hi David You can put pretty much anything in there--I had a 40gig in mine which worked great. Toshiba makes good drives these days. As for installation, it's a complete takeapart, and not for the faint of heart. An Apple place should be able to do it for you, or there are numerous manuals and videos available on the net. cheers! Greg On 11/17/05 11:23 am, "David Grant" <dgrant at iastate.edu> wrote: > The HD in my 2400 has finally croaked. I remember conversations on > the list (but when?) about which ones do and don't work in the 2400 > but of course I didn't save them. Can anyone give me any hints on 1) > which disk to get and 2) a place to get it installed? > > Thanks, > David