Jerry and Allen, Thank you! Now, let's see if I fully understood. If so, my plan will make sense.
The current plan: 1) Obtain and install another memory stick (bringing the total to 512meg) and another scsi HD which I'll set as ID number 1 on bus 0. The added HD can go into the floppy drive bay, which just collects cat hair. As I understand it, the computer itself has to occupy ID number 0 on the scsi chain - at least I think that was the system on earlier machines. 2) Then, I'll install Jag on the new scsi drive and let it use the latest version 9.x on the same drive. 3) Then operationally, using whatever the equivalent to the Startup control panel is on OSX, I'll be able to designate one of the other drives as the startup when it's necessary to use an earlier system. Does that sound like a functional plan? Follow-up questions: (All good answers lead to new questions.) 1) Is there any advantage to the "other" UNIX disk format? 2) My internal CD is an ATA mounted on ATA 1 at ID = 0. If I replaced that device with an ATA hard drive, would the computer recognize it? Perhaps, if that could work, it would be a better approach than adding another scsi drive as the home to OSX. Of course, then I'd have no way to startup via the CD - as my external CDRW is a scsi and won't serve that purpose - but if starting up from the CD isn't necessary for installation, I can live with that. 3) Allan. Re your upgrade report, yes, I have it, thank you. Did you try OSX before upgrading the processor to 500? Did tweak the system bus to get a better matchup or is it still running at 66? If you didn't tweak, I wonder how much improvement you're actually seeing due to installation of the 500. Thanks again guys. Bill Holt | The next meeting of the Louisville Computer Society will | be January 28. The LCS Web page is <http://www.kymac.org>.
