You CAN copy Mac disks on a IIgs

[willi@wilserv.com (Willi Kusche)]

Hi!

    To make a long story short, you can copy Mac disks with a IIgs and
a couple of 3.5 inch Apple drives.  HFS disks can be copied with any
volume copy utility.  MFS disks (400K) can be copied by simply copying
the first 800 blocks.  I verified copies of both kinds by booting from
a 3.5 inch Apple disk connected to the back of a Mac SE.  I had to use
the external drive because the internal drive doesn't work.

    The copies I made on the IIgs will not work in an old Mac single
sided drive.  That's because an Apple 3.5 inch drive apparently can't
be forced into formatting just one side of a disk.  I verified this by
formatting a disk with MS/DOS then formatting that disk with an old
version of the Mac O/S that allows you to specify a one-sided format. 
After the Mac format, tracks 40 and higher could still be read by a
sector editor on an MS/DOS system.

Willi