TLDR
Enter a command. For example: rolldice, fossil ci, trust, cuyo.

efibootmgr

 
Manipulate the UEFI Boot Manager. More information: https://manned.org/efibootmgr.
 
  • List the current settings then bootnums with their name:
     
    efibootmgr
     
  • List the filepaths:
     
    efibootmgr -v
     
  • Add UEFI Shell v2 as a boot option:
     
    sudo efibootmgr -c -d {{/dev/sda1}} -l {{\EFI\tools\Shell.efi}} -L "{{UEFI Shell}}"
     
  • Change the current boot order:
     
    sudo efibootmgr -o {{0002,0008,0001,0005}}
     
  • Delete a boot option:
     
    sudo efibootmgr -b {{0008}} --delete-bootnum

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