On Sun, 6 Jul 2025, beaker wrote:

Thanks but my system isn't UEFI so I think this won't work but I'll
squirrel this away for future reference.


So, you want BIOS + GPT? Hmm, this'll be a bit tricky, I think.

On Mon, 7 Jul 2025, beaker wrote:

# determine which wedge to install primary bootstrap to:
$ sudo dkctl wd0 listwedges
/dev/rwd0: 6 wedges:
dk5: e8b85d79-899f-4cd6-964e-af3db098e992, 2048 blocks at 2048, type:
dk0: Boot, 1046528 blocks at 4096, type: msdos
dk1: Debian, 268435456 blocks at 1050624, type: ext2fs
dk2: NetBSD, 125829120 blocks at 269486080, type: msdos  # <<<


This should be type `ffs', but, no matter because, ...

# reboot and attempt GRUB 'chainloader (hd0,gpt3)+1':
=> ERROR NO SLICE


I don't think bootxx_ffsv2 understands GPT. Here, I think it finds only the
Protective MBR (and no NetBSD-type primary partition) and throws this error.

Try creating an Hybrid MBR with an NetBSD-type MBR entry with start and size
corresponding to that of `dk2' (gdisk(8) on Linux).

-RVP

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