boot an alternate kernel

[Bob]

** Reply to message from Aaron Rainbolt <arraybolt3 at gmail.com> on Thu, 26 May
2022 19:56:50 -0500

> > SDA1 is the grub partition
> > SDA2 is a small Ubuntu test partition.  Home and root in the same partition.
> > SDA6 Is a FAT32 drive shared by all the operating systems.
> > SDA7 Is /home for SDA9.
> > SDA8 Is swap.
> > SDA9 Is the default boot partition - Ubuntu root
> >
> > Since there is only one grub partition I assumed that updating grub would keep
> > everything current.  With this current problem it does not seem to work that
> > way.  Updating from SDA9 did not update the grub menu but updating from SAD2
> > did update the grub menu.  Which means the I have been lucky since I got this
> > system in that nothing broke boot previously, it just may have not booted the
> > latest kernel for SDA9.
> 
> By a "grub partition", do you mean "bios-grub", or do you mean a
> separate "/boot"? If you mean a separate "/boot" partition, that's
> almost certainly your culprit - you probably need to do "sudo mount
> /dev/sda1 /mnt; sudo grub-mkconfig -o /mnt/boot/grub/grub.cfg" to
> update the boot menu properly. (And if that does the trick, you'll
> want to do an fstab tweak so your system updates the boot menu
> automatically.)
> 

SDA1 is the bios-grub partition.

-- 
Robert Blair


A liberal is someone who feels a great debt to his fellow man, which debt he proposes to pay off with your money.  -- G. Gordon Liddy