Time machine on macbook?

Question

My mac keeps asking me if i want to back up my files with time machine. I want to do this but i have only one hard drive and it is not coming up on the list. Do you need a second drive to use time machine?

Answer 1

Yes

Answer 2

you need an external harddrive if you want to use time machine and the external harddrive must have at least 100 gigs of space just go to future shop or bestbuy if you want to get an external harddrive

Answer 3

http://www.apple.com/support/leopard/tim...