MP 1,1-5,1 opencore big sur install non efi card

[apsingh]

Pretty much on the last step, trying to update my 5.1 to big sur with opencore. Cant get into boot selector since I dont have efi card in it , the ati burned out recently. Anyway around this since I need to boot from the usb . So far holding down option does not work, neither does trying to get into recovery mode via terminal do it.

 

[rm5]

What you do is:

1. Get a cheap god-awful $20 NVIDIA GT 120 or a new Radeon HD 5770 for like $40—make sure it's the Mac-flashed version.
   1. Just don't believe the lies about the card being an "all-around awesome powerhouse" or whatever - being able to "do anything you throw at it" - NOT TRUE!!
2. Boot up into the good-old boot manager (hold down Option). Control-click the OpenCore USB drive or whatever you have OCLP installed on.
3. Boot into the usb installer and make sure it works
4. Then put the non-EFI card back in, and boot the system. Since you control-clicked the OCLP drive, it should always boot to that.

Done! Hope this helps!!

 

[rm5]

On another note, what card is the non-EFI one you're trying to use?

 

[Macschrauber]

1st post of the sticky open core thread:

>your Mac has a standard graphics card

➊ Reboot and hold Command-R to enter Recovery. You can also use the following command:

sudo nvram "recovery-boot-mode=unused" && sudo reboot recovery

⚠️ Be patient. Without boot screen support, it may take a while before something appears on your screen.

➋ In Terminal (Menu bar > Utilities > Terminal), enter the following command:

diskutil list

➌ Look for your ESP, noting its identifier. It will be something like diskAs1.

➍ Enter the following command, replacing "diskAs1" with the actual identifier of your ESP:

diskutil mount /dev/diskAs1

➎ Enter the following command:

bless --mount /Volumes/EFI --setBoot --file /Volumes/EFI/EFI/BOOT/BOOTx64.efi

➏ Reboot.

OpenCore will start and is selected for booting automatically.