They are 2.5" ATA drives. You can find them on eBay or places like www.macsales.com. Which brings up another interesting question: Back in the pre-OS X days, you could only format a hard drive with Apple's Drive Setup if the drive had Apple ROMs. You had to use a third-party application to format one not made by Apple. Is the same true under OS X with Disk Utility, or will it format any standard ATA drive? --Joe! On Jun 27, 2004, at 9:09 PM, max miles wrote: > Greetings, > > I'm wondering about getting a larger HD for my iBook (dual USB). Can > anyone tell me exactly what size the hard drives are? Who sells them? > I know they are ATA 100's, but that's pretty much it. > ____________________________________ World of joereform! at http://homepage.mac.com/joereform