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

Performing Mac data recovery when Time Machine corruption causes data loss

Data plays a very important part in today's techno savvy, computer driven business environment loss of data may occur to even the most secure and the safest Machine, what so ever the hardware and software configuration be.To handle this situation of data loss the Mac machine comes up with a unique utility "Time Machine" it prevents all the situation of data loss by taking a regular backup of all the data the backup takes place in according to predefined schedule it takes a backup of all internal and external storage devices this utility ensure absolute Mac recovery in all data loss cases.

Although, Time Machine application supports external hard disk to store backup data, but the drive must be formatted using HFS+ file system. In case external hard drive is using the MBR partition type, then you may encounter serious issues.

The External Mac OS X hard drives that are using MBR disk partition types do not accept over 10 GB of data from the Time Machine utility. Thus, if you use Time Machine to backup data on such disks, backup process may stop once the size approaches 10 GB. So you cannot use Time Machine backup to restore data from external hard drive in such situations and Mac recovery is required to sort out the problem. 

Resolution
It is essential to change the hard disk partition type to properly backup your valuable data on external Mac hard disk. It is possible by formatting the hard disk using HFS+ file system. Formatting is the complete solution to effectively fix all hard disk problems, but  it also removes the stored data.

In order to recover Mac files in such situations and perform data recovery Mac, you need to restore data from backup. The most recent data backup is the best Mac data recovery method. However, if backup is either not updated or valid, you need to go for alternative Mac recovery solutions.

TDM Error and Mac data recovery

Apart from the normal boot mode, in the Mac systems, there is another special boot mode called 'TDM' or 'Target Disk Mode'. The Mac systems, which have been started in the TDM boot mode, behaves as FireWire drives. The Macintosh system started in TDM mode, does not boot and can get attached to any FireWire port of any other system with the options for formatting, partitioning or transfer of files. However, if you try to mount the disk that has been started in TDM mode, it fails to boot and the data in the drive becomes completely inaccessible. In such a situation of data loss or inaccessibility, you have to opt for any Mac recovery software to recover and restore your valuable data from the troubled Mac drive.

In the above instance of data inaccessibility, when the Mac drive fails to mount, you may encounter an error message, which can be read as below:
“You have inserted a disk containing no volumes that Mac OS X can read”
The error dialog box that you receive may contain three options, such as Initialize, Ignore and Eject, among which you must either opt for the option Eject or Ignore to close the error dialog box.

Cause:
The reason can be pretty simple that the drive must have been formatted in a non-Mac format, including any FAT or NTFS file system type. The Mac OS X can not be able to recognize the disk drives, which has been started under TDM mode and formatted with NTFS or FAT32 file systems.

Resolution:

In order to resolve the above case, you need to format the hard drive in a Mac Os X supported file system. You have to connect the drive to any Intel-based Macintosh system and format using the Disk Utility.

However, with formatting and a fresh installation of the operating system, all your data from the drive will be lost and you have to restore them back from a valid backup. If you do not have any valid backup or failed to restore from the backup due to any unresolved issue, then, the only option, which can help you recover back your seemingly lost data is to run any Mac recovery utility.

Disk Utility failed, How to repair mac volume

Every OS faces some kind of problems that make it unusable, no matter how stable and powerful the operating system is. Even the most reliable OS Mac OS X can face problems that can lead to data loss. In order to handle such situations, to prevent data loss, and needs of Macintosh data recovery software; Mac includes Disk Utility application.

Though Disk Utility is a powerful utility that is capable of handling a number of issues with Mac OS X hard drive, however, there is no guarantee that it will work in all cases of system failure. There are some situations where Disk Utility may fail with the following error-

"The underlying task reported failure"

Subsequent to the above error message, when you check the Disk Utility log, it shows "-9972" error code. The error code - 9972 signifies that the volume's disk structure is damaged and cannot be verified/fixed by the tool.

Cause

The above error occurs due to severe corruption to the disk structure or the file system. Corruption can occur due to various reasons, such as virus infection, improper system shutdown, user error, and disk data structure damage. Disk Utility cannot handle serious damage and you need to use other Tools to repair mac volume  and fix the issue.

Solution

Try out the below methods to sort out this behavior-

Use fsck command through Terminal to repair mac volume. You must run the fsck command in single user mode. Alternatively you can also start the command from a different hard drive volume.

Use third-party system utility to repair your Mac OS X hard drive. You are highly recommended to create a complete backup of your significant data to prevent data loss and need of Mac data recovery due to any conflict.

If none of the above methods work, you will have to perform 'Erase and Install' installation of Mac OSX  OS Although, it resolves the issue, but also deletes all the data from hard drive.

To perform data recovery Mac in such cases, Mac file recovery software are required. The file recovery Mac software uses advanced HFS recovery algorithms to effectively recover Mac data.

HFS+ recovery software lets you recover Mac files on your own, as of their highly-interactive user interface. Mac data recovery software preserves absolute integrity of your data with read-only conduct.

How to recover Photos from mac machine

Macintosh machines are very advanced in terms of functionality and features. For this reason, designers and graphics editors are always choose Mac over any other system. Mac OS X incorporates many excellent utilities for creative designing and with their simple to use nature, normal users also able to design and edit images, videos and other multimedia files with ease. In day to day life, many users like you store valuable work, such as photos, music, videos, movies and other multimedia files in the Mac hard disk. However, even the advanced Mac machine is not under the claws of data loss situations and such loss of precious photos and other multimedia files can be recovered back using any Mac recovery software.

 In case of file system corruption, even you can not be able to access your system leaving all your files, photos, documents completely inaccessible. Apple has designed a disk repair utility in the name of 'Disk Utility', which can be used to find out the disk errors/file system corruption issues if any and repair them.

However, if the corruption is very much complex, then even the Disk Utility fails to repair the issues and flashes error messages that can be read as below:

“Verify and Repair Volume ‘disk1s3’
Checking Journaled HFS Plus volume.
Invalid B tree node structure.
Volume check failed.”

Once, you encounter the above error message, Disk Utility exits leaving the disk/drive remained inaccessible.

In order to solve the problem, you have to make a 'Erase and Install' operation of the Macintosh operating system. However, in this process all your data from the Mac hard drive will be erased and if you do not have a good known backup of your data, you have to run a Mac data recovery utility to recover back all your valuable photos.

The Digital Mac photo recovery software are designed with powerful scanning algorithms to dig into your troubled Mac hard drive and recover back your photos, videos and other files. Above all, with interactive graphical user interfaces, the software is absolutely easy to use.

What to do when Mac Error “Out of Range” Found

The start-up screen hangs infinitely with an error message- 'Out Of Range'  and finally goes black resulting in the inaccessibility of your data in the Mac hard drive. At the beginning, you may think that this is an issue with the display resolution, however, the problem can be due to a more serious cause such as the corruption of the file system. If after resolving the so called display related problems, the issue still persist, you need to take the help of any Mac recovery technique to recover back all your lost or inaccessible data.

Though initially anyone can think that the problem is related to the screen resolution, there can be some other serious problems as below:

• Corruption to the directory structure
• Corruption to the Master Boot Record or the boot sector
• Any corruption or malfunctioning of the Mac OS
• Virus or Malware infection

Whatever be the reason behind, at the end of any of the above problem, it is your valuable data that is in stake and you have to opt for a Mac data recovery software to bring the data back.

In order to start resolving the issue, you need to check whether there is any problem with the display and to resolve the same, just go through the below steps:

• Boot the computer in Safe Mode.
• Go to the system preferences from the Apple menu.
• Click on the 'Displays' in order to open the preferences pane.
• Select the 'Refresh rate' that is supported by your system.
• Restart the computer.

If after following the above steps, you are still getting the same issue, there is a possible file system corruption and you have to run the tool 'Disk Utility'. Disk Utility can help you check for the damage and repair it. If Disk Utility also fails to resolve the issue, you can have another try in order to repair the damaged file system with the 'fsck' command.

If all the above methods fail to resolve the problem, you are left with only one option, that is to run an innovative Mac File recovery software.

How to recover mac data when system Upgrade causes data loss

At many situations, when the product has been improved significantly with no of advanced features added, the up-gradation process cause problems, may even result in data loss or inaccessibility and up-gradation process in mac is no exception. In such a case, in order to recover back your seemingly lost data, you need to pick any Mac recovery software.

Mac OS X 10.5 comes with some really attractive features, such as 'Back to My Mac', which enables the MobileMe users to access their home computer, away from home through Internet. Furthermore, with 'Boot Camp', which is a software assistant, facilitates users to install other operating systems Like windows on a separate partition with Intel based mac system. Moreover, with a newly designed Dock, Stacks, an almost transparent menu bar, automated back-up utility- Time Machine, updated Finder etc, Leopard has given an ease of usage.

Still, following are few possible erroneous situations, which may annoy you while up-grading to Mac OS X 10.5 Leopard from a previous version of Mac OS X:

Usually, once you complete the installation of Mac OS X, you need to reboot your Mac system and the system fails to boot with an unusual Blue Screen Of Death. The system hangs infinitely until you make a power shut down, which may cause further damage to the system resulting in corruption or crash of the system.

As Apple has incorporated a new version of File vault with mac Leopard, users used to be at the receiving end of problems while up-grading from a previous version. Though Apple has recommended to turn off the File vault at the time of up-gradation, many times, it causes problems because the process is very slow and users hesitate to turn it off.

The up-gradation of Leopard is on such a large scale that it may sometimes cause conflicts with the existing applications and data inaccessibility.

In all the above situations, if you do not have proper backup of your data, you have no other option except running an Mac file recovery software to bring back your valuable data.

Mac hard drive is corrupted what to do now

Are you unable to start your Macintosh system, of late? Is this behavior is happening intermittently? Then, there is a very strong possibility that this is happening because of corruption in the Macintosh hard drive. The corruption can happen because of various reasons including power outages, critical file system files missing, abrupt system shutdown, etc. There are various methods that can be used to start the system. If none of these methods work, then you should use a third-party Mac data recovery software to perform data recovery in Mac systems.

Consider a situation in which you have a Macintosh-based system, which is not starting when you try to boot it. It is just displaying a blue screen without any error message.

Cause:

The root cause of this startup related problem is the hard drive corruption, which is disabling you from starting the system.

Resolution:

To tackle this situation, you should perform the following methods, preferably in the given order:

Booting from a different device: You should try to boot the Mac system using a removable boot device like USB drive, Mac OS X setup DVD, etc. To start Mac system using a setup DVD, the following steps are required:

Insert the DVD and hold the 'c' key after restarting the system.

You can, then, use the in-built First Aid utility to verify and repair hard drive.

Safe Mode: You can start the system in the Safe Mode by holding the 'Shift' key after restarting the system. It verifies the directory structure of the volume, and repairs it, if necessary. After logging in the system, you can use the First Aid utility to further repair the Mac hard drive.

Single User Mode (fsck): You can access the system by logging into command-line prompt using the following steps:

Restart the system and hold the 's' key.

Type the following command in the command-line prompt and press the Enter key to use the 'fsck' tool on the hard drive:

/sbin/fsck –fy

After a while, the file system is verified and repaired as the following message box is displayed.

** The volume xxxx appears to be OK.

If you receive the following message as well, then run the command again til you get the previous message.

***** FILE SYSTEM WAS MODIFIED *****

If the Mac system still remains inaccessible, then you should recover the data using a third-party Mac recovery software before reinstalling the operating system. Such Mac file recovery tools are non-destructive in nature that do not overwrite the existing file during the recovery.

Mac data recovery when FileVault Sparse image cause data loss

Apple Mac

Mac Machines are quite advanced in their architecture and are incorporated with various features for data safety. FileVault is such a type of application that facilitates the encryption of the data in your home directory/folder.

While the FileVault protection is 'ON', the home folder/directory transforms into an encrypted disk image. Then using the 'secure erase' option, you can erase the files that has already been copied into the FileVault. However, if there happens any problem, which effects or stops the process, then the data may get lost and can only be recovered back through any efficient Mac data recovery software.

What is Filevault ?: 

Filevault is a utility meant to protect files in a Mac machine. This utility comes included in all the Mac  OS, Mac OS X 10.3.9 and later. FileVault derives a key from the user login id, password and encrypts the home directory using the Advanced Encryption Standard  Or AES algorithm. The encrypted file system is mounted and unmounted when the user logs into or out of the system. FileVault saves the data as a single large file, that is a Sparse Disk Image and the data can be backed up by breaking the image into individual Sparse bands. However, there is a drawback lies with  FileVault, as it doesn't make the image of the whole drive and Mac Time Machine doesn't take back up of individual data.

Mac Data Recovery Software to recover lost mac data

Retrieving lost data can be an tiring process in Mac machines. A number of Mac users attempt to resolve the problem of data recovery using Certain XYZ data recovery software  .But Most of the time the recovery process fails The reason for this is as unclear as the effects of the data loss itself. Let us look at the various data losses that Mac user generally suffers and see how that helps us to pin point the right program.

Data Loss During Drive Initialization

When it comes to Mac data recovery, people who use Windows face far fewer challenges than people who Are using Mac machine. This is because in Mac  it involves more steps to format the hard drive the process are mentioned below

1) Disk formatting

2) Disk verification

3) Disk zeroing.

During these process, number of errors can occur resulting in data loss. Disk Initialization is the prominent data loss threat in Mac external drives destroying Mac user's important data. Partitions that holds the data becomes inaccessible and Apple's Disk Utility prompts you to format the mac disk. If you follow this and format your drive, you stand to lose your precious data.

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.

Mac Data Loss and Mac Recovery Solutions

If you buy a Macintosh computer, you know that its hard drive is not prone to crash or failure. The disk may get damaged at any point and you come across serious data loss situations. The hard disk corruption happens generally due to file system damage, system failure or virus infection. To solve this issue of data loss, you need to approach a reliable and effective Mac File Recovery Software.

It is Virtually impossible to say that the hard disk is quiet protected from failure or crash, but what you can do is that you can protect your valuable data by creating backup. A hard disk is the most important component of a Mac computer that is used to store application software and system Files. The hard disk errors are bound to occur at some point of time.

The system crash happens due to the following reasons

1) virus infection

2) file system corruption

3) operating system malfunction

4) hard drive formatting

During data loss situations only the file system reference of the file is deleted. The data remains physically present in the hard disk. OS can not locate the stored files as the file pointer from the file system table is deleted.

In these case if you have an updated backup in place, you can easily restore data from it. Backup is best solution to safeguard your data and prevent needs Mac data recovery Softwares. Mac System offers an in-built tool for quick and Easy backup Operation, known as Time Machine. In case if the backup is not updated or not available,or the back up is damaged, critical data Loss situations arise.

In all such cases, Mac File Recovery tool is required. The Mac Recovery Software have high efficient scanning algorithm to scan damaged hard disk and retrieve all the lost data from it.