Hi Wamuggers

I've offered to help a teacher by setting up 2 older PPC 580s to run some CDROM based ed software. The computers run quite nicely on OS 7.6.1 however the CDROMs require OS 8 or 9. The CDROMs won't boot on the machine, throwing up an error -192 and/or message similar to "Mac Start failed to load". I've found a great error code resource at http://www.rustle.com/mac/system8.html#aec.targ which says" -192 resNotFound Resource not found". (I gave my Sad Macs, Bombs and Other Disasters Book to my daughter, thinking I wouldn't be needing it now I've got OS X!)

Presumably, correct me if I'm wrong, Mac Start is looking for some form of system software from OS 8 that is not in OS 7. I've got an OS 8.1 disk which I could load onto the 580s but there is not enough hard drive space on them to do so. I'm loath to delete the ed software on them to make room for unnecessary system stuff and certainly don't want to upgrade any hardware. Is there a workaround? Is it possible to install the components of OS 8 needed to run the CDROMs without totally updating to 8.1? If so, what would I need to install? It would be nice for the kids to have these extra learning resources in their classroom at NO cost.

I've looked at the picle's website http://macfaq.org/ which I've used before to do a similar trick with OS 7.1 - 7.5 on LC475s but can't find anything to help. Lowendmac http://www.lowendmac.com/ also doesn't seem to have any info.

Old Macs never die. They just get braver.
Any help would be gratefully appreciated.

Regards
Reg