- Joined
- Apr 5, 2019
- Messages
- 21
- Motherboard
- Lenovo LNVB161216
- CPU
- i7-8550U
- Graphics
- UHD 620 (3840x2160)
- Mobile Phone
I multiboot and using apfs fuse in linux I was able to copy off all of the data I needed from my mojave install.
I tried an upgrade to big sur 11.2.1 with open core on the latest bios and it appeared to complete the upgrade but it got stuck at the prohibited support.apple.com/mac/startup so I then erased the volume and tried a fresh install of big sur 11.2.1 which appeared to work.. and even booted.. once .. I got to a desktop and then chose restart to see if it would reboot and it has gotten stuck at the same prohibited support.apple.com/mac/startup screen. I'm using the efi from above but I'm stuck... any suggestions as how to resolve the prohibited black screen?
*time passes*
I did some more messing around and if I boot from the usb stick with open core and the big sur installer on it then I can boot up big sur that is installed on my internal hard disk. But if I copy the OC directory from the usb stick to my internal hard disk's EFI and try and boot it results in a prohibited black screen on boot.
Other issue is the touch pad doesn't work at all so I'm having to get by with my mouse (which is driving me nuts because it's so broken I should have replaced it years ago)... any fixes for the touch pad? Or things to try so I can boot big sur without having to have the usb stick plugged in?
And some of you mentioned the brightness controls don't work but for me from the top right drop down control panel brightness seems to work fine.
I tried an upgrade to big sur 11.2.1 with open core on the latest bios and it appeared to complete the upgrade but it got stuck at the prohibited support.apple.com/mac/startup so I then erased the volume and tried a fresh install of big sur 11.2.1 which appeared to work.. and even booted.. once .. I got to a desktop and then chose restart to see if it would reboot and it has gotten stuck at the same prohibited support.apple.com/mac/startup screen. I'm using the efi from above but I'm stuck... any suggestions as how to resolve the prohibited black screen?
*time passes*
I did some more messing around and if I boot from the usb stick with open core and the big sur installer on it then I can boot up big sur that is installed on my internal hard disk. But if I copy the OC directory from the usb stick to my internal hard disk's EFI and try and boot it results in a prohibited black screen on boot.
Other issue is the touch pad doesn't work at all so I'm having to get by with my mouse (which is driving me nuts because it's so broken I should have replaced it years ago)... any fixes for the touch pad? Or things to try so I can boot big sur without having to have the usb stick plugged in?
And some of you mentioned the brightness controls don't work but for me from the top right drop down control panel brightness seems to work fine.
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