Re: Boot fails on Sun Ultra 45

[David Brownlee <abs%absd.org@localhost>]

On Thu, 29 May 2025 at 20:24, Alexander Schreiber <als%thangorodrim.ch@localhost> wrote:
>
> On Sun, Apr 06, 2025 at 05:53:28PM +0200, Julian Coleman wrote:
> > Hi,
> >
> > > Thank you for this idea.  I saw some posts about earlier Sun Ultra
> > > models having a limit of 4 gb for the root partition. I reinstalled
> > > with a boot partition of 4 gb, and the firmware was able to find all
> > > the files it needed to boot successfully.  Thanks to all for your
> > > help.
> >
> > Glad to hear that it's working!
>
> To confirm: My Ultra-45 would not boot from disk with a 100G root
> partition. Reinstalled with 3.8G root partition (still ludicrously
> large with a massive 2% used after install (/usr on separate partition))
> and it booted from disk just fine.
>
> The root disk there is a 465GiB (or 500 marketing-GB) SAMSUNG HD502IJ.
>
> > I added a note to the sparc64/boot manual page a while ago, after testing
> > on U1 and U2 machines.  See the bugs entry at the end of:
> >
> >   https://man.netbsd.org/sparc64/boot.8
>
> Looks like the Ultra-45 (and it's budget cousin, the Ultra-25, presumably)
> can be added to the "can only boot from the first 4Gb of the disk" list.

Since we cannot be sure _where_ on a partition a kernel ends up, I
wonder if it would be worth setting up a disk with a root partition
from 2GB-4GB to confirm that the limit is really 4GB and not 2GB?

Thanks

David