a bit late, but fwiw - I have 7.5 on an optiplex 990 on SSD, no issues. Not quite a 980, but I honestly doubt that this matters given my experience on these boxes. (I also have 7.5 on a 960, and have had it on a 955 and 945. There’s nothing special about the Dells that I have and booting MBR with SSD.) AHCI vs IDE shouldnt matter for booting (but IDE is slower), but if you had the ports in RAID mode it might.
# dmesg|egrep 'OpenBSD|Opti|INTEL' OpenBSD 7.5 (GENERIC.MP) #82: Wed Mar 20 15:48:40 MDT 2024 bios0: Dell Inc. OptiPlex 990 sd0 at scsibus1 targ 0 lun 0: <ATA, INTEL SSDSC2BB16, D201> naa.55cd2e404b451004 > On Apr 23, 2024, at 2:08 PM, Martin <i...@protonmail.com> wrote: > > Turns out this machine, for some reason, simply cannot boot of SSDs with > neither OpenBSD or FreeBSD on the box. Only spinning drives work. > > It's an old Dell Inc. OptiPlex 980. > > I suspect there is some issue with the BIOS of the machine and the BSD > bootloaders as Linux with GRUB works on SSDs. >
