boot an alternate kernel

[Liam Proven]

On Thu, 26 May 2022 at 20:00, Bob <ubuntu-qygzanxc at listemail.net> wrote:
>
> I did the update-grub command but it did not work.

This is not a good response, Bob.

You should not say "it did not work". Say _what happened_. If there
was an error, attach the error. Copy and paste it. If that isn't
possible, write it down. Photograph it and transcribe it.

Or if it ran but it didn't fix the problem, _say that_.

Please don't make us try to guess. It's mean and it's rude. :-(

>
> 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.

BIOS? UEFI? MBR or GPT? Primary or logical? Shared boot or separate?
Does one boot the other? Does something else boot both? What you
describe leaves a minimum of *SEVEN* other partitions! (/dev/sda1 and
/dev/sda[3-8]).

What is in them? Why? Does it interact?

Don't make us guess! We are not psychic. Give us all the info you
possibly can. Too much is better than too little. This is not enough.
Tell us the whole story.

You know what they say in court:

"The truth, the *whole* truth, and nothing *but* the truth!"

You are not giving us the whole truth. You are the witness here. Give
all the evidence.


> 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?


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