Nope, I tried a large ATA-6 hard drive in my 2400 and it absolutely refused to see it. I ended up getting a 6 gig Travelstar and it works just fine. As far as an installation guide goes, don't have that either but you do have to take a lot of the machine apart to get at the drive. A good thing to do when you first take a PowerBook apart is to take a piece of paper and assume its perimeter is the perimeter of the base of the PowerBook. Then as you remove screws, mark their locations on the paper. Or if you know the names of components, you can just make a list of the lengths of screws and through what components / general locations they attach. The big thing is making sure you get all of the long screws through the boards in to the chassis. Some long screws will fit where short ones are supposed to go, but most/no short screws will fit where long screws are supposed to go. Just go really slowly and watch that you don't yank the ribbon cables, you should be fine. Josh On Apr 9, 2007, at 4:37 PM, Rob Johnstone wrote: > Hi All, > > I haven't worked out how to search old postings to the list - is it > possible? > > What I'm interested in is a new hard drive for my PowerBook - it > hasn't arrived yet but I'm in planning mode. Anyway, when I checked > hard drives on OWC, they come up with ATA/6 options - but LowEndMac > warns that the drive controller in pre-G4 PowerBooks is > incompatible with ATA-6 hard drives. Is ATA/6 OK? > > Anyone have installation guides? > > Cheers, > Rob