Mac depends on the OS for hard drive size, not the System BIOS like a PC. You should be able to use a 20- and up with no problems. Brandy ----- Original Message ----- From: "Goodwin, Greg P." <GoodwinG at aafes.com> To: "A place to discuss Apple's sub-portable computers." Subject: [DuoList] DuoPod :) (Trying to see what the hard drive limit for a Duo is... if anyone knows, great. This is more of a "wow this is cool thanks for the help getting to this point" message). Doc Clu