Similar problem: Upgrade history: Dec 18 2015 - ok Dec 19 2015 - ok Dec 23 2015 - can not boot after that
partial outputs from commands: disklabel sd0 size offset fstype a: 146805807 829967361 RAID other not related to OpenBSD disklabel sd1 size offset fstype fsize bsize cpg a: 8388608 64 4.2BSD 2048 16384 1 c: 146805279 0 unused other related, but I don't think they are useful for this If I am wrong ask for more information. bioctl softraid0 Volume Status Size Device softraid0 0 Online 75164302848 sd1 CRYPTO 0 Online 75164302848 0:0.0 noencl sd0a machine diskinfo DISK BIOS Type Cyls Heads hd0 0x80 label 1023 255 Secs Flags Checksum 63 0x2 0xac69cac8 I am using FDE for OpenBSD current. I have upgraded as usual for me from external separate installation media. I have, as always, used bioctl to manually provision encrypted partition. bioctl -c C -l /dev/sd0a softraid0 then I run upgrade. I must admit that when I normally use OpenBSD then provisioned disc is called sd1, and when I upgrade then provisioned disc is sd2, but that never caused a problem. I have also another warning, which I usually see but never caused a problem, too. Making all device nodes… done installboot: /mnt/usr/mdec/biosboot extends beyond sector 268435455. OpenBSD might not boot. Multiprocessor machine; using bsd.mp instead of bsd. Congratulations! something >From bootloader I got: Loading ….. probing: pc0 mem[something] disk: hd0+ sr0* >> OpenBSD/amd64 BOOT 3.29 Passphrase: open (sr0a:/etc/boot.conf): can't read disk label boot> cannot open sr0a:/etc/random.seed: can't read disk label booting sr0a:/bsd:open sr0a:/bsd: can't read disk label