File system check for bad sectors on a drive in Linux
Sometimes our disk has bad sectors or may have errors like an input-output related error or be in a read-only file system. At that time we can use e2fsck which is a file system check utility to check for bad sectors on the disk or to resolve other errors on the disk.
However, mostly we use a e2fsck utility when a drive is in a Read-Only file system or when we want to scan our hard disk for bad sectors.
To run e2fsck in a correct way is necessary, which should be like below:-
Step 1: It is always recommended to scan a file system in single-user mode. So first go to single-user mode.
Step 2: Unmount the partition on which you would like to run it.
[[email protected] ~]# umount /dev/sda1
Step 3: After this run the e2fsck utility on the system as below:-
[[email protected] ~]# e2fsck -y -v -f /dev/sda2
-y = To auto access yes for all questions.
-v = Verbose mode output
-f = Forcefully
Once the file system check is completed, again mount the drive and then shutdown and start the Linux machine. That's all.
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