"Could not prepare Boot variable: Invalid argument"

[almightiest]

My noble/24.04 server encrypted mirror install is failing at the end of step 4 with an error, and I could use help on how to recover/proceed:

`...
Running in chroot, ignoring request.

• sh /etc/zfsbootmenu/generate-zbm.post.d/esp-sync.sh
  78,037,802 100% 767.24MB/s 0:00:00 (xfr#97, to-chk=0/104)
  0
  1
  Could not prepare Boot variable: Invalid argument
  ubuntu@ubuntu:~$
  `

I am using the latest version of the script and configured it. Then I ran the install and selected my 2 mirror drives by id. The rest ran auto until it failed on the update_boot_manager() function.

if i run the efibootmgr command in line 1461 of the script directly I can reproduce this issue.

efibootmgr --create --disk /dev/nvme2n1 --label "rEFInd Boot Manager Backup 1" --loader \\EFI\\refind\\refind_x64.efi

returns "Could not prepare Boot variable: Invalid argument"

[almightiest]

I resolved this by going into my bios and loading factory default secure boot keys. Dunno why that worked, but that's all I did to correct it after hours of searching and tinkering.

[Sithuk]

Thank you for the feedback.