I have an iMac G4/800 17in (this one : http://www.everymac.com/systems/apple/imac/specs/imac_800_17_fp.html) to sell for a friend. It's running OSX 10.3.9. With my new Macs I would do internet recovery or reinstall by using and then disconnecting an external drive. This iMac has no internet recovery (I'm pretty sure) and also has no install discs with it. What can I do to remove the old stuff other than deleting it a bit at a time ?