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Did you mount the efivars when in chroot?

You cannot use #, but must use partition number where grub is, either the one in the ESP, or the one in your install.

hd0,msdos1
You have old...

Please use Code tags with text or terminal output.
And with Boot-Repair better to just post link it provides to pastebin site for your report.
How to use Code tags, # in Forum's advanced editor...

You cannot run fsck on a drive like sda, only on formatted partitions.
And fsck is for Linux ext2, ext3, or ext4 formats. Different tools for other formats.

Suggest a full chroot into your...

The question mark is not in the gdisk command, but once in gdisk you can use it to see list of valid commands. ? is not a valid command.
You can use -l that is el, not 1 or cap I as valid command to...

What brand/model system? some have specific settings in UEFI settings.

Note sure if anything works as long as you have locked NVRAM.

I also show an error on modprobe,

fred@Z170-jammy:~/ISO$...

Boot-Repair will not modify default Windows boot entries.
It seems something happened to your Windows install & you need Windows repairs.
Use your Windows repair/recovery flash drive to repair...

Did you actually type ? in command, or typo on post?

New systems since 2012 are UEFI with gpt partitioning.
Microsoft required vendors to install in UEFI mode with release of Windows 8.

I installed Kubuntu 22.04 to my Dell laptop with Intel 11th...

Its this to see gpt partitions:
sudo gdisk -l /dev/sda

While most tools are partition based, gpt is for the entire drive.

And you run commands per this:...

Backup anything in your Windows install you want to keep.

My Dell was repaired and I believe it was a new motherboard. I think they did not correctly update the Microsoft Product key which Windows...

When you say UEFI/BIOS are you referting to boot menu or system settings?
System must show drive as Boot-Repair report shows it.
And Ubuntu entry is missing from UEFI boot menu.

Make sure UEFI...

You have an UEFI system.
You have grub installed in MBR for old BIOS boot and grub in the ESP - efi system partition for UEFI boot.
And you have the very old MBR(msdos) partitioning. Ubuntu allows...

You are using UEFI with UEFI Secure boot off.
That is what I use, although some like Secure Boot on and maybe in future I will turn it on.

It took me all of a few seconds to change HTML to code.

Back to gpt issue.
Have you done a write w to update gpt partition table with gdisk.
Review gdisk instructions, again....

Code tags not HTML code. Or # icon in Advanced.
Often if using Quick Reply which only has quote tags I use those & edit to be code.
If using Quick Reply then
at the beginning and at the end.

I have run grub-install from my UEFI install without errors.
It defaults to use ESP - efi system partition mounted in fstab.
So do you not have an ESP in fstab? Or is it from a drive that now does...

Please go back and add code tags.
While I can do it, you need to know how.
Can you not click on the larger Go Advanced box at bottom for a post?
How to use Code tags, # in Forum's advanced editor...

Windows not shown.
Can you directly boot Windows from UEFI boot menu. Same menu you use to choose boot of USB flash drive installer.
Lets see all the details of your configuration:.

Please copy...

One of the first things I change is to remove quiet splash & replace with noplymouth.
Seems to boot faster, or just may be seeing something happening is better than staring at logo screen.

Please use Code Tags, Easy to add with Forum's Go Advanced Editor & # icon.

You only showed info on one partition, your ESP.

Do you have good backups of data?
And backup of partition table...

Best to check.

Use gdisk and verify partitions are correct with p, or v to review issues, and use w to write the partition table. If not correct just use q to quit. That should update primary,...

Kubuntu install worked without issue, to my HDD sda drive where main 22.04 install is on NVMe drive.
Too used to NVMe and tuning that 22.04 boots very quick. Noble took over 40 sec from HDD to boot....

I use Kubuntu and just noticed new ISOs
http://cdimage.ubuntu.com/kubuntu/daily-live/current
2024-04-07 08:28

So now running this to update my ISO in /ISO folder

zsync...

Are you installing to a second drive and using 22.04 or a flavor that still uses the Ubiquity installer.
It has this bug that wants an ESP on the "first" drive. Whatevery UEFI/BIOS calls first...

You can move /home, but i prefer to keep /home inside each install. I may want different settings and sometimes if installs are different you should not share a /home.
To move /home uses rsync- Be...