Currently Being ModeratedJan 16, 2014 7:23 AM (in response to Axeman1020)
I gather from other postings on Apple.com that I probably should have completely wiped the hard drive of my used IMac before installing my own files. I may still have to do that. I tried shutting down Time Machine, which I am using with an external drive. The previous owner apparently did not have an external drive.
Currently Being ModeratedJan 17, 2014 9:04 AM (in response to BPS)
Erasing is rarely necessary.
But make sure your backup is not the only one that you have before installing anything is necessary.
Note, if you have a G5 or G4 Mac you can't upgrade to Snow Leopard.
If your intent is to upgrade to 10.7 or later, see this tip: