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LC 475 installation woes


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For some reason my overclocked 475 with a full 040 is being rejected by all the installation media I've tried. 

 

I have an OS 7.6 CD and that gets rejected with "This program does not run on this computer model". 

 

I tried the system 7.5 installation floppy image that came with the Floppy Emu and I get "The system software 7.5 installer does not recognize this Macintosh.  Please use the original disks that came with your computer."

 

I finally got 7.1 installed from one of the Apple software recovery CD's.  I could swear that the 475 supports all the way up to 8.1?  Anyone know why it is rejecting all my attempts to install various versions? 

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When 475s and 605s are overclocked (or underclocked), it changes their gestalt ID to one that the installer doesn't recognise (and was never used by Apple in a shipping product). 

 

If you have a spare 475 board, you can install using it and swap the overclocked one back in - or, I think, booting from another drive with 7.1 installed and wish I were installed to change the ID back to an original 475s, and running the 7.5 installer from there may work. If you're really stuck, undo the overclock, install, and then re-do the overclock. 7.5 is happy to *boot* after it's installed, the problem is just the installer.

 

You could also probably install a system for all macintoshes on another machine and just swap the HD in if you have a non-475 hanging around.

 

It's been a long while since I've had to deal with that oddity on my Q605s, my most recent install has been running since 2015 or so - memory is a bit faded there.

 

There's a little about the gestalt IDs for 475/605s here https://en.wikipedia.org/wiki/Macintosh_Quadra_605#Gestalt_IDs

Edited by Danamania
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I tried command, option, and command option, when running the Install MacOS program off the 7.6 CD and it didn't help.  I just keep getting the message "This Program does not run on this computer model."

 

I'm gonna try WishiWere next.

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Okay, WishiWere solved one problem but now I have another.  I get the installer going, and it is about to install, and then it tells me I don't have enough space to install.  I think the problem is that I have 7.1 installed on a 4GB partition.  That is all I could previously get to install.  But I don't believe 7.1 can see more than 2GB so it is confused about the size of my 4GB and 3GB partitions (I tried them both). 

 

I can boot from the CD but then the WishiWere extension isn't running and I can't install. 

 

I seem to be stuck. 

 

I guess I'll have to go back to the idea of installing the software on a normal not overclocked 475. 

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Even better, you can use Disk Copy to make an image (500MB should be plenty) and install to the image from within your booted OS with wishiwere running. Then you could transfer the contents to the real volume (I've done this plenty of times.)

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Posted (edited)

Oh jeez.  The stock 475 for some reason isn't honoring the shift-option-command-delete-4 command to boot off the CD-ROM drive at SCSI ID 4.  The other one did it just fine. 

 

Anyways, I think I figured it out.  I booted off the 8.1 disk tools image that comes with the Floppy Emu and then ran the 7.6 installer from that, while the SCSI2SD device is on a stock 475.  Installing now

 

@jeremywork I am remiss in setting up a time for us to get together and work on stuff. I could certainly use the help. 

Edited by pcamen
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3 minutes ago, jeremywork said:

Even better, you can use Disk Copy to make an image (500MB should be plenty) and install to the image from within your booted OS with wishiwere running. Then you could transfer the contents to the real volume (I've done this plenty of times.)

Well done sir!  I gotta remember this one. 

D4E72DA5-94A8-4636-801C-B78A0BE47802.gif.b82acc6d3a4d66d3a59ade5fefdbca20.gif

 

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10 minutes ago, jeremywork said:

Even better, you can use Disk Copy to make an image (500MB should be plenty) and install to the image from within your booted OS with wishiwere running. Then you could transfer the contents to the real volume (I've done this plenty of times.)

Oh, I think I get it.  I would have to boot to the floppy emu or something I guess to be able to overwrite the system folder on what would otherwise be the boot volume.

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1 hour ago, Fizzbinn said:

Well done sir!  I gotta remember this one. 

D4E72DA5-94A8-4636-801C-B78A0BE47802.gif.b82acc6d3a4d66d3a59ade5fefdbca20.gif

 

Gladly! This trick is great for quickly building a multiboot volume too. It'll make sure the installer doesn't 'upgrade' stuff from older systems you may have installed on the same volume.

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Alrighty then.  Got the Farallon card installed and the machine is on the network.  That was much easier than I imagined. 

 

I'm a little curious though, in the chooser, my a2server doesn't show up.  On my Mac Mini running 9.2.2 I had the same problem and had to browse to it by IP address.  But under 7.6 the chooser doesn't give that option.  How do I show an Appleshare server by IP address? 

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Oh brother, this is what kills me about this hobby.  I put the cover on and now the 475 doesn't recognize the SCSI2SD at all.  I get a quick blink on the activity light on the SCSI2SD and then some time later the Mac informs me it doesn't have a startup volume. 

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3 minutes ago, pcamen said:

Oh brother, this is what kills me about this hobby.  I put the cover on and now the 475 doesn't recognize the SCSI2SD at all.  I get a quick blink on the activity light on the SCSI2SD and then some time later the Mac informs me it doesn't have a startup volume. 

Do you have an external SCSI zip drive or MO that you could boot from?

BTW, do you have a fan on the full 68040? It mightn't be a bad idea.

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Ok, I booted from the OS 7.6 CD.  Looks like what happened is that after installing the 7.6.1 update, the system folder became unblessed.  It just so happened that the timing was just before I put the top on the 475 so that was a red herring. 

 

How the heck to I bless it again? 

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Okay, as per Jag's House page, opening and closing the system folder a couple of times re-blesses it.  Not sure if this works for early than 7.6, but I'm glad to know the trick. 

 

Next challenge ... after upgrading to 7.6.1, the option to have resolutions higher than 640x480 has disappeared from the Monitors control panel Options screen.  It was there before.  And I did notice that about every other boot, it would go back to 640x480 with other options missing, but then a reboot would fix it. 

 

My 475 has 2x512k VRAM chips in it so should be able to 1024x768 and one greater resolution. 

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7 minutes ago, pcamen said:

Ok, I booted from the OS 7.6 CD.  Looks like what happened is that after installing the 7.6.1 update, the system folder became unblessed.  It just so happened that the timing was just before I put the top on the 475 so that was a red herring. 

 

How the heck to I bless it again? 

One of my tricks (also works like System Picker) is to remove the "System" file from the System folder and add it back in. The System Folder should then change its icon to indicate it's a System Folder. Only one System Folder can be active, so this won't work if another one is already blessed. 

 

So:

 

Remove System from active System Folder

Remove System from desired target System Folder

Replace System in desired System Folder (will be blessed)

Replace System in active System Folder (can't re-bless because the other one is already blessed)

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