Questions tagged [uefi]

For questions about the Unified Extensible Firmware Interface, commonly used in later x86 computers as a replacement of BIOS, as well as in ARM servers and more. UEFI supports booting with and without Secure Boot enabled and legacy booting via CSM.

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Booting a NVMe drive

Note: this is kind of follow-up of this post: https://superuser.com/questions/1318478/booting-nvme-drive-with-a-bootloader, but I decided to post here since I'm trying to install and boot Ubuntu. ...
MadHatter's user avatar
  • 481
0 votes
1 answer
2k views

Preseed Ubuntu18 partition doesn't work UEFI

I am setting up dual boot, Windows and Ubuntu 18.04, for our computer labs (more than 40 computers). We successfully set this up with an auto installer before. We re-image the machines with MDT and ...
nullface's user avatar
1 vote
1 answer
8k views

How to restore Ubuntu GNU GRUB screen? [duplicate]

I installed Ubuntu 18.04.1 LTS on my system along with Windows 10 as dual boot. The Ubuntu worked fine for few days, but last day there there were some updates in UBUNTU which I allowed to download ...
kyotoYukimora's user avatar
0 votes
0 answers
899 views

Can't install any Linux distro on my laptop

I am unable to use any Linux distro on my laptop. when I try to install any Linux distro I get a black screen. and I can't boot with try without installing mode. When I choose to try without ...
Syzio's user avatar
  • 11
0 votes
1 answer
2k views

How to uninstall Ubuntu from Legacy mode? [duplicate]

I'm trying to dual boot Ubuntu 18.04 with Windows 10 on my Lenovo laptop, but have run into some problems :) Specifically, my problems seem to come from choosing UEFI or Legacy as the Bootmode in the ...
prateek singh shekhawat's user avatar
1 vote
2 answers
271 views

How do I get my Ubuntu install (in dual boot) to boot using UEFI?

I installed Xubuntu on my PC to set up a Windows VM with gpu pass-through for games. I checked to see if my PC is using uefi with /sys/firmware/efi. The folder is missing so I tried to use sudo apt ...
tyler's user avatar
  • 11
7 votes
2 answers
3k views

How can I prevent grub updates from resetting my EFI bootorder

I'm using Clover as my first and default bootloader. If Ubuntu is selected there, then Grub is activated (AFAIK there is no way to skip this step, I don't really use Grub at all, so I might as well ...
Daniel Schreij's user avatar
0 votes
1 answer
1k views

Was my bios updated? Scary two minutes with black screen, system beeps and total unresponsiveness

I'm on Ubuntu 18.04 with my Lenovo Thinkpad T460s. After an update a couple of weeks ago I did a reboot and I saw something which included the word "EFI" in the top left corner of my screen. Then ...
Christian's user avatar
  • 1,729
2 votes
2 answers
9k views

Install Windows 10 alongside Ubuntu 18.04

I'm trying to install Windows 10 alongside Ubuntu 18.04 because I want to try some games on my laptop, and then go back to Ubuntu. I have two USB Flash Drives, one with Windows 10 and the other with ...
sticsk's user avatar
  • 1,551
0 votes
1 answer
459 views

Surface Book Wubi Ubuntu 18.04 - Failed with grub boot loader configuration

I just used wubi to install Ubuntu 18.04 on my Surface Book that uses UEFI. During the installation, it said grub failed to installed. Then after I restart, I can no longer log back into Windows. I'm ...
hittop's user avatar
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1 vote
1 answer
8k views

How to install Ubuntu 16.04 or 18.04 on Dell XPS

I am trying to install Ubuntu 16.04 or 18.04 on a Dell XPS 15 9560. For that I downloaded the desktop ISO and used dd to put it on a USB drive. When booting the laptop I use F10 to select to boot from ...
Socrates's user avatar
  • 2,473
0 votes
1 answer
6k views

system bootOrder not found on Lenovo T540

Upgraded my Ubuntu (with dual boot Windows) to 18.04 . After restart I got "System BootOrder not found. Initializing defaults." . Changing the BIOS bootorder to Windows as 1st works, of course, but i ...
Joost Koopman's user avatar
0 votes
0 answers
93 views

No boot device on dell laptop running ubuntu 14.04 after power loss

RI had a no boot device black screen after switching my laptop back on after several weeks. Following dell support instructions I went to the Bios menu (tapping the F2 key during the initial boot ...
marie's user avatar
  • 21
0 votes
0 answers
1k views

BIOS-loop after installing Ubuntu 18.04

I've recently installed Ubuntu 18.04 via Live USB but when I reboot the computer to complete the installation, this message appeared: After Clicking OK this other window appears: Rebooting the ...
Akane Yoshinega's user avatar
0 votes
2 answers
3k views

GRUB menu doesn't show Windows 10 in dual boot with Ubuntu (on separate drives) [duplicate]

I've searched around and not found anything quite like the issue I'm having. I have Windows 10 on an NVME drive and I want to install Ubuntu to a second SSD on the same system. I tried earlier and ...
Sudo's user avatar
  • 11
1 vote
0 answers
3k views

Failed to load image \EFI\ubuntu\grubefi: Volume Corrupt

Everything was working fine until today when I didn't get GNU GRUB and it automatically took me to Windows. I checked many articles and followed this one https://itsfoss.com/no-grub-windows-linux/ ...
Mobin Malik's user avatar
1 vote
1 answer
21k views

Should I enable "OS Optimized Defaults" in UEFI when dual booting Windows and Ubuntu?

I want to use Windows 10 (64bit) and Ubuntu 18 with dual-boot on my Thinkpad X380 Yoga. (This is my first move into the direction of linux and the first time I am installing an OS by myself) First ...
Jakob's user avatar
  • 121
0 votes
0 answers
44 views

Toggling Ubuntu bootable USB stick to toggle between UEFI and non UEFI?

I would like the ability to test store PCs for Ubuntu compatibility by booting them up with an Ubuntu 16.04 bootable USB memory stick. It is unknown (to me) if all or most new desktops are UEFI ...
gatorback's user avatar
  • 5,755
6 votes
2 answers
11k views

update-grub command has no effect

After installing a Kubuntu on a second hard drive, it changed the boot order of my main hard drive GRUB and I can't change it back since. Any change to the grub configuration file (/etc/default/grub) ...
uben's user avatar
  • 201
0 votes
1 answer
342 views

UEFI and booting from USB

I would like to make a trip to Costco and verify that a desktop can boot from 16.04 & 18.04 before purchasing the machine. Although a link is provide to the target PC, I expect that there may be ...
gatorback's user avatar
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0 votes
0 answers
1k views

How do I install rEFInd themes?

So, im pretty new to linux as I need to start using it next year in school. I dual booted my laptop and I wanted a boot manager (not grub) so I could switch elegantly between Windows and Ubuntu. But I ...
Niek Scholten's user avatar
6 votes
1 answer
11k views

Problem Loading UEFI:db X.509 certificate (-65)

file name: ubuntu-18.04.1-desktop-amd64.iso. currently windows 8.1 installed on my laptop. I am trying to install ubuntu from usb flash drive and created a bootable usb using rufus. When I boot from ...
Sami Hilal's user avatar
1 vote
1 answer
16k views

Failed 18.04.1 installation - The 'grub-efi-amd64-signed' package failed to install [duplicate]

The ' grub-efi-amd64-signed' package failed to install into / target/. Without the GRUB boot loader, the installed system will not boot. This is the error I get every time I try to install 18.04. I ...
user227495's user avatar
  • 4,069
1 vote
0 answers
76 views

Grub: cant boot Ubuntu HDD

I have a dual boot, W10 and Ubuntu 16.04. Each OS is installed on a HDD. Very often, when I quit Ubuntu or update W10, my GRUB partition is erased and I have to use boot-repair to make things back ...
ramsey_lewis's user avatar
1 vote
1 answer
1k views

ubuntu 18.04.1 with Windows 10 dual boot - 'grub-efi-amd64-signed' error hell?

I have Windows 10 and I am trying to install ubuntu 18.04.1 with no success. Here is my system info: HP Envy x360 Laptop with SSD (with GPT) I have 100 MB EFI System parition (installed with Windows ...
Dany's user avatar
  • 11
0 votes
1 answer
570 views

Grub installation keeps failing 18.04

i am having a clean install of Ubuntu 18.04 on a new HP laptop. I tried several distributions before ubuntu like manjaro,mint and opensuse and i only managed to boot live ubuntu,mint and opensuse ...
kampias's user avatar
  • 141
4 votes
2 answers
11k views

How to take a serial port connection via USB online?

I'd like be able to establish a connection to a headless Ubuntu 18.04 server from a Ubuntu 18.04 laptop via serial console in order to avoid having a graphic card consuming energy in the server. The ...
Kalle Richter's user avatar
1 vote
0 answers
44 views

Forcing Ubuntu 16.04 installation UEFI mode

I have an unattended Ubuntu 16.04 installation that i created using this guide The installation works great, however it is installing to BIOS MBR and I'd like it use UEFI instead What component/...
Mosh Yaz's user avatar
1 vote
0 answers
7k views

"Couldn't get UEFI db list " bug after the second opening Ubuntu

I am trying to migrate Wİndows to Ubuntu.I have prepared bootable USB with rufus. I restarted my laptop and went to the setup page, setting my USB drive as main boot option and disabling all other ...
my-lord's user avatar
  • 140
0 votes
0 answers
351 views

Black screen with scrambled dialog appears at startup

Every time I start my laptop, the image shown appears on the screen. If I press enter then the GRUB screen appears. Everything else is working fine. Can anyone tell me how to avoid seeing the ...
Deepak Joshi's user avatar
0 votes
2 answers
1k views

Problem with Windows Boot Manager/BIOS in dual boot

PC model- Lenovo Ideapad 300 OS- Windows 10 dual booted with Ubuntu 18.04 I am not able to start windows or view grub menu or see Lenovo logo(which was visible earlier) after one fine day I put my ...
NITISH BAHL's user avatar
3 votes
1 answer
2k views

Ubuntu external SSD not booting on my desktop, but works on my laptop

I've installed Ubuntu 18.04 successfully onto an external Samsung T5 SSD and it works well with my laptop (ASUS UX303UB: https://www.asus.com/Laptops/ASUS-ZenBook-UX303UB/ ). However, when I try to ...
Eddiefin's user avatar
14 votes
2 answers
71k views

Install Ubuntu 18.04 desktop with RAID 1 and LVM on machine with UEFI BIOS

I have a machine with UEFI BIOS. I want to install Ubuntu 18.04, desktop version with RAID 1 (and LVM) so my system will continue to work even if one of the drives fail. I haven't found a HOWTO of how ...
Niclas Börlin's user avatar
1 vote
1 answer
1k views

Installation of Ubuntu 18.04 on an Acer with UEFI - grub installation doesn't work

I'm trying to install Ubuntu 18.04 on an Acer Aspire ES15 with UEFI. Originally, it was delivered with Windows 10, but now I don't want to use them at all. The intention is to have only Linux here ...
TomG's user avatar
  • 11
2 votes
1 answer
615 views

Ubuntu 18.04/16.04 boot problem

I have a problem booting into Ubuntu 18.04. Before this I had Ubuntu 16.04, then I installed Ubuntu 18.04 and got this error. Failed to open \EFI\BOOT\mmx64.efi - Not Found Failed to load image \EFI\...
Георгий Гусев's user avatar
0 votes
1 answer
77 views

Dual boot issue on separate drives

My desktop has a NVMe drive and a HDD. I installed Win10 on the NVMe and tried installing Ubuntu 18.04 on the HDD. In the Ubuntu installer I could see Win10 installed on NVMe as /sda, so I installed ...
sr-js's user avatar
  • 1
1 vote
0 answers
358 views

Multiboot-Ubuntu with Encryption (UEFI)

I want to install three Ubuntus on one system with encryption on UEFI. How should my partition table look? This is now my partition table: (Click image to enlarge) I want to edit this to a UEFI ...
Fabs 's user avatar
  • 41
2 votes
0 answers
51 views

Long boot time due to loader [duplicate]

My system is taking way too long to boot up since I installed ubuntu. I have a dual boot with windows 10 on a reasonably fast notebook. After selecting the OS on the grub menu, it goes to a purple ...
Pedro Freitas's user avatar
1 vote
1 answer
17k views

Selecting Windows Boot Manager in startup UEFI menu GRUB instead

I had dual booted my Dell Inspiron 7560 with Windows 10 and Ubuntu 18.04 . During a recent service from Dell the Windows 10 was reinstalled. The windows installation is in a 128 GB SSD. The same ...
shreyase99's user avatar
1 vote
0 answers
726 views

UEFI boot fails after Ubuntu 18.04 kernel update

Did a apt dist-update on Ubuntu 18.04 couple of days ago. The system is stuck on grub prompt since then. Have attempted to resolve this by booting into Ubuntu Live DVD, mounting and chroot'ing into ...
Rumbone's user avatar
  • 11
0 votes
1 answer
1k views

Kernel panic after installing dual boot with Windows 10

I recently received a new work laptop (HP Elitebook) with Windows 10 installed. I want to install a Ubuntu distribution on a separate partition, and since it's my first time doing this on UEFI and ...
kviiri's user avatar
  • 101
1 vote
0 answers
345 views

windows10 dual boot showing black screen-UEFI

I have installed Lubuntu18.04. I can see both ubuntu and windows option in grub. Ubuntu is getting started fine. However, when I am selecting windows 10- it's showing a window image, then after a few ...
Jadu Sen's user avatar
  • 111
0 votes
1 answer
122 views

installing Ubuntu from Live USB

env: Ubuntu 18.04, mini-ITX custom build on ASUS X470 Motherboard, M2 Samsung 970 SSD. No Windows, this system is Linux only This is a bit embarrassing. As far as I can tell, when we tried the ...
JL Peyret's user avatar
  • 101
1 vote
1 answer
122 views

Can not change external Ubuntu to UEFI

I have Ubuntu installed in an external device (GPT) in Legacy mode. I could run this Ubuntu in my old Windows 7 laptop. Now I have changed to a Windows 10 laptop in UEFI mode and I can't run ubuntu ...
lsmor's user avatar
  • 113
0 votes
0 answers
4k views

Setting up boot/efi in fstab

I'll try to be brief on the backstory. I recently bought a really cheap slim notebook,came with a low power celeron, 4gb ram and a 32gb eMMC drive, it also features a 500GB internal Sata HDD I added ...
ForsakenLive's user avatar
3 votes
1 answer
4k views

Can't boot into Live USB, though secure boot has been disabled

The installation is being carried out alongside Windows 10. UEFI is enabled Secure boot is disabled Live USB works fine on other PCs The UBUNTU Iso checksum has been verified too Fast boot and ...
Manas Singh's user avatar
0 votes
0 answers
285 views

Unable to load Windows 10 after selecting from GRUB menu

OK so i know this will be marked as duplicate because it looks very similar to many other issues people have had. Hear me out: I installed Ubuntu alongside Windows 10, after a bit of troubleshooting ...
Adam Cole's user avatar
2 votes
1 answer
8k views

"efibootmgr: Could not set variable Boot0000: No such file or directory" and "efibootmgr: Could not prepare boot variable: No such file or directory"

grub-efi-amd64-signed installing for x86_64-efi platform occasionally (~1 out of 20 tests) fails to create the Boot0000 record with the following errors "efibootmgr: Could not set variable ...
Simon Fogliato's user avatar
0 votes
1 answer
191 views

recover deleted uefi partition grub 2

I have deleted my UEFI partition, because I thought it prevent me to make dual booting system...:) So now I know, that was my fault. I want to recover my uefi partition. I have created 512MB partiton ...
J. Doe's user avatar
  • 1
2 votes
0 answers
1k views

Ubuntu 18.04.1 LTS - Unable to boot into Windows from Grub menu

I have successfully installed Ubuntu 18.04.1 LTS. When I start the system I'm shown the Grub Menu. When I select Windows it throws a "Boot Configuration data for your PC is missing or contains errors" ...
WiredTheories's user avatar

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