I will tinker with it some more once once I have read up a bit on Macsbug, once I find the time. Have to go away this weekend, work is busy, etc. etc.

On the archiving question, however, the slight problem there is that there are multiple personal files left from the previous owner, all the way from the 90s. I haven't touched them, as I don't poke around in other peoples' business when I get an old machine (first thing I do is simply look for interesting Extensions, etc., see if it is working, and then I zero out/ wipe the system), but if I were to archive, I am uncertain how to proceed. If I were simply to trash the personal files, empty the trash, and then archive to an .img, could the personal files in theory be recovered from the .img archive by a disk utility?

It is a bit supercillious, I suppose, but I personally take the files of a private user to be entirely off limits.