from the wonderful said:
If the computer crashed, how to restoer it from the backup file?
Also how long it take to backup the whole system(Usually)?
if you have XP pro, you can use ASR (start, help, ASR) to get your
system back to where you can use NTBackup's 'restore' to get the rest
back. If you don't have XP pro, you have to get to where you can run
'restore' some other way.
As for 'how long', it's 'how long it a piece of string'. Depends on how
big/fast your hard drive is (i.e. how much are you backing up) and what
you back it up to - tape drives vary in speed enormously (but even the
fast ones are slower than disk).
NTBackup (with verify) takes me a couple of hours to a Travan Tr-4 tape
drive, backing up about 3GBytes.