update to monterey on OpenCore Legacy

[dimasgsm]

Hello! Sorry for my English. Can help me with update to monterey on OpenCore Legacy. I have imac 27-inch 2012 (iMac14.2) with two disk (256 ssd native and 3tb sata).

Imac work on Catalina (latest support to it) and I use OpenCore Legacy to update to Bigsur 11.2.1 and all was perfectly. I am not use this imac. I receive it back on freeze boot about 30% ( I think imac was updated to newest version on BigSur on Monterey). I try use bootable usb BigSur 11.2.1 created by OCL (open core legacy) but it not load (stuck about 70-80%). I user original bootable usb with Catalina and it not boot too.

Use another macbook air 2012 and created bootable usb with Ventura by OCL. Connect to imac and it load, I deleted disk (with all partition) and start clear install. Install was freeze on last stage. Thats all..

Now, no one native bootload mac (monterey / mojave / sierra / high sierra) not load. Load only bootable OCL Monterey USB and I can use terminal. Windows 10 was successfully installed from usb.

I try use usb hub 2.0, usb disk 2.0, connect usb mouse and keyboard. Result the same.

From macbook air 2012 I copy EFI partition and dump nvram variables. Write it to my imac (by target mode disk). No one result.

Internet recovery not work too ( last version and factory version). Stack on load about 70%.

Using verbose mode on installing OCL Monterey I see error with AppleUSB20HubPort / AppleUserHIDEventDriver closed.

Try copy EFI partition from OCL bootable Monterey to my imac SSD disk, not show bootable devices.

I see need do port mapping. How it can be do from non working iMac?

Can please help? Or how can restore native Catalina mosOS?

 

[Feartech]

Hello! Sorry for my English. Can help me with update to monterey on OpenCore Legacy. I have imac 27-inch 2012 (iMac14.2) with two disk (256 ssd native and 3tb sata).

Imac work on Catalina (latest support to it) and I use OpenCore Legacy to update to Bigsur 11.2.1 and all was perfectly. I am not use this imac. I receive it back on freeze boot about 30% ( I think imac was updated to newest version on BigSur on Monterey). I try use bootable usb BigSur 11.2.1 created by OCL (open core legacy) but it not load (stuck about 70-80%). I user original bootable usb with Catalina and it not boot too.

Use another macbook air 2012 and created bootable usb with Ventura by OCL. Connect to imac and it load, I deleted disk (with all partition) and start clear install. Install was freeze on last stage. Thats all..

Now, no one native bootload mac (monterey / mojave / sierra / high sierra) not load. Load only bootable OCL Monterey USB and I can use terminal. Windows 10 was successfully installed from usb.

I try use usb hub 2.0, usb disk 2.0, connect usb mouse and keyboard. Result the same.

From macbook air 2012 I copy EFI partition and dump nvram variables. Write it to my imac (by target mode disk). No one result.

Internet recovery not work too ( last version and factory version). Stack on load about 70%.

Using verbose mode on installing OCL Monterey I see error with AppleUSB20HubPort / AppleUserHIDEventDriver closed.

Try copy EFI partition from OCL bootable Monterey to my imac SSD disk, not show bootable devices.

I see need do port mapping. How it can be do from non working iMac?

Can please help? Or how can restore native Catalina mosOS?

i have moved your post to iMac support

 

[dimasgsm]

Thanks. Maybe someone have idea what I can do.

 

[Feartech]

Thanks. Maybe someone have idea what I can do.

you wouldn't need to do usb port mapping on a real mac

best bet is to create a usb installer, the version of macos that came with your mac and boot from that if you are unable to boot into recovery properly

 

[dimasgsm]

Thats problem.
No one original usb installer not load, it freeze about 70-80% of load. I wait 1 hour and no result. I try Sierra / High Sierra / Mojave / Catalina.
And can not see log of load usb installer.

 

[Feartech]

Thats problem.
No one original usb installer not load, it freeze about 70-80% of load. I wait 1 hour and no result. I try Sierra / High Sierra / Mojave / Catalina.
And can not see log of load usb installer.

does it reach recovery?

 

[dimasgsm]

Recovery not load (OCLP Monterey not work)

 

[dimasgsm]

Internet recovery not load too (Latest version and Factory version). Freeze the same
BootRom Version - 433.140.2.0.0

 

[dimasgsm]

Sorry, problem with Video Card. Need replace it