My first Mac

[Scott Quinn]

>> Does it pop up saying the disk needs to be initialized? Are you sure 
>> it's
>> HFS?

I'd first give Disk First Aid or some similar program a go at it. Start 
up DFA first and then insert the disk and scan it. Try covering the HD 
hole, also- 800k Macs could format 1.44s at 800k which could confuse a 
newer machine. You might be sunk, though, if that's the case, as some 
800k drives don't magnetize the disk strongly enough and it is 
unreadable after several years.