Questions tagged [uefi]

Questions about the Unified Extensible Firmware Interface (UEFI), the software interface aiming to replace typical BIOSes. This tag may also be used for questions related to UEFI partitions and systems.

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6
votes
1answer
10k views

Timed out waiting for device dev-disk-by\x2duuid-C829\x2dC4C1.device

I had formatted efi partition and installed windows again. I have dual boot Windows and Linux, then I installed the grub bootloader again from a live usb using these commands: mount /dev/sda* /mnt ...
2
votes
0answers
131 views

how is the boot directory of the EFI/ESP partition related to the boot directory of the root partition?

are the files inside these 2 directories mirror images of each other? how are they related? for example the below command that i execute: sudo cp -a initramfs-4.18.16-300.fc29.x86_64.img /boot/EFI/...
0
votes
2answers
394 views

Recovering linux boot entries in a UEFI dual boot setting

I have recently upgraded my MSI GS63VR-6RF with a 32 GB RAM. Upon upgrade, I noticed that the system automatically boots to my windows 10 partition instead of the typical systemd-boot screen where I ...
6
votes
3answers
2k views

GPU passthrough works with UEFI firmware but not Windows iso

I am trying to set up a virtual machine with passthrough graphics. I am able to get the passthrough working for the UEFI shell, but not the official Windows installer. I can get the Windows installer ...
0
votes
1answer
461 views

Clonezilla clone linux partition MBR based and restore to UEFI based system

I have a xubuntu partition on my actual laptop with MBR and grub for dual boot windows and Linux. I'm trying to clone the xubuntu partition and restore into a new laptop that is UEFI based. In the ...
4
votes
0answers
39 views

uefi bootloaders for distributions

I have stared reading about uefi recently and got to know that SYSLINUX and GRUB2 have their own uefi bootloader. i have few confusions specially in terms of pxe boot. 1) Are distributions use their ...
3
votes
2answers
6k views

Why can my custom-build iso not boot in EFI?

I am building a custom iso using xorriso in mkisofs mode. The build seems correct, inspecting the iso afterwards shows 2 boot images (1 BIOS, 2 UEFI), yet booting to the ISO from qemu using the OVMF ...
-1
votes
1answer
637 views

Debian 9 and UEFI

I have installed Debian Stretch (9.6) on UEFI-based platform Everything went fine, but I cannot... boot to the system. After the GRUB2 starts the image all I get is: Loading Linux 4.9.0-8-amd64 ...
0
votes
1answer
297 views

grub2 no such device (Win10 / Fedora)

I have Win10 installed on a nvme drive. I have installed Fedora 29 on another ssd with LVM. When grub boots, it shows Fedora & Windows 10 on the list, as it should. But starting with Windows ...
1
vote
1answer
113 views

Multiple Linux Installation - managing shared ESP and Bootable options

I have installed Manjaro alongside BlackArch. BlackArch has its bootloader in /boot which is a separate partition. Manjaro has three partitions, one for root(/), one for /boot, and one for /boot/efi. ...
3
votes
1answer
81 views

Dual boot ignores EFI devices

My pc does not boot anymore in EFI/UEFI mode. I had grub installed and was able to boot on both Windows 10 and Ubuntu Linux (14.04 LTS). I recently tried to install Fedora Workstation 29 '...
0
votes
0answers
350 views

boot/grub/efi.img invalid image size

I am attempting to create a custom Ubuntu 16.04 LTS Server installation media and have been following the instruction here https://help.ubuntu.com/community/InstallCDCustomization When I attempt to ...
1
vote
1answer
286 views

Determining EFI text modes supported by notebook

I am using a Lenovo Ideapad 100S IBR 14'' in FreeBSD 12.0 I need to setup a different EFI text mode, to change the screen resolution upon boot. As in this question Using native 1366 x 768 resolution ...
0
votes
1answer
113 views

My (slightly) customised Slax 9.4 distro doesn't load properly

Even though I have USB Storage set as the default boot item in my Surface UEFI, I cannot seem to boot from my USB. I have tried swiping left on the USB Storage option to immediately boot, but that ...
1
vote
1answer
887 views

Debian ESP Partition

I am trying to install debain 9 and have a question about partitioning. I install Debian via uefi and use software RAID which distributes my root filesystem and swap partitions to my hard disks. ...
0
votes
0answers
782 views

Parted: Creating partitions on a drive for EUFI boot, fat16 doesn't mount properly or show up on firmware as boot option

I have a library (referred to here as "wic") that generates a drive.img file that contains multiple partitions, including a boot partition with a UFI exe. If I dd if=drive.img of=/dev/sdb, it works ...
1
vote
1answer
474 views

Build Archiso with proper UEFI SecureBoot signing

I'm building an Archiso live USB. My goal is to make it SecureBoot compatible (users with SecureBoot enabled should be able to boot it). It seems like this has been asked before (How to boot Arch ...
0
votes
1answer
425 views

How to install GRUB with dualboot in Legacy mode?

I have a problem with my laptop, I have Windows 10 and Parrot Home OS (a Debian based OS) in other partition, yesterday when I installed Parrot, the installer noticed me that the only thing that ...
1
vote
1answer
343 views

erratic grub behaviour. Reinstall linux on dual boot!

I had Ubuntu and Windows 10 dual boot, working perfectly fine. Due to slow performance of Ubuntu on my machine, I wanted to replace it with Elementary OS, while maintaining the dual boot. I fired up ...
0
votes
1answer
514 views

UEFI install ubuntu on usb drive

I have laptop MSI GP70 and I am able to boot installation from first USB stick and install it on second USB stick, then when I want to boot installed system from second USB drive I am unable to do so, ...
0
votes
1answer
995 views

System skips grub and loads to Windows (UEFI)

It's the first time that I install Linux (Debian testing) on a computer with UEFI and not BIOS. I've installed Windows first and then Debian (like I always did), but system keeps booting straight into ...
3
votes
1answer
61 views

Clone Debian installation

I want to clone an existing Debian installation and restore on a new machine with a hard drive of different size. The partioning is very easy - /dev/sda1 for EFI, /dev/sda2 for Linux and /dev/sda3 ...
0
votes
2answers
1k views

No boot option after Linux Mint installation (dual boot)

I recently installed Linux Mint 19 onto my Dell XPS 15 laptop with Windows 10 pre-installed. The initial install of Mint seemed to go fine. I booted off of a live USB and installed Mint onto a ...
-1
votes
1answer
103 views

How can I mount a partition before the OS has booted?

In the instructions for configuring an EFI system partition in Arch Linux, it reads as follows: mount ESP to /boot. This is the preferred method when directly booting a EFISTUB kernel from UEFI. ...
3
votes
0answers
166 views

FreeBSD 11.2: how to resize the boot options menu on a UEFI/GPT/ZFS machine?

Is there a way to resize the boot options menu in Freebsd 11.2 on a UEFI/GPT/ZFS machine (zfs-on-root)? On multiple machines, the installation resulted in the boot options menu being rendered in a ...
0
votes
0answers
135 views

UEFI Stub booting not working

I am trying to boot Arch Linux via an EFI Stub. I created an EFI partition (formatted as FAT32), a swap partition and a main partition on which I installed the Arch Linux core package group. I then ...
0
votes
1answer
53 views

Swapping hard drives results in being unable to boot

I have a laptop that I installed Arch on, so far so good. After getting things set up just the way I wanted them and using it for a few days, I decided to experiment a little and install SteamOS. ...
4
votes
1answer
6k views

Boot Linux Mint from USB in Legacy Mode

I have an Asus-X550LD with Windows 7 installed, and for the past few hours I have been unsuccessfully trying to install Linux Mint on my machine in order to create a dual boot system. I wrote the ...
1
vote
2answers
3k views

How do I get GRUB2 to correctly start under UEFI?

I have installed GRUB on my Arch Linux installation on /dev/sdb1. /dev/sdb is my second internal hard drive on which I installed Arch Linux, /dev/sda is my first internal hard drive and has Windows 10 ...
2
votes
2answers
10k views

UEFI - Linux Mint Boot from USB Doesn't work

I'm running Linux Mint (only OS other than in VirtualBox) and wanting to remove it. I've created a Live USB of Windows 8 using Windows 7 USB/DVD Download Tool - Yes, I know it says Windows 7 but I've ...
0
votes
1answer
740 views

Stuck installing Arch Linux. How should I proceed?

I am following a tutorial here. I'm on step 2.2. I'm supposed to find out if I have a uefi motherboard by sending the command efivar -l. But I don't get the expected output. Instead I get efivar: ...
6
votes
1answer
2k views

EFI boot to Linux on a MacBook Pro

8,3 MacBook Pro 2011, running Ubuntu 11.10 amd64. Here's the situation. Screen backlight and a few other things only work if booting in EFI, so I need to boot Ubuntu in EFI to get things working. ...
1
vote
1answer
641 views

Linux / Windows: Dual boot Installation on RAID0 [closed]

I need to install a Linux distribution on my laptop (an Asus UX302LA) but I couldn't even begin the installation. To explain you my problem, I know that Windows is installed in UEFI mode. ...
0
votes
1answer
873 views

What is causing my EFI partition to become corrupt when booting CentOS after installation?

I am attempting to install the latest CentOS 7.5 x64 on small form factor PC ASUS Eee Box EB1037. It is an Intel Celeron J1900 (Bay Trail) with an onboard NVIDIA GeForce GT 820M. The installtion media ...
0
votes
2answers
1k views

Can't install Fedora 29 on Thinkpad W550s due to GPT

I have a Lenovo Thinkpad W550s that already has Windows 7 on it. I would like to install Fedora 29 Workstation alongside Windows 7, but I have run into some problems. The hard drive was formatted ...
5
votes
2answers
10k views

Is it possible to use Grub to run an EFI binary?

On an efi system it it possible to run arbitrary efi binaries. Especially I can use the efi shell (one efi binary) to run grub (another efi binary). Is it also possible to use grub to run for ...
8
votes
3answers
4k views

Is there a way to enable secure boot in Linux?

Just like Windows has secure boot that prevents any external OS Loader code from running at boot, does Linux have any similar option for itself? I have looked around, but when I search, the only ...
0
votes
2answers
324 views

EFI can't to boot Linux

I have bought a HP Probook x360 11 G1 EE laptop with an EFI boot and Windows preinstalled. The first problem is that there's no option in the bios to support legacy boot, so I can't do without EFI. ...
0
votes
1answer
194 views

Accessing UEFI hardware info from Linux

I want to get info about hardware through UEFI. I know, I can get the efi variables and make dump using fwts tool in Linux. Also, I know about "device" command for EFI shell, which will show me all ...
21
votes
4answers
65k views

How to boot EFI kernel using QEMU (kvm)?

I'm trying to emulate a EFI environment using QEMU (kmv); virtualbox takes 15 minutes to boot in EFI mode using archboot. Using legacy BIOS mode, I can boot using this command: root@citsnmaiko-deb:/...
1
vote
1answer
603 views

Convert a Ubuntu BIOS install to EFI/UEFI in USB stick

I have a linux installation (full installation not live) in a USB stick. When I set it up it uses BIOS to boot but now I need to change it to UEFI because some newer machines only boot in UEFI. I ...
0
votes
2answers
1k views

GRUB disappeared from Boot Menu after UEFI (BIOS) upgrade on Thinkpad X1 Carbon gen5

I have dual boot system with Windows 10 and Arch linux (with grub) installed on Thinkpad X1 Carbon gen5. I've updated BIOS from version 1.22 to 1.34. Before Update I had several options in Boot Menu ...
0
votes
1answer
477 views

How to install Ubuntu on ASUS F556U, JournalError error? [closed]

I'm trying to install Ubuntu 18.04 on my ASUS F556U laptop without success. I already asked other questions on the subject, thinking that the problems were by UEFI mode. Well surpassed that, I already ...
0
votes
1answer
18 views

Two separate disks, no grub displayed but boots straight to Windows

I have a laptop that contains two SSD disks. Legacy mode is completely disabled in BIOS, so I'm most likely using UEFI only. The bigger disk was used to install a fresh copy of Windows. I then used ...
3
votes
2answers
20k views

GRUB menu doesn't appear after Ubuntu install alongside with Windows 10

I shrunk Windows partition, freed 100 Gb, installed Ubuntu into it, installed GRUB into into MBS of the first drive and after reboot I got Windows and with no any option to select. Even in BIOS in ...
0
votes
2answers
2k views

Debian UEFI Boot with DELL Latitude 7490 “No bootable devices found”

I have tried to install Debian 9.5 on a DELL Latitude 7490 with UEFI, but when I try to boot the machine I get the infamous "No bootable devices found". EFI partition has been created, and I can see ...
-1
votes
2answers
2k views

new kali installation (EFI), I can't start on kali OS without the “super grub 2” usb key

I got a new computer. This computer works before with a multi boot (ubuntu OS, kali OS and windows OS). I wanted to erase all datas for install only a Kali linux OS (no multi boot, just only Kali). ...
2
votes
1answer
4k views

Can't load zfs kernel module on Fedora with Secure Boot - “Required key not available”

I'd like to use zfs with my Fedora 20 system. I've installed the ZFS on Linux Fedora repository and subsequently the kernel-devel and zfs package. As far as I can tell, everything was installed ...
0
votes
2answers
316 views

UEFI cannot boot Debian install on external USB without nvram entry

I have installed Debian Stretch onto an external USB drive that I plan to use as a portable installation that I can use on multiple computers, so I need to be able to boot it from the USB directly ...
1
vote
3answers
3k views

grub2 gone every time I boot Windows 10

I installed Windows 7 on an SSD and upgraded it to Windows 10. Then I installed Linux mint 17.2 Cinnamon and had the following partitions: The boot menu was showing Linux Mint and Windows 10 and I ...