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Filesystem check

At boot-time the storage on the NetManager is checked. If the machine was shutdown properly, then the filesystems will be recognised as clean and so will not be checked. If, however, the computer was just switched off, all local storage will be checked in detail (a 5-stage process). If you have large amounts of storage, this may take a considerable time during which the computer will appear to be doing nothing (though its hard drive light will be on pretty much solidly). If you type Ctrl-T you will get a status report and percentage complete if you want to reassure yourself that it has not locked up!

Occasionally, the filesystem check will reveal problems that the automated mechanism will not fix. If this happens, you will see a message Automatic file system check failed and will enter Single-User Mode.

At the single-user command prompt, type:

fsck -y

This will rescan all filesystem and attempt fix any problems. When the process is complete, type reboot to re-attempt a normal boot.