Backup with dump and restore on Linux mini-HOWTO

"I summarize the procedure of the full restoration in case of trouble for your convenience.

Check whether hardware is the problem, and solve it if necessary.
Read the notebook of the dump log carefully, and figure out the restoration sequence. It is highly recommended to write down the sequence on paper and double-check it.
Confirm that the tape is write-protected before setting it to the drive.
Boot the system with the rescue floppy.
Format the target disk and create the filesystem to restore.
Mount the target filesystem on some directory.
Prepare the temporary space used by restore.
During the restoration of incremental archives in sequence, never erase the ./restoresymtable file until the restoration is over.
Reconfigure the boot method (lilo, etc.).
After the restoration is finished successfully and you confirm everything is OK:
-Erase ./restoresymtable
-Invoke the level 0 dump with a new tape (and preserve the old tapes for a while)."