On Sat, Aug 4, 2018 at 7:00 PM Sijmen J. Mulder <i...@sjmulder.nl> wrote: > After booting the PC pauses for a few seconds before displaying "Missing > operating system". > > What I've tried: > - "boot hd0a:/bsd" from the installation CD: works > - mark partition 0 active: works, brings up NT's bootloader > - "installboot -v wd0": no change > > Any ideas?
Boot the install CD, and run 'machine boot hd0c'. This will boot the OpenBSD partition directly, without involving the MBR. (With 'machine boot', hd0a..hd0d are the fdisk partitions, not BSD disklabel entries, so e.g. 'machine boot hd0a' should boot NT.) If that works: the OpenBSD boot loader in its partition is fine, but the MBR is not loading it correctly. Installing new MBR code, e.g. 'fdisk -u wd0', may help. If it doesn't (unlikely, since NTLDR works with the PBR): there is a problem with the PBR, or with the BIOS's ability to boot from it. Using the NT loader menu may end up being a better solution for you, but this should sort out the direct-boot case. -Andrew
