Good advice, thanks! I'm presuming that these are the GPU failures that you can supposedly fix by baking them at 200C for 10 minutes?
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Late 2009 27" iMac - no OS
- Thread starter DCBassman
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Unfortunately that is not a 'fix' so much as just a band-aid. It's only a temporary solution, and you're likely to suffer from major graphical artifacts at this point. Sometimes it doesn't work at all. You can replace the GPU in these iMacs with a more reliable one (and the power supply, those were fairly unreliable too).
…begging the question, do quad-cores work in the 2010 21.5”?
Also it's a really risky activity to carry out health wise, especially with your domestic oven that you'll then cook food in. This is a good Reddit post on the topic and predictably there were "it worked for me!" responses which missed the OP's point.
“It [twitch] worked [twitch] for [twitch] me! [twitch] [twitch] [twitch] [twitch]”
I tried 3 times (2 x HD4850, 1x HD6970m) with total failure.
Had to buy better cards (M4000m, M6100, WX4150, WX4170, K1100m) to fix the issue.
And it worked beautifully with the upgraded cards.
Well, the plot thickens!
Just went to a car boot/yard sale and picked up a pristine, boxed Mac Pro 3,1.
£20, just needs drives, have plenty of them.
Result!
Just went to a car boot/yard sale and picked up a pristine, boxed Mac Pro 3,1.
£20, just needs drives, have plenty of them.
Result!
I just bothered to check the box properly. Inside the peripherals box were some more drive sled screws and the original manual. It really was my lucky day!
After successfully pushing the above-mentioned Mac Pro 3,1 to Catalina, I'm now pretty certain I can repeat the process for the iMac. I might actually be beginning to enjoy this...
In fact, neither will run Catalina properly without graphics upgrades, so this iMac is back to running Mint 21.1, and the cMP back to El Capitan.
I really want that to run Linux, but I cannot get it to boot anything except macOS USB sticks.
I really want that to run Linux, but I cannot get it to boot anything except macOS USB sticks.
I’ve had success with balenaEtcher for Linux isos.
You can buy a PC graphics card quite inexpensively and providing its chipset is supported, install that into your cMP. If it has the stock GPU then an upgrade would be necessary anyway as it would be terribly outdated and you'll experience a noticeable performance boost. The only hitch would be that you'd lose the Apple boot screen during power up but personally I can live with that. I have a PC graphics card in my cMP and it works perfectly.
Once I learned the commands, I enjoyed success creating them using the Terminal.
You can useOnce I learned the commands, I enjoyed success creating them using the Terminal.
bs=8m instead of bs=1m to use a larger block size and greatly speed up dd. In your thread, it was writing to the USB at a glacial 2 MB/s.
No wonder it took so long!
Thanks. I'll keep that in mind if I ever decide to coax Linux Mint onto my Mac Pro. Speaking of that machine, there's work to attend to...
It really doesn't seem to matter what I write them with, it just doesn't see them at all...
The iMac just worked, on a generic stick I created in Rufus on my PC. Didn't even need to be specifically GUID, it just worked.
However, I have now solved this. I wrote the ISO to an external SSD, then plugged that direct into a drive bay.
The 3,1 now runs Mint 21.1, rather well, too! Blow-by-blow details, such as they are, in the "Won't boot live linux USB" thread in Mac Pro forum.
However, I have now solved this. I wrote the ISO to an external SSD, then plugged that direct into a drive bay.
The 3,1 now runs Mint 21.1, rather well, too! Blow-by-blow details, such as they are, in the "Won't boot live linux USB" thread in Mac Pro forum.
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