Another advertisement for my free-free how-to:
UEFI Simplified, a quicker version
https://www.kubuntuforums.net/forum/...l=1#post545820
The list of all my UEFI how-to's (and possibly others) is:
UEFI, GPT, ESP, GRUB2-EFI, dual-booting, fixing things
https://www.kubuntuforums.net/forum/...-fixing-things
"UEFI Simplified, a quicker version" might actually be a stand-alone how-to for many users
who are already familiar with some basic Kubuntu concepts. It's improved.
And corrected as follows:
-------------------------
Original post: 01/19/2019
Update 07/11/2026
Dolphin, file manager for Kubuntu: How to see what's in your ESP, /boot/efi? Currently, using it with root privileges is nuanced at best. See the forum for threads on this.
Here, let's mention using Krusader (under its Tools menu). Or, some are using sudo -i.
Or, NOT recommended for everyone! change fstab, ( UUID=XYZ /boot/efi vfat umask=0000 0 1).
tree: you may have to use sudo to see /boot/efi: sudo tree /boot/efi.
ESP, size: past recommendation was 100-512MiB. Based on various things, to be safe, let's use 550 MiB. (... unless you know what you're doing, in which case you could specify almost anything.)
ESP -- when you have more than one ESP: The Kubuntu installer is Calamares. and as of now, will allow you, under "Manual" installation, to specify the ESP you wish to use for the current installation (of Kubuntu).
Thus, any "old tricks" for doing this are not necessary.
Muon Package Manager: Since it hasn't been maintained for quite awhile, let's remove this and use Discover or Synaptic.
General: Edited for typos; edited to make some things more clear, perhaps adding a few details here and there. Improvements to the Cheat Sheet.
-------------------------
List of topics, in sequential order
UEFI+MBR replaces BIOS+MBR
Installing the OS in UEFI mode, doing your own partitioning, include ESP
How will you know you are booting in UEFI mode?
How UEFI booting works
ESP -- EFI System Partition
GPT -- GUID Partition Table
Two important commands: sudo gdisk and sudo efibootmgr
GRUB2-EFI, grub-install
rEFInd boot manager: recommended
Dual-booting with Kubuntu and GRUB2-EFI
Dual-booting: Summary of 5 options
Separate EFI directories for your OSs
Using more than one ESP
Changing labels on UEFI Boot entries: sudo efibootmgr -L
Fixing things: GRUB, booting issues, GPT, files
Cheat Sheet
UEFI Simplified, a quicker version
https://www.kubuntuforums.net/forum/...l=1#post545820
The list of all my UEFI how-to's (and possibly others) is:
UEFI, GPT, ESP, GRUB2-EFI, dual-booting, fixing things
https://www.kubuntuforums.net/forum/...-fixing-things
"UEFI Simplified, a quicker version" might actually be a stand-alone how-to for many users
who are already familiar with some basic Kubuntu concepts. It's improved.
And corrected as follows:
-------------------------
Original post: 01/19/2019
Update 07/11/2026
Dolphin, file manager for Kubuntu: How to see what's in your ESP, /boot/efi? Currently, using it with root privileges is nuanced at best. See the forum for threads on this.
Here, let's mention using Krusader (under its Tools menu). Or, some are using sudo -i.
Or, NOT recommended for everyone! change fstab, ( UUID=XYZ /boot/efi vfat umask=0000 0 1).
tree: you may have to use sudo to see /boot/efi: sudo tree /boot/efi.
ESP, size: past recommendation was 100-512MiB. Based on various things, to be safe, let's use 550 MiB. (... unless you know what you're doing, in which case you could specify almost anything.)
ESP -- when you have more than one ESP: The Kubuntu installer is Calamares. and as of now, will allow you, under "Manual" installation, to specify the ESP you wish to use for the current installation (of Kubuntu).
Thus, any "old tricks" for doing this are not necessary.
Muon Package Manager: Since it hasn't been maintained for quite awhile, let's remove this and use Discover or Synaptic.
General: Edited for typos; edited to make some things more clear, perhaps adding a few details here and there. Improvements to the Cheat Sheet.
-------------------------
List of topics, in sequential order
UEFI+MBR replaces BIOS+MBR
Installing the OS in UEFI mode, doing your own partitioning, include ESP
How will you know you are booting in UEFI mode?
How UEFI booting works
ESP -- EFI System Partition
GPT -- GUID Partition Table
Two important commands: sudo gdisk and sudo efibootmgr
GRUB2-EFI, grub-install
rEFInd boot manager: recommended
Dual-booting with Kubuntu and GRUB2-EFI
Dual-booting: Summary of 5 options
Separate EFI directories for your OSs
Using more than one ESP
Changing labels on UEFI Boot entries: sudo efibootmgr -L
Fixing things: GRUB, booting issues, GPT, files
Cheat Sheet