How do I confirm extence/non-existence of hard drive on an old iMac? How do I open the case on an original (purple) iMac.  I want to verify whether or not there is a hard drive in the computer.  What safety precautions should I observe?  Apple profiler, run from the install disk does not find a hard drive, but I want to be sure. It's a PPC G3.
If this iMac of yours is, as i believe, a revision C iMac (revision A and B were all Bondy Blue), then there you can find a guide on iFixit.com about how to reach and replace its hard drive.