I'm not sure why they'd have the disc labeled "AIO only", because really there's no way the OS can differentiate between the machines: the Personality Card is the same (Whisper or Wings) across all three models. So yeah, it'll likely install on any first-gen G3 desktop, but may have some AIO-specific software on it, or may be lacking software available for the other two models (the MPEG-decoding Personality Card wasn't an option on the AIO, for example, so it may not have the DVD player installer on the disc).

AFAIK, none of the pre-OS X install CDs will actually stop you from installing on a different machine, as long as the machine is compatible with that release.

Click to expand...

SSW used to be flexible like that (except when System Enablers were involved...), but somewhere between 8.0 and 8.5 they changed it: I tried an original SSW disc for a B&W G3 (8.5) and it wouldn't install on anything but a B&W G3. I've tried a few others (mostly iBook and iMac 8.6 and OS 9), and they also refused to boot anything other than the intended machine.

I did manage to extract the OS 9.2 image from the OS X installer discs for an iceBook (so, 10.2 or something), and it runs on any compatible machine I put it onto (although it has iBook-tailored software and settings on it).