Archiving Apple ][ sierra games

["Steve Savage" <realitystorm@sympatico.ca>]

I can't figure out how I can make disk images of my old Sierra games (copy
protected disks).

I have an apple ][c that I picked up a few years ago that has the original
disks for several sierra adventure games with it (KQ 1-4, SQ1,2)

I'm a big classic sierra fan, and would like to make disk images of these
games to archive, and play under emulation.

But, I can't figure out how I can make disk images of copy protected disks,
I tried FDI2Disk, didn't work, I searched the net, and found info how to
copy non-protected disks, and disk images of some sierra games on asimov,
but many of them seem to be corrupt (SQ1,2,KQ4 didn't work under emulation)
so I don't even know if some of these games can be imaged.

Has anyone successfully imaged space quest 1,2 and/or King's Quest IV for
the apple ][?  If so, how?