Mac applications with permission from primary user. This function is usually employed to obtain temporary permission  to superuser privileges and modification of files is possible through this command.

The Sudo command also help us in releasing extra hard drive space, with the help of ‘rm -rf’ command. It can be used to remove useless files from hard disk so that it can be used to store new files. But this command should be used with lot of caution. Any sort of mishandling or typographical error while using this command can cause critical data loss conditions. Even a single use of space unnecessarily can lead to permanent deletion of data from Mac OS X hard disk.

If you come across such situations,first thing we should do is to stop panicking. The deleted files are still there on our hard disk and it is possible to recover them using file recovery software for mac.

Mac file recovery is best possible using effective data recovery utilities. They recover lost file from the mac machine quite safely, without modifying original contents of the file, with read-only and non-destructive conduct. You need not to be technically sound to use these applications, as they have self-explanatory efficient and highly interactive Graphical user interface.

Mac File recovery: Fixing The disk is unreadable Error

Macintosh operating system is a very powerful operating system with lot of advance features like it supports a number of storage media like USB drive, hard disk,CD, DVD, external hard drive, USB drive and memory cards to store your important data. The external hard disk is basically used to take backup of your valuable data and to safeguard your data. It can also be used to transfer data from one machine to another. However, in some cases, the external hard disk may become inaccessible and critical data loss situations arrives. At this point of time, you need to perform Mac file recovery to recover all the data.

Sometimes, Macintosh OS X fails to read the external hard drive. When you attempt to extract data from an external hard disk, The below error message is displayed

“The disk is unreadable: Do you want to initialize it now?”

After that if you try to repair the error using the disk utility the following error messages are displayed

“Verify and Repair volume “disk1s3”

Checking Journaled HFS Plus volume.

Invalid node structure

Invalid B-tree node size

Invalid node structure

Invalid B-tree node size

Volume check failed.

Error: File system repair failed.”

As described in the first error message, your Mac OS X hard disk needs initialization. But this process removes all your valuable data from hard disk.

If you fail to replace the damaged system files without formatting hard disk, you need to use Mac file recovery software to retrieve lost data from hard drive.

Superblock corruption and data loss in mac

Mac OSX supports external devices to create backup, store your data, or for installing an OS. You can access data from external hard disk by simply attaching them and then using mount command to mount them. However, in some situations, an external hard disk is mysteriously un-mounted by Mac OS X Machine, while storing data to or accessing data from the disk.

This sudden behavior of Mac OS X makes your hard disk inaccessible and cause severe data loss. In order to get your valuable data recovered in such cases, you need to go for Mac data recovery solutions, if there is no updated backup in place.

Some times you comes across below error messages while working

“Mount: wrong FS type, bad option, bad superblock on /dev/hdb1,
Missing code page or other error
In some cases useful info is found in syslog- try dmesg tail or so”

Or

“Unknown device”

This means that you either have to ‘Initialize’ your Mac OS X hard drive or to ‘Cancel’ the ongoing  process, this whole scenario can leads to inaccessibility to  your data . To retrieve data from the hard disk, you need to find the main reason behind this behavior of your machine and after finding that you need to perform File recovery mac operation by the use of data recovery software's available in the market.

Main reason behind the issue

As mentioned above, the problem is generally due to corruption to the superblock corruption which may be caused by various reasons, like improper system shutdown,virus infection and operating system malfunction

How to resolve it

In order to sort out the problem in  Mac OS, you need to get your damaged data structures replaced by formatting the hard disk and reinstalling OS. However, it removes all the data from hard disk and create needs of Mac file recovery software.