[Ronie]

Create EFI shell boot USB

• Format a USB stick fat32
• Create the following directory structure within the USB device:
  
  • EFI/BOOT
• Download the EFI shell
  
  • https://github.com/tianocore/edk2/ra.../X64/Shell.efi
• Copy EFI shell to /EFI/BOOT/BOOTX64.EFI

Reboot and select the USB stick from your BIOS boot selector. You should boot to the EFI shell.
Quick Reference Guide

• map - Lists devices that you can boot from.
• drive: - Change to the drive you select. Ex. FS0:
• ls or dir - List the content of the selected drive.
• cd - Change directories.
• bcfg - Boot configuration, used to read and write BIOS boot data.

Add OC to your BIOS

• First, use map to find your devices.
• Once you have an idea of your device, select it by typing DEVICE: replacing device with the actual device. Ex. FS0:
• Use ls to determine the content of the device. It should contain an EFI folder. Use ls EFI to look inside the EFI folder. Within the EFI folder you should find BOOT and OC. Use caution to make sure this device is not your USB stick.
• Use bcfg boot dump to view your currently configured boot devices (you may see your USB in this list for validation).
• Use bcfg boot add 00 {The device containing your EFI}:\EFI\BOOT\BOOTX64.EFI OpenCore to add an entry to the beginning of your boot map.
  
  • ex. bcfg boot add 00 FS0:\EFI\BOOT\BOOTX64.EFI OpenCore
  • Note: 00 is the boot order ranking, 00 being the very first one, and it increments by one, 01 being the second, 02 being the third and so on.
• Rerun the boot dump command to verify.
• Reboot.