Paul, thanks for the jumper info. I decided to gut one of my A2000s since I have 3.... for some reason I thought the cables wouldn't be compatible but now I think that I was getting confused about DD over HD or something like that. Anyway it still won't boot, but it has begun asking me for workbench, so I probably need to take a harder look at the jumpers on the 2 hard drives, extras which may or may not be fried. Too many details to recall which parts were fried, which simply got moved out. I gotta start marking these things. If I jumper the external floppy drive to be df0: that would be good, because I need to get a clean boot in order to check the HDs, since they don't want to boot on their own... see? Kinda wish I hadn't done such a good job of dismantling the dang thing. Once I know everything works I can start deciding if the A4K goes into the antique radio case, or the A2K. Since I want to use an LCD monitor I'm gonna need a scandoubler, too, unless the Spectrum EGS card does for me... details, details...