Last week I managed to get a copy of AppleShare Server 3.0. This version has the ability to remote boot an Apple IIgs or IIe with a Workstation Card. I installed it onto my Macintosh Classic with 4mb of RAM running System 7.0.1.
The install process was not entirely smooth. The server software installed without a hitch. The included "Apple II Setup" v2.2 disk did not want to play nice. Luckily Apple has version 3.0 on their Older Software Downloads page. It is included on the seventh disk of GS/OS 6.0.1.
The IIgs install was a little bit trickier. I did not have authentic 800k SSDD 3.5" disks. Using the ol' "tape over the upper left corner hole" trick I converted 1.4mb DSDD disks. During the install process on the IIgs I kept getting "I/O Error" messages. Persistence paid off though. I reformatted the disk images and eventually got them to work completely.
I now have a IIgs connected to a Macintosh Classic with a serial cable that boots over AppleShare. What advantages does this have? Well I don't have to spend over $100 on a SCSI or CF card to access the library of IIgs software. It also reduces the amount of wear and tear on the physical boot disks.
The whole process has been documented on my flickr account
All the technical information on how to do this can be found at VintageMacWorld