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maltau571

macrumors newbie
Original poster
Apr 2, 2022
27
1
Hi
I am new to this forum and I would like to know if it is possible to install the Catalina on my old iMac 2010
I have attached the specs of my iMac

Many thanks
 

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FreakinEurekan

macrumors 603
Sep 8, 2011
5,887
2,874
No, the specs say Catalina requires a Late 2012 or newer iMac. You’re on the highest supported version for your Mac.
 

MultiFinder17

macrumors 68030
Jan 8, 2008
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Tampa, Florida
Hi
I am new to this forum and I would like to know if it is possible to install the Catalina on my old iMac 2010
I have attached the specs of my iMac

Many thanks
Officially, no, your iMac will only run up to High Sierra.

Unofficially, yes, it can run up to Monterey using various patchers. For Mojave or Catalina, check out dosdude's website for the patching tools. Read through the instructions before you start, and be sure that you have a good backup in place before you begin.

For Big Sur and Monterey, you'd want to check out Opencore Legacy Patcher. I have my own 2010 27" iMac running Big Sur well enough. Realize that any patched version of Mac OS will come with its own tradeoffs, things that may not work perfectly, etc. Be sure to read through the patcher websites thoroughly before starting down this path :)
 

maltau571

macrumors newbie
Original poster
Apr 2, 2022
27
1
Officially, no, your iMac will only run up to High Sierra.

Unofficially, yes, it can run up to Monterey using various patchers. For Mojave or Catalina, check out dosdude's website for the patching tools. Read through the instructions before you start, and be sure that you have a good backup in place before you begin.

For Big Sur and Monterey, you'd want to check out Opencore Legacy Patcher. I have my own 2010 27" iMac running Big Sur well enough. Realize that any patched version of Mac OS will come with its own tradeoffs, things that may not work perfectly, etc. Be sure to read through the patcher websites thoroughly before starting down this path :)
Thanks for your reply. Can I use another graphics card in order to make this work safely?
 

Nguyen Duc Hieu

macrumors 68030
Jul 5, 2020
2,912
959
Ho Chi Minh City, Vietnam
Thanks for your reply. Can I use another graphics card in order to make this work safely?

Of course you can.
But it's not a walk in the park.
Starting with thorough reading the first post of this thread, and all the links to that post.

 

MultiFinder17

macrumors 68030
Jan 8, 2008
2,728
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Tampa, Florida
Thanks for your reply. Can I use another graphics card in order to make this work safely?
You can, but it’s not worth it in my opinion. Metal GPUs for those machines are at least around $100ish, and they come with their own sets of weird quirks. I’d personally just stick with the patches if you’re looking to go that route. The graphical oddities really aren’t that bad.
 
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maltau571

macrumors newbie
Original poster
Apr 2, 2022
27
1
You can, but it’s not worth it in my opinion. Metal GPUs for those machines are at least around $100ish, and they come with their own sets of weird quirks. I’d personally just stick with the patches if you’re looking to go that route. The graphical oddities really aren’t that bad.
So will the Opencore Legacy Patcher work if I decide to go that way?
 

MultiFinder17

macrumors 68030
Jan 8, 2008
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Tampa, Florida
So will the Opencore Legacy Patcher work if I decide to go that way?
Yes, it will work with both a newer GPU and the stock GPU. My 2010 27" still has its stock ATI Radeon HD 5750 1GB in it and it's been running Big Sur for the last year now. Again, there's little graphical oddities, particularly with transparency effects, but that's about it at this point. And apps that expect a Metal GPU in order to run will not run because no amount of patching will make an old GPU support APIs that it doesn't :)
 
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maltau571

macrumors newbie
Original poster
Apr 2, 2022
27
1
Yes, it will work with both a newer GPU and the stock GPU. My 2010 27" still has its stock ATI Radeon HD 5750 1GB in it and it's been running Big Sur for the last year now. Again, there's little graphical oddities, particularly with transparency effects, but that's about it at this point. And apps that expect a Metal GPU in order to run will not run because no amount of patching will make an old GPU support APIs that it doesn't :)
Sorry to ask again as I am no techie.... So it is safe to use the OCLP to upgrade at least to catalina? I saw on their video that you can also partition the disk and install it on that partition in case something goes wrong
 

MultiFinder17

macrumors 68030
Jan 8, 2008
2,728
2,050
Tampa, Florida
Sorry to ask again as I am no techie.... So it is safe to use the OCLP to upgrade at least to catalina? I saw on their video that you can also partition the disk and install it on that partition in case something goes wrong
You're good :)

It should be, yup! Though if you're going with Catalina, I'd use the dosdude1 patcher for Catalina instead. Dosdude1 for Catalina and lower, OCLP for Big Sur and newer.

Installing it on a separate partition is always a fantastic idea - that way you can play around with it a little and see if it works the way you need it to, then if it does, upgrade your main partition! And if it doesn't, just remove the new partition and be done with it.
 

maltau571

macrumors newbie
Original poster
Apr 2, 2022
27
1
You're good :)

It should be, yup! Though if you're going with Catalina, I'd use the dosdude1 patcher for Catalina instead. Dosdude1 for Catalina and lower, OCLP for Big Sur and newer.

Installing it on a separate partition is always a fantastic idea - that way you can play around with it a little and see if it works the way you need it to, then if it does, upgrade your main partition! And if it doesn't, just remove the new partition and be done with it.
ok many thanks for all your help
 
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