Comment 3 for bug 1892092

Well this is curious:

Aug 18 19:52:48 ubuntu ubiquity: Secure Boot not enabled on this system.
Aug 18 19:52:51 ubuntu grub-installer: info: Installing grub on '/dev/sda'
Aug 18 19:52:51 ubuntu grub-installer: info: grub-install does not support --no-floppy
Aug 18 19:52:51 ubuntu grub-installer: info: Running chroot /target grub-install --force "/dev/sda"
Aug 18 19:52:52 ubuntu grub-installer: Installing for x86_64-efi platform.
Aug 18 19:53:05 ubuntu grub-installer: grub-install: warning: Internal error.
Aug 18 19:53:05 ubuntu grub-installer: grub-install: error: failed to register the EFI boot entry: Operation not permitted.
Aug 18 19:53:05 ubuntu grub-installer: error: Running 'grub-install --force "/dev/sda"' failed.

I can't recall ever seeing this error before.

Is there something funny with this machine that would prevent changing the OS or similar?

Thanks