Posts Tagged Data Recovery

NaggieCHKDSK/F Fails to Fix File System Problems

Monday, May 31st, 2010

One of the most common reasons for unbootability of the computer system is the file system corruption in Windows XP. And for damage in file system, the reasons responsible for that are unexpected system shutdown (due to power outage or human mistakes), virus infection, MFT (Master File Table) damage, and more.

In order to get past the corruption issues in a Windows XP system is by executing CHKDSK/F command. This command checks the physical and logical integrity of the file system and repairs it in case of any damage.

Though the command, in most of the situations, is a life-saver, but do not guarantee 100% success in every life system corruption issue. In such cases, when the CHKDSK command fails to repair, an ideal alternative is to reinstall Windows XP and restore data from an updated backup. However, in case no backup is available, the user can easily recover data using a commercial Windows Recovery application.

Let’s consider a practical scenario that explains the above situation. You encounter the below error message at the startup of Windows XP operating system:

“C:\$MFT is corrupt and unreadable. Please run the chkdsk utility.”

After the above boot error message pops up, your system becomes unbootable and its data gets inaccessible. As suggested in the error message, when you run CHKDSK utility, you encounter another error message:

In the master file table (MFT) bitmap, CHKDSK discovered free space marked as allocated. CHKDSK discovered free space marked as allocated in the volume bitmap. Windows found problems with the file system. Run CHKDSK with the /F (fix) option to correct these.

As error message suggest, when you execute CHKDSK utility with ‘/F’ parameter, it shows the same error message. Since the system could not be started, the data saved in the Windows based hard drive remains inaccessible.

Resolution: In order to overcome the CHKDSK/F failure error message, follow the step mention below:

1. Reinstall Windows XP on your system.
2. Restore the data from an updated backup. In case no backup is available, use a commercial Windows Data Recovery utility.

Such windows data recovery tools use effective recovery techniques to perform complete recovery of all formatted files and folders.

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NaggieRecovering Linux System after Using Fsck on a Mounted System

Tuesday, May 18th, 2010

Is there any difficulty that you found while mounting your Linux system disk? The problem could be due to corruption in the file system. In order to address such issues, Linux OS provides fsck utility. It is a command-line utility, which checks integrity and consistency of the Linux file system. In addition it finds errors and fixes them, if possible. However, if you run this utility on a mounted file system, then you may not be able to access the data at all. In such cases, you should use third-party Linux data recovery software to perform data recovery Linux system.

Consider, you have accidentally run fsck on a mounted Linux OS. The inode root gets damaged and all inodes start calling similar blocks. When you try to mount the volume after fsck, the following error message is discovered:

“Mount: wrong fs type, bad option, bad superblock on /dev/hda1, missing codepage or helper program, or other error. In some cases useful info is found in syslog – try dmesg | tail or so”

When you run \dmesg\, as suggested in the error message, another error message may be displayed, that is:

“ext3-fs: corrupt root inode, run e2fsck”

And when you run e2fsck, yet another error message is displayed, that is:

“Root inode is not a directory. Clear?”

Once you press ‘Y’ and proceed with the process, the parent entry of each inode from the root directory will be deleted. The root inode will attempt to recover but if it fails, another error message will be displayed, that is:

“Cannot Allocate Root Inode”

After this error message, you will not be able to access your system.

Reason: This behavior is caused due to corruption of the file system, superblock, root inode, or any other Linux data structure. Because of this, the OS cannot locate the hard disk volumes.

Solution:

In order to sort out this problem and perform Linux data recovery, you should reformat the hard disk and reinstall the Linux operating system. However, that would invariably mean that your valuable data will be lost.

In such cases, you should use a third-party Linux recovery to recover lost data. Such tools are able to Recover Linux data safely by using fast yet sophisticated scanning algorithms.

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SuzanneData Loss in Windows 7 System Post BIOS Upgradation

Thursday, February 25th, 2010

A system BIOS (Basic Input/Output System) is a first program that is executed when you turn on your system. It ensures that the chips, ports, hard disks, video display card, and CPU (Central Processing Unit) are working together.

Upgradation in BIOS is performed by a firmware upgrade, which is called as ‘flashing‘. While BIOS upgradation is an easy process, the data saved in the hard drive might become inaccessible after the completion of the process. This happens primarily due to a bootable error message that appears at the time of booting the system. In such cases, if you need to access the hard drive data, then you can restore in from an updated backup. However, if no backup is backup is available, or the backup file is damaged, then you will need to use advanced third-party Data Recovery Software to recover the data.

To illustrate the above scenario, consider a practical case where you have a Windows 7 based computer system. You upgrade your BIOS on your system. However, when you try to boot your system after upgradataion, you receive a BSOD (Blue Screen Of Death).

After the above error message appears, your system becomes unbootable and the data saved in the hard drive becomes inaccessible. Additionally, the same error message pops up every time you attempt to boot your system.

Cause:

The primary reason liable for the occurrence of a BSOD error message in such cases is that the Windows 7 operating system sees your system as a different machine.

Resolution:

To resolve the BSOD error message and access the hard drive data, you will need to format the hard drive and reinstall Windows 7 operating system. While formatting the hard drive proves to be an adequate solution to overcome the error message, it also results in erasing the data saved in the hard drive. In such cases, the data erased after the formatting can be recovered by using advanced third-party Data Recovery Software.

A data recovery tools ensures complete recovery of all the files, irrespective of their reason of inaccessibility.

Windows Data Recovery is a user-friendly data recovery software that recovers data from formatted FAT12, FAT16, FAT32, VFAT, NTFS, and NTFS5 file system volumes. The original data in hard drive, however, remains untouched and unmodified. Compatible with Windows 7, Vista, XP, 2003, and 2000, the read only tool allows you to store the recovered data at your desired location.

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