If I am remembering correctly, older systems can't
format during a
copy, but later ones can. What I seem to think was the single-disk
copying procedure is to eject the System disk (Flower-E or Flower-1?),
you want <COMMAND>-E for copying. the "1" thing (<COMMAND>
<SHIFT> 1 if
I remember right) was the "force eject" for the first floppy drive at
startup if normal methods (drag-to-trash or eject command) failed.
It's all quite tedious, but possible. If
there's anyway you can
borrow a second 400K floppy, you will find this somewhat trivial. You
can also copy 400K disks in more modern Macs, so don't think you are
limited to using a 128K Mac to copy single-sided MFS disks. I can't
say for certain how new the gear can be, but at the very least, I'd be
surprised if a Mac SE or SE/30 running System 6 couldn't still do it.
You want to use either a Mac II or earlier, or a SE/30 or IIcx/IIci
with an external 400 or 800k floppy. The SuperDrive (original
SuperDrive, not the "new" CD/DVD one) [present on all Macs since the
IIx, many IIs and some SEs (SE FDHD)] has the smaller head size and
your older machine won't read it properly. WRT the swapping- can't
recall at this point if changing the disk cache/RAM cache (depending on
your system version) setting makes any difference, but the default
gives you lots of wrist exercise even on a 4MB Mac SE/800k.