Unix System Administrator

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If you receive one of the following errors from the problem may be a corrupted superblock: fsck or mount commands, the fsck: Not an AIX3 file system fsck: Not an AIXV3 file system fsck: Not an AIX4 file system fsck: Not an AIXV4 file system fsck: Not a recognized file system type mount: invalid argument The problem can be resolved by restoring the backup of the superblock over the primary superblock using one of the following commands: dd count=1 bs=4k skip=31 seek=1 if=/dev/lv00 of=/dev/lv00 Once the restoration process is completed, check the integrity of the file system