I took the same advice as someone already mentioned. I run two hard drives. One for windows and one for all my files. And everytime I reinstall windows, I make sure to unplug my files hard drive first
Running two drives does nothing to prevent your data drive from eventual failure.
If your data drive failed right now... you would be just as pooched as him. And
yes, Hard Drives DO fail. Its not a question of 'IF' its a question of "When".
Losing a windows drive might not be so bad, IF you keep all of your Docs on the
data drive.
Personally, I run over 4 drives:
1) OS drive
2) Backup OS drive
3) Data Drive 1
4) Backup Data Drive 1
and so forth for the other data drives.
And even that isnt completely failsafe. The probability is fairly low... but a backup
disc could fail the day you change it to be the live replacement.