I've received the 40GB IBM TravelStar drive from Smalldog, and installed it in my PowerBook (Pismo) without incident. Installing OS X took a surprisingly small amount of time, and the machine booted to the desktop before I'd realized what had happened. I've got a lot of configuration to do to get this system back to where it was prior to the loss of my 10GB drive, but I kind of look forward to starting from scratch.Yellow Dog Linux
I set aside a 10GB partition on this new drive to install another OS. I have the YDL 2.0 discs (I ordered them to upgrade my then-primary server that ran YDL 1.2, but YDL provided no upgrade path, so the discs and lovely packaging sat idle), so I thought I'd install that. Big mistake. The installer looks like ass, and failed with some exciting new Python error each time. It was difficult to use, had a logic all its own, and never did manage to install. I'll probably try Mandrake or SuSE or something, but not Yellow Dog Linux. I've decided to give up on it.