On Mon, Apr 18, 2022 at 5:17 AM Thomas Schmitt <scdbackup@xxxxxxx> wrote: > > Hi, > > Dominik 'Rathann' Mierzejewski wrote: > > > > Dell XPS 15 L502X 8GB RAM (BIOS only) > > BIOS-only on a laptop might mean the firmware quirk which demands > to see the "boot/active" flag at some MBR partition table slot. > > See a thread of grub-bug (and later grub-devel) from 2015/16 > https://marc.info/?l=grub-bug&m=145052506901159&w=2 > where Alexander E. Patrakov wrote: > "Subject: [bug #46716] Protective MBR partition is not marked as bootable > [...] > Changing the byte at offset 0x1be to 0x80 in the resulting iso makes > it bootable on such boards." > > This led to the creation of xorrisofs option --mbr-force-bootable in > xorriso-1.4.3. This sounds equivalent to the pbmr_boot option in parted. If so, it's a catch-22 because without the bit set it means some buggy BIOS systems won't boot; but with the bit set it means older versions of Tianocore or anything based on Tianocore up until maybe 6 months ago, won't boot. -- Chris Murphy _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
