General Category > Lisa Troubleshooting and Repair
System Error 10738
AlexTheCat123:
--- Quote from: sigma7 on July 20, 2025, 02:12:45 pm ---I suppose it is possible that the recompiled boot/environments code in this particular image is missing some kind of patch, or it may be that this problem is specific to my machine, or perhaps it has been there all along but the 'random' powerup values in the SRAM chips that were used were consistently outside the problem values.
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Just to be clear, there isn't any recompiled code in this image since I'm trying to be very careful not to violate any of Apple's licensing terms. All the LOS/Workshop files in the image came straight from the original install disks. So assuming there's no corruption, any problems that appear are problems that would show up in any standard install of LOS.
--- Quote from: TorZidan on July 20, 2025, 03:45:02 pm ---After some trail and error , I found out that if I switch the I/O Rom version to "88" (in File->Preferences) , it boots fine to the "Environments" screen, and from there it boots successfully to LOS and Workshop (based on your choice); any other i/o rom version boots into "System Error 10738" .
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Ahh, I think that could explain it! I created this image on a 2/10 (so I/O ROM 88), and I guess there's some incompatibility with booting the image on a 2/5.
--- Quote from: sigma7 on July 20, 2025, 05:23:33 pm ---IIRC, in both cases, using either Apple-1 or Apple-3 will boot the hard drive from the built-in port (while Apple-2 is for the floppy). I don't recall which is used as the default for "auto start" if one doesn't interrupt the process to stop at the Startup From menu.
The boot ROM saves which one was selected in case the booting environment wants it, so this may be relevant to when the error appears.
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I don't have my Lisa out right now to confirm this, but I'm guessing that the ROM is saving the boot ID as 3 on your 2/5 systems, whereas LOS is expecting it to be saved as ID 1 since it was installed on a 2/10, and then it gets confused when the numbers don't line up. Just a guess though!
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