Mac OS 7.5.3 won't boot after opening the Memory Control Panel

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MetalSnake
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Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by MetalSnake »

I have a booting Mac OS 7.5.3 in Basilisk II (august 2021) on an M1 MacBook Air.
When I open the Memory Control Panel and close it without changing any settings and then restart the guest Mac OS I get the error "Not enough memory is available while using

To temporarily turn off extensions, restart and hold down the shift key."

It will boot with holding shift key.
But to get a normal booting OS I have to use a backup image.

Is this a known error, or reproducable on your end?
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Ronald P. Regensburg
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by Ronald P. Regensburg »

Restarting the emulated machine often does not do what you would expect. Instead, stop BasiliskII and start it again.
MetalSnake
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by MetalSnake »

The effect is the same.
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Ronald P. Regensburg
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by Ronald P. Regensburg »

I do not see the issue.

M1 iMac
macOS Big Sur (11.6.2)
1 August 2021 universal BasiliskII build
System 7.5.5

Did you make any changes in Memory control panel earlier?
How much RAM did you assign to BasiliskII?
MetalSnake
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by MetalSnake »

I have MacOS 7.5.3 Revision 2 running as guest and macOS 12.1 as host.
In BasiliskII GUI I have set 128MB, Quadra 900, 68040 CPU

I'm not sure if I did changes in the Memory panel before as I'm using a older image, but I don't think so as all other settings were default ones.
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Ronald P. Regensburg
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by Ronald P. Regensburg »

Try this:
- Open the Memory control panel, click "Use Defaults", close Memory control panel, shut down BasiliskII.
- Open your Home folder
- press command-shift-. (command-shift-dot). This will show hidden files.
- Find the file .basilisk_ii_xpram and trash that file.
- Again pressing command-shift-. will again hide the normally hidden files

Can BasiliskII now start up normally?
MetalSnake
Granny Smith
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by MetalSnake »

No, still the same.

But when I click "Use Defaults" and then turn off Virtual Memory, then the guest system will boot normally.

If I turn on Virtual Memory, try to reboot (shut down and start Basilisk again), I get that error, reboot again but now holding shift then open Memory control panel and turn off Virtual Memory and reboot it works as expected.

So it seems like opening the Memory Control panel without changing settings turned on Virtual Memory which causes some error.
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Ronald P. Regensburg
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Re: Mac OS 7.5.3 won't boot after opening the Memory Control Panel

Post by Ronald P. Regensburg »

Ah, yes. Virtual memory is not supported in BasiliskII.
"Use Defaults" does not change the virtual memory setting.
In a fresh installation virtual memory may appear enabled in the control panel, although it is not.
There is no problem as long as the virtual memory setting is never touched. Best keep virtual memory disabled now.
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