Check Disks

Run:-

# mke2fs -n /dev/sdb

to find the disks Superblocks backups.

# mke2fs -n /dev/sdb
mke2fs 1.45.6 (20-Mar-2020)
Creating filesystem with 12976128 4k blocks and 3244032 inodes
Filesystem UUID: 2500590e-c494-4e0b-ab27-2e000a1fb6d9
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424

# fsck -b 32768 /dev/sdb