• Thanks, it gets a bit further, but this time fails with:

    grub-install: warning: Cannot set EFI variable Boot0003.
    grub-install: warning: efivarfs_set_variable: writing to fd 6 failed: Read-only file system.
    grub-install: warning: _efi_set_variable_mode: ops->set_variable() failed: Read-only file system.
    grub-install: error: failed to register the EFI boot entry: Read-only file system.
    panic: Failed to run grub-install: exit status 1
    
    • Interesting, I’m not too sure what could be causing that, but if I had to take a guess VirtualBox’s UEFI implementation doesn’t allow for writes from the VM, at least by default. It’s been a long time since I’ve used VirtualBox (since before UEFI was even really a thing), I don’t suppose there’s any sort of setting that might resemble making it writable?