Labels on UEFI Boot Entries -- using efibootmgr -L

[Qqmike]

Labels on UEFI Boot Entries -- using efibootmgr -L

... and How to "change" an "ubuntu" label (/EFI/ubuntu)

How to create a label for a UEFI firmware NVRAM variable so you can recognize it in the UEFI firmware boot menus and the BootOrder efibootmgr listing.

Fact:
You can't change or edit an existing UEFI boot entry to add a label or change the current label.
Instead, you must create a new boot variable (pointing at the same EFI subdirectory and the same UEFI bootloader files as the existing boot variable) labeled whatever you wish to use for a label. Then, if you wish, you can delete the old boot variable.

Bottom-line command solution:

sudo efibootmgr -c -d /dev/sdx -p n -L NewLabel -l  \\EFI\\<directory_current>[B]\\[/B]<boot_loader>

I gave a Quick Summary Version and then a (much) longer Details, tutorial version.

About halfway through this, I realized that understanding this simple task (creating a label for a boot entry) requires a good understanding of how the UEFI and ESP works, if anyone cares, but it is a good exercise.

I also address how rEFInd sees things. And this business about how all Ubuntu derivative OSs share the same EFI subdirectory /EFI/ubuntu, and so have the same label "ubuntu" in the UEFI boot menu. There are at least three solutions for this, and I explain them all.

The link to this one:

Labels on UEFI Boot Entries -- using efibootmgr -L
How to "change" an "ubuntu" label (/EFI/ubuntu)

https://www.kubuntuforums.net/showth...229#post378229


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(hope you don't mind ...)

A list of my recent UEFI, booting, Kubuntu how-to's:


UEFI for Kubuntu--simplified. And ... some dual-booting tips for Kubuntu
https://www.kubuntuforums.net/showth...l=1#post373198

GPT, UEFI -- Study Guide
https://www.kubuntuforums.net/showth...l=1#post346604

A new PC build and Kubuntu-only UEFI installation
https://www.kubuntuforums.net/showth...l=1#post368216

Dual-booting: How to Use Multiple ESPs
https://www.kubuntuforums.net/showth...l=1#post376040

Dual-booting Kubuntu: A summary of your options
https://www.kubuntuforums.net/showth...l=1#post376269

Labels on UEFI Boot Entries -- using efibootmgr -L
https://www.kubuntuforums.net/showth...229#post378229

rEFInd
https://www.kubuntuforums.net/showth...l=1#post372221

rEFInd: Make a live CD to boot into your system
https://www.kubuntuforums.net/showth...l=1#post376838

Fix UEFI+GPT with Testdisk & gdisk -- Deleted partitions & damaged GPT structure
https://www.kubuntuforums.net/showth...417#post372417

Re-install GRUB2 from Live DVD/USB flash drive
https://www.kubuntuforums.net/showth...l=1#post374017

Building a Kubuntu live USB installer using dd
https://www.kubuntuforums.net/showth...aller-using-dd

Installing Kubuntu -- Using the "Manual" Installation Type, with your own partitioning
https://www.kubuntuforums.net/showth...688#post377688