iMac 12.2 27 inch open core and Sonoma

[JudeTheObscurer]

I have two 2011 27 inch iMacs 16GB with AMD 6xxxx graphics card and have given them a new external ssd (€180), installed open core and did a fresh install of sonoma and it works fine, the boot is faster than it ever was ;-)

Office 365 all apps work fine
Adobe cloud Photoshop crashes but web version runs fine Others including lightroom illustrator Dreamweaver all fine.

iPhoto, iMaps, Apple TV don’t work, I don’t care, google maps and Netflix work fine as does chrome and Firefox. Safari seems to have a few issues.

Home also works fine

I really didn’t expect it to work at all, and am really happy, I can now wait for new iMac with M3 and defer that investment

The only issue was I could not directly install to the SSD , so I installed to the slow internal SATA and then volume restored to the SSD. You can use AHCI or NVMe external SSD plugged into thunderbolt/USB4, to boot from the NVMe just select that checkbox in opencore set up.

Open Core rocks. Thanks be. For that price and no hardware modding - (I have two left hands) - love to hear other success stories.

It all started after Apple upgraded home and it stopped working on my 16,2 iMac - I was furious and didn’t want to buy a new iMac and open core and sonoma (and new ssd) work fine on that one and home (even Apple TV) as well.

 

[davidlv]

I have two 2011 27 inch iMacs 16GB with AMD 6xxxx graphics card and have given them a new external ssd (€180), installed open core and did a fresh install of sonoma and it works fine, the boot is faster than it ever was ;-)

Office 365 all apps work fine
Adobe cloud Photoshop crashes but web version runs fine Others including lightroom illustrator Dreamweaver all fine.

iPhoto, iMaps, Apple TV don’t work, I don’t care, google maps and Netflix work fine as does chrome and Firefox. Safari seems to have a few issues.

Home also works fine

I really didn’t expect it to work at all, and am really happy, I can now wait for new iMac with M3 and defer that investment

The only issue was I could not directly install to the SSD , so I installed to the slow internal SATA and then volume restored to the SSD. You can use AHCI or NVMe external SSD plugged into thunderbolt/USB4, to boot from the NVMe just select that checkbox in opencore set up.

Open Core rocks. Thanks be. For that price and no hardware modding - (I have two left hands) - love to hear other success stories.

It all started after Apple upgraded home and it stopped working on my 16,2 iMac - I was furious and didn’t want to buy a new iMac and open core and sonoma (and new ssd) work fine on that one and home (even Apple TV) as well.

This post should be in the thread about Sonoma on unsupported Macs, where you can find a lot of related information.
Use the search function before you ask, many times people have asked about things posted a few moments ago.
when you post, state your hardware, as you did, and the OCLP version, etc. Or, better yet, add that info to your MacRumors signature.
There is a wide variety of haedware out there, and each version of OCLP has seen many changes.
Recently, in the nightly versions (betas, search for the link!) there have been some important additions that may well affect those iPhoto, iMaps, and Apple TV issues you mentioned.
I suggest you check that thread out when you have time. There are many very well informed users there who can help you out when the search function doesn't cut it.