boot an alternate kernel

[Bob]

** Reply to message from Oliver Grawert <ogra at ubuntu.com> on Thu, 26 May 2022
11:50:13 +0200

> hi,
> Am Mittwoch, dem 25.05.2022 um 18:04 -0700 schrieb Bob:
> 
> > I tried the grub-install command 
> 
> this is almost always the wrong command, it will just overwrite the
> bootloader executable on disk, but not change any config. 
> 
> the proper command to re-generate your bootloader config in ubuntu is:
> 
>     sudo update-grub
> 
> ciao
> 	oli
> 

Thank you for that information.

I did the update-grub command but it did not work.

I have two partitions with Ubuntu installed SDA2 and SDA9 on the computer. 
SDA9 is the main partition with a separate home, SDA2 is a small partition with
root and home.  I have run software updates on both partitions many times and
have not had problems even if they did update grub.

This time the update for grub from SDA9 did not work.  I finally booted SDA2
and ran update-grub which worked.  In the past it appeared that update grub
worked from either partition.  Should it work from only one partition or should
it work from either partition?

-- 
Robert Blair


If it be asked, what is the most sacred duty and the greatest source of our security in a Republic?  The answer would be, an inviolable respect for the constitution and laws. -- Alexander Hamilton