Is Puppy suitable for this scenario?
I have a handicapped relative whose computer I have been taking care of for years. He uses it for simple games, it was a 386 I think running Windows 3.1 which could deal with the hard shutdowns he does (he is brain damaged and has been unable to learn how to properly shut down, sorry).
The computer has finally gone belly up and I don't have hardware old enough for the Windows 3.1 to deal with so I was thinking maybe a linux live cd would do? I have couple of 486s, I can throw 128MB of RAM into one of them and a 2GB harddive (they don't make them like that anymore, they still work!)
I don't know of a filesystem that can handle powering off at the switch but a live cd, Puppy maybe?