kernel --type=netbsd /bsd
/boot too old: upgrade
I was surprised to see that these unofficial quite old instructions were far more useful, although not exactly complete. I confirm it’s not possible to boot directly OpenBSD using the NetBSD way. Even using
--type=openbsd which is strangely documented in an other place of the manual. It seems to be an alias for
--type=netbsd, though. The answer is chain-loading. The last trick is to use the correct device name for an OpenBSD partition, which I guessed otherwise.
Having an OpenBSD partition using the full second IDE hard drive, the relevant section of
/boot/grub/menu.lst should read:
That’s all. So, the GRUB documentation is slightly incorrect and not exhaustive. No big deal.
But, wait… It’s around 7 years this problem exists and hitted people. Maybe it’s a good time to fix up the doc?