Is it possible to boot the original Macintosh, or
perhaps the Mac 512K or
Mac Plus, from the external floppy drive?
Yes.
I seem to recall doing that on a regular basis with the 128k, and
although I don't recall having ever booted from an external floppy with
the Mac Plus, I have booted the Plus from the old Hard Disk 20 that used
the floppy interface. So I would imagine that an external floppy drive
would also be bootable on that machine.
In fact, I thought (but could be wrong) that you could boot all Macs that
had a floppy port via an external floppy disk.
-chris
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