Dan Martin wrote:
Good suggestion. One hard drive cable (an Apple drive) appears to have a 19-pin connector,
Wow! Must be an HD20. That's amazing. Wikipedia tells me that there were adaptors that converted these to scsi devices back in the day... http://en.wikipedia.org/wiki/Hard_Disk_20 Probably hard to find such a thing these days. I worked at Apple in Cork, Ireland as an intern in 1988, and I have never seen one of these :-) I think the hammer and a magnet may be your best course of action here.
the same as Apple's floppy drive connector.
The second party hard drive has a 25-pin connector (same physical connector for RS-232, but different voltages etc.)
This one is scsi, using Apple's DB25 connector. Apple stopped shipping macs with scsi relatively recently, chances are pretty good that you can find a usb -> scsi adaptor on ebay.
I don't know what format,
Looks like HFS was introduced before the Mac Plus, so chances are good that if you can connect the device to a linux or mac os x system, it can be read, and of course, reformatted (don't forget to overwrite everything as well).
Peter