use Proxmox::Sys::Block qw(get_cached_disks wipe_disk partition_bootable_disk);
use Proxmox::Sys::Command qw(run_command syscmd);
-use Proxmox::Sys::File qw(file_read_firstline file_write_all);
+use Proxmox::Sys::File qw(file_read_all file_read_firstline file_write_all);
use Proxmox::UI;
# TODO: move somewhere better?
sub prepare_proxmox_boot_esp {
my ($espdev, $targetdir) = @_;
- syscmd("chroot $targetdir proxmox-boot-tool init $espdev") == 0 ||
+ my $mode = '';
+
+ # detect secure boot being enabled and switch to grub-on-ESP if it is
+ if (-d "/sys/firmware/efi") {
+ my $content = eval { file_read_all("/sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c") };
+ if ($@) {
+ warn "Failed to read secure boot state: $@\n";
+ } else {
+ my @secureboot = unpack("CCCCC", $content);
+ $mode = 'grub' if $secureboot[4] == 1;
+ }
+ }
+
+ syscmd("chroot $targetdir proxmox-boot-tool init $espdev $mode") == 0 ||
die "unable to init ESP and install proxmox-boot loader on '$espdev'\n";
}