207
votes
Accepted
How to get GRUB to be the default bootloader instead of Windows Boot Manager on a UEFI laptop?
This is the longest post I've ever made on a StackExchange site, but this process requires a lot of explanation and attention to detail. It's also somewhat specific to the hardware in question, which ...
- 3,545
148
votes
Accepted
How can I reinstall GRUB to the EFI partition?
Reinstall the GRUB boot loader to your Ubuntu installation in EFI mode this way ...
Boot from the Ubuntu installation medium and select 'Try Ubuntu without installing'.
(Boot your install medium in ...
- 30.6k
107
votes
Accepted
Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?
Since Ubuntu kernel 4.4.0-20 the EFI_SECURE_BOOT_SIG_ENFORCE kernel config has been enabled. That prevents from loading unsigned third party modules if UEFI Secure Boot is enabled.
The easiest way to ...
- 87.5k
93
votes
16.04 new installation gives grub-efi-amd64-signed failed installation /target/ ubuntu 16.04 at the end
I had exactly the same issue installing 16.04 64 desktop on a new SSD with UEFI enabled using USB install media. Unlike in the question I chose to create my own partitions as I had other disks to ...
- 1,388
93
votes
Accepted
Can't install Ubuntu 18.10 on XPS 15 - EFI\BOOT\mmx64.efi not found
I booted an Ubuntu Live USB stick, went into my hard disk drive's /boot/efi folder and renamed the file grubx64.efi to mmx64.efi
Reboot the machine and it should work.
- 962
61
votes
Accepted
Booting Ubuntu from USB drive on MSI motherboard -- EVERYTHING fails
It looks like the latest bios version is 7C37v14 (Release Date 2019-09-18). Update your bios to this version in order to get the latest Linux support.
With these processors and motherboards being so ...
- 1,679
57
votes
Accepted
VirtualBox boots only in UEFI Interactive shell
I encountered the same problem and found that if I issue following command in the interactive shell, the virtual machine would boot into Ubuntu:
fs0:\efi\ubuntu\grubx64.efi
(Use backslash, forward ...
- 686
54
votes
Workaround to Install Ubuntu 20.04 with Intel RST systems
You've got a single HDD/SSD set up in RAID (RST) mode, and the Ubuntu installer won't recognize your HDD/SSD until you switch your disk setting in the BIOS from RAID to AHCI.
Making that switch comes ...
- 66.6k
52
votes
Accepted
51
votes
Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?
As suggested by user @zwets, I'm copying (with edits) an answer here:
Since kernel version 4.4.0-20, it was enforced that unsigned kernel modules will not be allowed to run with Secure Boot enabled. ...
- 7,524
49
votes
Accepted
Ubuntu: "Booting in insecure mode" with SecureBoot enabled
If you want get rid of the message about Insecure Boot you need to enable secure boot.
To do this you need turn on validation in module MOK (Machine Owner Key):
sudo mokutil --enable-validation
You ...
- 506
47
votes
What can I do to fix this error on grub-efi?
Try
sudo apt-get purge grub\*
sudo apt-get install grub-efi
sudo apt-get autoremove
sudo update-grub
to fix.
- 703
46
votes
Accepted
How to install Ubuntu 14.04/16.04 64-bit with a dual-boot RAID 1 partition on an UEFI/GPT system?
UPDATE: I have verified that the description below also works for Ubuntu 16.04. Other users have reported working on 17.10 and 18.04.1.
NOTE: This HOWTO will not give you LVM. If you want LVM too, ...
- 1,911
46
votes
Can't install Ubuntu 18.10 on XPS 15 - EFI\BOOT\mmx64.efi not found
The problem was that in the bootable USB the file mmx64.efi didn't exist, so the workaround was to copy the file grubx64.efi under the name mmx64.efi (so the USB Drive folder /EFI/BOOT now contains ...
- 471
45
votes
Accepted
Windows 10 changes UEFI boot order every time
I also faced the same issue that Windows 10 (Education) automatically, on startup, moves the Windows Boot Manager EFI entry to the top again. If I changed it, after restarting with Windows, the next ...
- 566
45
votes
Accepted
How do I remove Windows from the UEFI boot menu after custom installing Ubuntu?
Find UEFI boot entries
To remove the now useless Windows boot entry in the UEFI, first you need to find it. This can be done directly from the main Ubuntu OS. There is no need to boot from a live USB/...
- 30.2k
43
votes
Accepted
Why disabling "Secure Boot" is enforced policy when installing 3rd party modules
This is not a bug, it is a feature.
As Anthony Wong says, when you install a DKMS package you are compiling the package yourself, thus, Canonical cannot sign the module for you.
However, you can ...
- 914
38
votes
Accepted
Can I boot memtest86+ if I'm using UEFI?
Memtest86+
Edit 1: {
Memtest86+ version 6 (and newer) can be downloaded as a standalone zip file, which contains an iso file. This iso file can be cloned directly into a USB drive to make a bootable ...
- 44k
32
votes
Accepted
Proprietary NVidia drivers with EFI on Mac, to prevent overheating
For me, booting Ubuntu in UEFI mode with the Nvidia drivers loaded, also always resulted in the well-known black screen when X was started.
That was until yesterday!
After running into some very ...
- 536
32
votes
VirtualBox boots only in UEFI Interactive shell
I had the same problem (with the EFI enabled because I couldn't get it to run otherwise). Strange; although installation of Ubuntu 14.04.2 got no error, installing Kubuntu 15.04 failed to finalize. It ...
- 1,260
31
votes
Accepted
UEFI or Legacy? Which is advised and why?
For most hardware, the boot mode (EFI vs. BIOS) is irrelevant. The drivers Linux loads are identical in either case, as should be the performance. The main caveat here is that the hardware may be ...
- 43.2k
31
votes
Accepted
Ubuntu on 32-bit UEFI (only) based tablet pc
So far you're doing everything right, you just need to modify the USB so that it will boot on a 32-bit UEFI only system.
While Windows is running or on another machine, insert the USB and find a ...
- 68.5k
31
votes
Accepted
How to install Ubuntu 18.04 alongside Windows 10
After so many efforts I've figured out what went wrong while installing. Now at last I've installed Ubuntu 18.04 alongside Windows 10 Pro in dual boot mode.
I've tried to share my experience in this ...
- 900
30
votes
Accepted
How to install ubuntu in UEFI mode
In brief:
Use a 64-bit Ubuntu -- The vast majority of EFI-based PCs use 64-bit firmware, and Ubuntu is set up in such a way that you can only install a 64-bit Ubuntu on such systems -- at least, by ...
- 43.2k
27
votes
Accepted
Cannot update to 18.04 on DualBoot - "EFI System Partition (ESP) not usable"
You have to mount your ESP. This should work with:
sudo mount /boot/efi
If you get an error message like
mount: can't find /boot/efi in /etc/fstab
you have to add a line to your /etc/fstab e.g.
...
- 958
26
votes
Can't install Ubuntu 18.10 on XPS 15 - EFI\BOOT\mmx64.efi not found
The answers here all suggest modifying the file system on the live USB, which isn't really possible without rebuilding the entire ISO image as far as I have understood.
I think the reason my problem, ...
- 1,268
25
votes
Accepted
How can I display the grub during boot?
Edit the file /etc/default/grub, and find this line:
GRUB_TIMEOUT_STYLE=hidden
Change that line to:
GRUB_TIMEOUT_STYLE=menu
and most importantly, after making that change, save the file and run:
...
- 7,296
25
votes
help! W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915
Just get the file from the kernel git:
git clone https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
sudo cp ./linux-firmware/i915/icl_dmc_ver1_07.bin /lib/firmware/i915/...
- 439
Only top scored, non community-wiki answers of a minimum length are eligible