Thursday, 15 September 2011

Superblock Corruption in Sun Solaris

A superblock in Ufs (Unix File System) volume is the most considerable part that contains vital facts about the file system's geometry and behavior tuning parameters. Corruption of superblock primarily occurs due to overlapping disk partitions, operating system malfunctioning, unexpected system shutdown, virus infections and more. Once the superblock gets corrupted, the file system can not be mounted. This results in inaccessibility of data stored in the hard drive. To overcome such data loss situations, you need to restore the data from an updated backup. However, if no backup is ready or backup fails to restore the required information, Sun Solaris Intel recovery Software comes to rescue.

As a practical scenario, when you attempt to boot Sun Solaris Intel operating system, you encounter the below error message:

Solaris 10

"Bad Super Block: variable"

The above error message indicates that the system is unable to read the superblock. After the above error message appears, the data saved in the hard drive becomes inaccessible. In addition, you encounter the same error message each time you attempt to start your system.

Cause:

The root cause for the occurrence of the above error message is the corruption of superblock.

Resolution:

To decide the above error message and way the data, you will need to ensue these steps:

Run the format command, pick the disk involved, and print out the partition information.
format : N > partition > print

Run newfs command with the -N selection to print out the file system parameters, along with the location of backup super-blocks.
newfs -N /dev/dsk/device

Select a super-block from a non-overlapping area of the disk and run
fsck command with the new devotee super-block number.
fsck -o b=Nnnn /dev/dsk/device

However, if both the procedure falls short to decide the issue and you still encounter the same error message, then you will need to use qualified Sun Solaris Intel Data recovery Software to recover the lost data. Such Sun Solaris Intel recovery tools use developed scanning mechanisms to recover your lost files and folders. With highly interactive user interface and developed features, these tools are easy to understand without any prior technical knowledge. Such recovery applications recover the lost data after fsck is unable to mend the system data structures.

Stellar Phoenix (Solaris - Intel) software is a qualified Sun Solaris Intel Data recovery tool that recovers data from Solaris operating system on Intel platform. This non destructive recovery application is compatible with Ufs file systems. It gets installed on Windows (Xp, 2003, 2000, Nt, Me, 98 and 95) and the affected Unix hard drive should be related as slave.

Superblock Corruption in Sun Solaris

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