fsck - check and repair a Linux filesystem it is used to check and
optionally repair one or more Linux filesystems
fsck [OPTIONS] [FILESYSTEM]
Unmount the device first
$ sudo umount /dev/sdb1
$ sudo fsck -p /dev/sdb1
when file system is repaired, mount the partition
$ sudo mount /dev/sdb1
To do a dry run with fsck
$ sudo fsck -N /dev/sdb1
To fix detected errors automatically with fsck
$ sudo fsck -y /dev/sdb1
To skip repair but print fsck errors in the output
$ sudo fsck -n /dev/sdb1
To force fsck to do a filesystem check
$ sudo fsck -f /dev/sdb1
To run fsck on all filesystems at once
$ fsck -AR
regards,
T.Dhanasekar