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 Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 https://www.phcomp.co.uk/ Parliament Hill Computers. Registration Information: https://www.phcomp.co.uk/Contact.html #include <std_disclaimer.h>
