"You only lose what you don't back up."
If you can't risk losing something, make sure it is backed up. If it is really really important, make two backups.
I just got my upgrade disc for Win 7, they recommend doing a back up before I install. Should I do the back up and do I need to back up my whole system or just the important b. What are the chances that my files will get wiped out
Thanks

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