Opencore Legacy can't bless USB installer

[kurtiejjj]

Hi, trying to create a bootable USB installer via the OpenCore Legacy Patcher guide to get Big Sur running on my 2011 Imac. I followed the steps in the guide. As I have an non-flashed Nvidia GPU in the system I need to bless the EFI folder of OC as advised here. Completely stuck at this point as it's throwing an error when I enter following in terminal:

sudo bless --verbose --file /Volumes/EFI/EFI/OC/OpenCore.efi --folder /Volumes/EFI/EFI/OC --setBoot

It looks like the terminal succesfully finds the EFI mountpoint and files (as I mounted the EFI prior) but then runs into an error at 'Setting EFI NVRAM'. Error comes up as:

Could not set boot device property: 0xe00002e2

I definitely made sure to disable SIP in the OCLP, also the USB is formatted as GUID. Anything else that I may be missing?

 

[joevt]

Boot with an OS that doesn't require OCLP. Then do the bless from there.

Also, --folder is for HFS+ or APFS, not for FAT or EFI partitions. Should use the --mount option instead:
sudo bless --verbose --mount /Volumes/EFI --file /Volumes/EFI/EFI/OC/OpenCore.efi --setBoot

Use the dumpallbootvars command from gfxutil.sh to see how the commands affect the boot variables.
https://gist.github.com/joevt/477fe842d16095c2bfd839e2ab4794ff

 

[kurtiejjj]

Thanks, I've managed to resolve this in a different way. For my particular scenario the USB's EFI needed to be blessed on the machine I was looking to install on, and in recovery mode.

 

[sirroderick]

Thanks, I've managed to resolve this in a different way. For my particular scenario the USB's EFI needed to be blessed on the machine I was looking to install on, and in recovery mode.

Do you mean just run the above UNIX script in recovery mode? Can it really be that simple? I've been trying (& failing) to upgrade my Mac Pros to Big Sur for quite a long time now and I've never seen that mentioned before.

 

[sirroderick]

Do you mean just run the above UNIX script in recovery mode? Can it really be that simple? I've been trying (& failing) to upgrade my Mac Pros to Big Sur for quite a long time now and I've never seen that mentioned before.

command not found. def not a typo. can only assume file path of my USB installer is different. Not sure how to check that