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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Arch Linux Live USB no longer booting UEFI

My Lenovo laptop is running Arch Linux with a UEFI GPT partition table. One day I powered up my laptop, but couldn't get passed the Lenovo boot screen. I used a USB stick to boot up and reinstall Arch....
1 vote
3 answers
1k views

How do I start a Windows 10 partition on a MBR partitioned disk on a system that otherwise uses GPT/UEFI GRUB?

Okay, let me explain. This is a UEFI computer. It has two disks. The primary disk is partitioned with GPT and boots via GRUB2 to an Arch Linux partition. The secondary disk is partitioned with MBR and ...
0 votes
1 answer
18 views

Grub2 is not using kernel grubby provides me. grub.cfg problem?

I am using the linux surface kernel on Fedora 39, which I want to use as the default kernel grub2 selects on startup. It got set up as default kernel before and it worked, but then I changed grub ...
4 votes
7 answers
77k views

Kali Linux is Installed but not showing in boot manager

I recently bought a new laptop: Lenovo IdeaPad 320e Intel i5 7200 2.5 GHz processor 8 GB RAM 2 GB Nvidia 940mx graphics 1 TB HDD It came with FreeDOS, so I installed Windows 10 on it on EFI mode.  A ...
0 votes
1 answer
9 views

correct path for arch linux system /boot/ - x64 laptop uefi machine, GPT partion table

after a rebuild from arch live usb iso, my boot directory is: The tree is correct? Or there is a mistake? I know that the system boot up correctly so I should not modify anything, but i need to ...
0 votes
1 answer
34 views

How do I enable UEFI secure boot for a linux build made with yocto?

I'm producing a yocto build, and want to enable UEFI Secure Boot on the intel machine I'm using. This is a pretty basic yocto build, using core-image-minimal and meta-intel. The artifacts it ...
0 votes
1 answer
39 views

Create UEFI/BIOS chip dump from within Linux

Some people recommend using flashrom to create backup dump of a PC's UEFI/BIOS SPI flash contents. However, flashrom does not work with all platforms. Sometimes people recommend finding the address ...
0 votes
1 answer
2k views

edit grub to have multi boot option to have more than 2 OS boot option

How do we edit grub in a UEFI HDD to have multi boot option having more than just one linux one Windows OS, readily being selected and run at PC startup
3 votes
1 answer
142 views

syslinux UEFI boot: automatically select boot option based on HW identifier

I am booting from USB media, and I am using syslinux EFI boot. I am booting the same media on 2 different laptops, and I have 2 menu options in syslinux.cfg, one for each laptop. Currently, I have to ...
0 votes
0 answers
14 views

Create, update, modify, and delete UEFI authenticated variables from userspace in Linux

I've been searching for, but cannot find any information or utilities for creating, deleting, modifying, and updating arbitrary authenticated variables in Linux from userspace. Sure, there are tools ...
0 votes
0 answers
99 views

I can't Install any Linux Distro on new AMD Ryzen 7 5700U Mini PC

I'm trying to install Proxmox on a new Mini PC (GMKteck NucBox M5 Pro Mini PC) but keep getting the following error : EFI boot mode detected, mounting efivars filesystem mount: /sys/firmware/efi/...
1 vote
1 answer
34 views

How can I manually install a Yocto image?

I'm having difficulties installing an image I've built with Yocto. In the past I've always used u-boot, MBR, and legacy boot. Installing Yocto meant creating boot and rootfs partitions, installing the ...
0 votes
2 answers
3k views

Zorin OS, can't boot from USB

I recently installed Zorin OS on my Lenovo Yoga 2. I completely got rid of Windows and am not dual booting. I am now trying to get back to Windows 10. I created a Windows 10 USB drive, but I can't ...
2 votes
1 answer
2k 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. ...
2 votes
2 answers
5k views

Debian installation hangs at final GRUB install: "Looking for other operating systems"

I used Rufus to burn Debian 9.2 NetInstall ISO to a USB. No matter what options I choose on Rufus, I always run into the same problem when installing Debian. When it gets to installing GRUB, it hangs ...
0 votes
1 answer
2k views

How to delete all partitions without using an operating system

How to delete all partitions from my system using only the GNU Grub Terminal and BIOS
0 votes
0 answers
20 views

Question about what Timeshift restores with UEFI system and BTRFS filesystem

I am curious how Timeshift restores will work with my system configuration which includes UEFI and a BTRFS formatted system partition. First, here's some information about how my system is organized: ...
0 votes
1 answer
67 views

Update NVRAM so that shimx64.efi is run instead of grubx64.efi on Debian system for secure boot

I want to configure my Debian to boot with secure boot enabled but it doesn't and here is why... OS specific boot loaders are stored on the ESP partition which is mounted in /boot/efi Debian system ...
0 votes
1 answer
27 views

Trying to dual boot Windows 2016 and Centos 7 - won't boot if drive set to UEFI

Motherboard: SuperMicro X11SCA-F, BIOS v2.2 I installed Windows 2016 on a 2TB nvme drive, which booted and worked as I'd expect. I then installed CentOS 7.9 in the spare partition, then rebooted. It ...
1 vote
2 answers
2k views

UEFI Grub not finding config file

I need to boot Windows and two other Linux distors using Grub. So, I have installed Grub on UEFI partition with a dedicated partition for storing the files used by Grub using the following command. ...
0 votes
1 answer
2k views

Boot tiny core linux in uefi mode

I was trying to tweak Core linux to boot in uefi mode, but it's only working in legacy mode and i don't really know how to start with it, i tried copying efi from ubuntu server install but i just ...
0 votes
1 answer
34 views

Convert MBR/BIOS to GPT/UEFI (infodump)

I wanted to upgrade my 1.5TB HDD to a 4TB SSD, none of the internet resources I found correctly matched my situation from beginning to end, and I ended up spending about 20 hours getting it to work, ...
1 vote
2 answers
2k views

Kernel Panic after repartitioning disk with gparted

I have a Dell Inspiron 5523, which has two drives. One is an HDD (call it sda) and one an SSD (call it sdb). My system is dual boot UEFI with a large part of it being Windows 8 (around 332GB) and a ...
0 votes
0 answers
62 views

Why Atom Z2760 won't boot live GNU/Linux

I'm trying to install any GNU/Linux distribution (Debian, Archlinux, Ubuntu...) on Acer Iconia Tab W510, with 32bits UEFI and Atom Z2760 processor. After preparing the ISO with correct EFI files (as ...
2 votes
2 answers
2k views

What are all these other in grub options and which are safe to remove?

I recently uninstalled Ubuntu 16.04 and installed Peppermint 7 instead,I had a few problems with grub not showing but fixed it by running bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi in admin ...
1 vote
1 answer
74 views

Multiboot Windows 10 and Linux, Windows not seen, EFI problems

After crash of an old HD disk, I bought a new SSD and would like to setup multiboot Windows 10 & Linux but I run into UEFI problems. My disks: /dev/sda is the new SSD. Linux Mint 21.3 is on /dev/...
1 vote
2 answers
2k views

Installing 32-bit Linux distribution on 32-bit Architecture with 32-bit UEFI

There's a lot of information on installing 64-bit Linux on 32-bit UEFI. It's a mess even here, but I've seen ways (rEFInd, etc). But this laptop (HP Envy X2) has a 32-bit architecture and exclusively ...
0 votes
1 answer
214 views

"error: /boot/vmlinuz-6.6.9-amd64 has invalid signature" with secure boot on in Kali Linux

When I try to run my Kali Linux system with secure boot on, GRUB returns error: /boot/vmlinuz-6.6.9-amd64 has invalid signature. I don't want to turn off secure boot. I have followed the directions ...
1 vote
1 answer
2k views

Failed to Install Grub. Fatal Error

So, earlier I had Windows 7 on my laptop. I deleted all the Partitions and I think deleted the efi paritition too(which maybe shouldn't be deleted?). I boot into LM on my Live Disk and automatically ...
0 votes
1 answer
37 views

Change from /boot/efi to non boot/efi

I have a Debian server A with given partition from lsblk and Debian server B with root partition. I would like to convert server A same as server B. Basically I don't want the server A with /boot/efi ...
3 votes
4 answers
6k views

Dual booting Ubuntu and Windows 8. w8 boots through grub shell, but not from menu

I have a laptop, with installations of Ubuntu 12.10, and Windows 8. Windows 8 was first installed on the system, and Ubuntu was installed afterwards. During the Ubuntu installation, the installer ...
1 vote
2 answers
2k views

how to repair uefi boot option

I somehow erased all the boot options in my bios (maybe caused by some operation using super-grub disk). I have tried to fix my grub using boot-repair live-usb. After performing recommended repair and ...
1 vote
1 answer
216 views

How do I boot from an NVMe disk without bios support?

I have a system which I want to boot from an NVMe disk (via a PCIe riser). The system is UEFI capable, I can boot from a USB disk and install the OS (TrueNAS Scale) to the NVMe disk, and the OS shows ...
0 votes
0 answers
62 views

Booting Existing Linux Installation in qemu VM

There are 2 separate arch installations on my machine, one on an nvme drive and another on /dev/sda (EFI in /dev/sda1 and root in /dev/sda2). Trying to boot the arch on /dev/sda from inside the arch ...
0 votes
1 answer
54 views

Flash drive with ISO not seen in BIOS or not booting at all

I've got a problem. I cannot install any OS and I don't know why. I as usually copied artix linux iso to my flash drive to install it on server. Then in BIOS settings, drive didn't appear till I ...
3 votes
2 answers
6k views

Why does Ubuntu install continue to fail with 'grub-install /dev/sda failed' error?

Goal: I am trying to install Ubuntu onto a Dell XPS 8900. Problem: I can't get through an Ubuntu install without the install interrupting with Unable to install Grub in /dev/sda, Executing 'grub-...
0 votes
3 answers
4k views

Mounting efi disk on external USB

Recently I bought new sshd to replace my old one on my notebook, but I have problem. I installed Ubuntu 15.10 on new one and put the old on usb case I have, but the disk on USB doesnt have partition (...
0 votes
1 answer
2k views

Adding Windows Boot Manager to GRUB2

I have an SSD and I am using windows 10. I recently installed Arch and I configured my SSD in a way that it has 2 EFI System partion. One for GRUB2 and another for windows boot manager.My system boots ...
5 votes
2 answers
3k views

Updating kernel versions when booting from rEFInd

I'm booting from EFI using the awesome rEFInd bootloader. I've so far had to configure boot myself by manually copying over my EFI-compatible linux boot image to my EFI partition and writing a ...
0 votes
0 answers
80 views

dpkg error grub-efi-amd64-signed

I am currently facing a perplexing issue while attempting to install DragonOS on VMWare, and despite several efforts, I have been unable to resolve the error outlined below. I have performed a fresh ...
0 votes
3 answers
2k views

Can't boot into a usb drive

On my windows 10 system I can't boot into a parrot os gpt formatted pendrive. I used rufus to format it. Whenever i choose the pendrive from boot menu i get the grub command line. Then i tried ...
3 votes
1 answer
5k views

How to fix/reinstall grub from debian media, e.g. rescue mode?

How can one invoke grub-install from the debian netinst image? Or, does one need the live cd. (Situation: two disks: one degraded btrfs raid 1, another a blank disk I can install a new OS on, but ...
0 votes
1 answer
4k views

Grub2 starts in commanline after restart and can't find /boot or /grub

Note: read question before marking it as duplicate. It is different. I would't find answer to the question anywhere. I have windows 10 preloaded and dual booted it with ubuntu 18.04. I needed to ...
0 votes
2 answers
2k views

Wondering how to correctly configure rEFInd for Windows and Arch dualboot

I am currently considering moving to UEFI/GPT on my system. I plan to install Windows first and use the ESP created by Windows. My first major question is this: Will Windows automatically use the GPT ...
0 votes
1 answer
5k views

mkfs.vfat command not found

I was trying to run the command while installing Arch Linux pacman -S grub efibootmgr But, I forgot to format EFI(dev/sda5). So, I run following command mkfs.vfat /dev/sda5 I am getting that mkfs....
1 vote
1 answer
2k views

EFI Boot list and EFI Boot Manager timeout setting not working

How can I change the 'timeout' setting of the EFI boot manager? I am trying to dual-boot Windows 8 and Ubuntu and I would like to be able to choose one or the other OS at my machine boot time. I ...
0 votes
1 answer
3k views

Dual Boot broken after Pop!_OS Install

I've installed a new Linux Distro (Pop!_OS) and it seems like my Windows install is currently unreachable. I've tried many things stated online and nothing seems to be working. Here's the output I see ...
1 vote
3 answers
8k views

GRUB does not load in Windows10+Linux with UEFI

I have a new computer that comes with UEFI but I'm unable to use Windows 10 and Linux in dual boot, after installation of Linux+GRUB and reboot it loads Windows without showing GRUB, notice that first ...
2 votes
3 answers
5k views

Deleted the Windows EFI partition, What to do?

I installed Pop-OS in a dual-boot system. Previously, my EFI partition was around 250mb. Pop Installer told me that it was too small. So instead of resizing and moving (due to possibility of data loss ...
4 votes
1 answer
403 views

How to pass extra options to OpenBSD's EFI boot loader with systemd-boot?

I have an extra systemd-boot entry for OpenBSD. $ cat /boot/loader/entries/bsd.conf title OpenBSD efi /extra/bootx64.efi It works and I manage to get into boot shell, The problem is that by default ...

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