Re: grub-install problem after trixie upgrade
On Sun, Aug 10, 2025 at 09:00:37PM -0400, Felix Miata wrote:
> GPT/UEFI booting predates 2012 by a number of years. Your BIOS could well
> understand it if you desired to use it.
No, I tried this when I installed Debian a few years ago - before that it ran
CentOS. I have no idea how old the BIOS is.
> Is this a fresh installation, or an upgrade? Is the RAID freshly made, or an old
> one reused without repartitioning?
It is an upgrade from bookworm so an old RAID.
> In recent years, the maximum size MBR gap has commonly been 31 sectors, or 15872
> bytes, so not enough to fit 33386 of core.img. In older MBR setups it was commonly
> 62, or 31744 bytes, still not enough.
I shall rebuild to start partition 1 at 2048 sectors.
> > Another problem is that it is 500 MB, trixie recommends that it should be 768
> > MB; a problem that I shall worry about another day.
> "It" what? A separate /boot/ filesystem? An ESP filesystem? 500 should be enough
> for either, unless employing BLS[1] booting instead of Grub2 or other older
> bootloaders. For BLS booting, other distros have been recommending 1G or more for
> ESPs.
"It" is /boot/. Documentation recommends 768 MB. After upgrade it is using
165MB, nothing near recommendation. But as I will be repartitioning I will
allocate lots and avoid headaches in years to come.
Thanks for your comments.
--
Alain Williams
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