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# man fsck OPTIONS -a Automatically repair the filesystem without any questions (use this option with caution). -n For some filesystem-specific checkers, the -n option will cause the fs-specific fsck to avoid attempting to repair any problems, but simply report such problems to stdout. -y For some filesystem-specific checkers, the -y option will cause the fs-specific fsck to always attempt to fix any detected filesystem corruption automatically.
-f -f option to fsck (Force checking even if the file system seems clean.)
# cat /proc/partitions # fsck -nf /dev/sda3 <- check # fsck -f /dev/sda3 <- fix
The -F flag means 'force fsck'.
# shutdown -rF now
# vgchange -ay VolGroup00 # fsck -f /dev/VolGroup00/LogVol00
1. At the GRUB splash screen at boot time, press any key to enter the GRUB interactive menu. 2. Select Red Hat Enterprise Linux with the version of the kernel that you wish to boot and type a to append the line. 3. Go to the end of the line and type single as a separate word (press the Spacebar and then type single). Press Enter to exit edit mode.
# init 1
# umount / or # mount -o remount,ro / or # mount -o remount -rn /
# fsck /dev/mapper/VolGroup-lv_root