Thanks for the helpful info, wally, Cloud and Apostrophe! The potentially stuck hard drive is not a new thing to me. I once had a PowerBook 100 with the same problem. Today I made some progress with the SE. I received some old diagnostic discs from a fellow forum member, and I managed to boot the SE from a MacTest Pro July 1995 disc. SCSIProbe shows the MiniScribe drive. I tried the floppy drive again, and it does actually work, so I suppose I just made some bad floppies (they do read though, they just don't boot). However, the auto inject doesn't seem to be working properly. I have to push the disk *all* the way in, to the point where i have to put my fingernail (hard for me, I cut them short ) through the space in the bezel to get it to go in. Checked the RAM, and it is 4MB.

More pictures here:

http://www.flickr.com/photos/wackymacs/tags/macintoshse/