Q: I have an old PC with an 80gig hard drive and a new PC with a full 160gig hard drive. I want to take my old drive and use it as a slave hard drive in my new PC, but I want to keep all the information on both drives. So my question is will I lose any information on either drive when I do this?
A: Definitely no, I suggest you delete the windows folder on your old 80Gb HDD just to avoid possible conflict between both hard drives. Nothing to worry about your data.