On 29-06-2020 17:13, Hendrik Boom wrote: > On Mon, Jun 29, 2020 at 12:44:05PM +0000, dal wrote: >>> From: Dng [mailto:dng-boun...@lists.dyne.org] On Behalf Of Hendrik Boom >>> Sent: den 29 juni 2020 14:18 >>> What I want to know is: >>> What determines which disks' MBRs get written to during a >>> normal kernel upgrade initiated by aptitude. >> A normal kernel upgrade does not, nor needs to rewrite MBRs. > Grub stage 1 resides within 446 bytes of the MBR. > Grub stage 1.5 resides in the spae between the MBR and the first partition. > Grub stage 2 resides in the /boot within a partition. > > It's entirely plausible that some of stage 1 and stage 1.5 may need changes. > > In any case, the last upgrade I did tried to write in the space between > the MBR and the first partition of on of my hard drives. > > I'd like it to stop trying that, letting it write to my other drives and > never boot from this one again, which I plan to remove when I find my > screwdriver. > > -- hendrik > >> /D >> >> _______________________________________________ >> Dng mailing list >> Dng@lists.dyne.org >> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng > _______________________________________________ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
According to grub documentation you can make grub-mkconfig skip a drive with one of these options in /etc/default/grub 'GRUB_DISABLE_OS_PROBER' Normally, 'grub-mkconfig' will try to use the external 'os-prober' program, if installed, to discover other operating systems installed on the same system and generate appropriate menu entries for them. Set this option to 'true' to disable this. 'GRUB_OS_PROBER_SKIP_LIST' List of space-separated FS UUIDs of filesystems to be ignored from os-prober output. For efi chainloaders it's <UUID>@<EFI FILE>
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