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| Click here to select a new forum. | | Installing Mac OS 8 on a Performa 6400/180 - Only 8MB RAM Detected? | Posted by: TheMightyMadman on 2023-04-28 14:24:17
Hi all,
I've got my Macintosh Performa 6400/180 up-and-running after quite a bit of work (power supply rebuild, replacing dead IDE HDD with a CF card and adapter, replacing the non-working CD-ROM drive), and I want to install Mac OS 8 from CD. I have an original UK install disc, and although I can boot the machine from it, unfortunately it won't let me install the OS as "there isn't enough RAM available" - only 8MB RAM is shown under system information, which I am guessing is the RAM soldered on the mainboard. Both DRAM module sockets are populated, so surely there should be plenty more RAM available than that. Is this an installer software limit, or could there be a hardware issue? Or, am I overlooking something simple?
I greatly appreciate any assistance!
Many thanks,
Adam | Posted by: treellama on 2023-04-28 14:29:41
That would be a hardware issue 🙁
Remove the modules, clean them, reseat them. | Posted by: Phipli on 2023-04-28 14:48:08
Remove the modules, clean them, reseat them. Check that they're the correct type before refitting them. | Posted by: TheMightyMadman on 2023-04-30 08:49:36
Thanks for the advice, all 🙂 It looked like the two modules had managed to work themselves out of their sockets on one side. With them cleaned and refitted, the Performa is showing 104MB RAM, and Mas OC 8 has been successfully installed. | Posted by: Snial on 2023-05-03 14:46:21
... I want to install Mac OS 8 from CD. I have an original UK install disk... I understand you're running Mac OS 8 (not 8.1) from the CD? I too have that CD - there's a lot of enjoyment in re-installing the OS authentically! Mac OS 8 has a free upgrade to Mac OS 8.1 and I wanted to install that version because it supports HFS+ which means massive drive partitions with small cluster sizes.
I was wondering if you wanted to do the same, since you have a CF card, if in fact you have Mac OS 8.0 rather than 8.1. After a bit of sleuthing I found the actual British 8.1 update, which you can read about it in this post:
Nov 28, 2022
Mac OS 8 (and 8.1) itself will need to be in a HFS partition, but you can format the other partitions for HFS+.
-cheers from Julz | | 1 |
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