Ubuntu 20.04.6 LTS apt problems - how to upgrade f/w?

[Goh Lip]

On 28/11/2024 00:21, Nils Kassube via ubuntu-users wrote:
> On 27.11.24 Bo Berglund wrote:
>> On Wed, 27 Nov 2024 12:47:08 +0100, Nils Kassube via ubuntu-users
>> <ubuntu-users at lists.ubuntu.com> wrote:
>>
>>> On 27.11.24 Bo Berglund wrote:
>>>> menuentry 'Ubuntu 20.04.3 LTS (20.04) (on /dev/nvme0n1p5)'
>>>
>>> So you also have an older Ubuntu version on the system.
>>
>> It seems like there is, I remember that when I started this Linux device a
>> number of years back it was migrated from an older machine that also had a
>> desktop version on the side, which I only used a few times.
>
>>> Could it be that you actually boot from the grub menu of 20.04.3?
>>> I would suggest to mount /dev/nvme0n1p5 and check if there is a grub
>>> entry for your current kernel there.
>>
>> I have mounted the partition now and it sure looks like a linux system.
>> If I go into it I find:
>>
>> $ ll boot/grub/grub.cfg
>> -r--r--r-- 1 root root 15508 2021-10-31 11:24 boot/grub/grub.cfg
>>
>> $ ll etc/default/grub
>> -rw-r--r-- 1 root root 1210 2021-10-29 11:23 etc/default/grub
>>
>> The dates show when this was last used, I guess, so 3 years ago...
>
> Right, it is quite long ago since you updated that partition. I mean "20.04.3" indicates the same.
>
>> Looking on the grub of that not running machine:
>>
>> $ grep "menuentry " boot/grub/grub.cfg
>
>> menuentry 'Ubuntu, with Linux 5.4.0-89-generic (on /dev/nvme0n1p6)' <== HERE
>
>> So the kernel I cannot get away from is *not* part of the "other" linux since it
>> is listad as coming from /dev/nvme0n1p6 (my active machine) while the partition
>> for the other Ubuntu is /dev/nvme0n1p5....
>
> I think you can still boot the current kernel from the boot menu of the old system because you have a menuentry there. It doesn't matter that the actually used partition is nvme0n1p6 and not nvme0n1p5. Please check the line like
>
>     set default="0"
>
> near the top of the grub.cfg file on nvme0n1p5. If the number is "8" (if I counted right) you are very likely booting with grub from the other partition.
>
>
> Nils
>
>
>
>


Grub Legacy (not UEFI) will not work on a NVME drive.
Need to boot in UEFI and grub installed in an EFI partition.
It is extremely rare to have a BIOS that can support NVME in legacy mode.