Questions tagged [grub2]

GRUB2 is the second revision of the GRand Unified Bootloader, with versions numbered 1.9x and 2.yz.

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How to extend Linux partititon dual booted with Windows? And how to rebuild Grub after extending the partition?

I have dual booted Linux(Kali Linux) and Windows, Due to of shortage storage in Linux ,I want to shrink the Windows partition and extend Linux partition I know there are many posts regarding this, I ...
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grub2 error disk 'hd0,msdos1' not found, ls shows no disk

I have googled a lot for this problem. I found this, but it didn't solve my problem. Other solutions suggest me to reinstall grub (run grub-install), which didn't work either. Here is what I am doing:...
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GRUB2 Loading into CLI on reboot instead of bootloader

I recently did a fresh install of Pop!_os after getting a little brave and wrecking some stuff on accident. I dual boot Windows 10 and Pop on separate drives. Upon restart, GRUB loads into its grub>...
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4answers
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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 ...
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2answers
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GRUB Error: grub-install: error: failed to get canonical path of `/cow'

Getting this error while downloading grub. ubuntu@ubuntu:/boot/grub$ sudo grub-install /dev/sda Installing for i386-pc platform. grub-install: error: failed to get canonical path of `/cow'.
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How to convert grub config to use kernel device names instead of UUID

I've got a bunch of identical systems on which I want to clone the same openSUSE 12.3 installation. I've set up clonezilla on PXE server. After appling the disk-image of on another machine, it fails ...
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1answer
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GRUB error: unknown filesystem

I am trying to setup lvm on luks2 with boot inside lvm. NAME FSTYPE FSVER FSAVAIL FSUSE% MOUNTPOINT nvme0n1 ├─nvme0n1p1 vfat FAT32 510.7M 0% ...
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1answer
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How can repair grub after installing Windows 10?

I have made many experiments,found interesting fact: step1: install debian-buster No EFI partition setup during installation in this step. step2: install windows 10 At this time,grub menu lost,boot ...
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1answer
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How to remove old UEFI boot entry?

Every time my computer boots, I face this GNU GRUB menu: I don't know how to remove it and every time I boot, I have to write exit and then I have to choose the debian entry manually. I've looked ...
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Fixing EFI partition and cloning installation to another drive

This is the situation: I've had a flawless experience with Windows 10/Pop!_OS 20.04 dual booting for a couple of years until yesterday when I booted into Windows, installed a game and when I tried to ...
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2answers
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Cannot install Linux because keyboard/mouse not working

EDIT: I should mention that my mouse and keyboard are wireless devices. I assume that doesn't matter since a Live version of Windows 7 had no problems with it, and the most basic part of my system (...
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1answer
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Grub has assumed control of my multi-boot, what do I need to learn to take it back?

Even after many years, I'm still an 'arms-length' user of linux. I switched to Mint when XP stopped, use the default configuration, and have not had to interact with Grub before. I use it to get the ...
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When dual booting with Windows, should I switch GRUB or UEFI priorities?

I am reconfiguring my dual boot system, and learning more about UEFI leads me to wonder whether I have been doing things properly. Right now my UEFI priorities are set to boot GRUB, and if I want to ...
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1answer
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Fedora 33 not booting into latest kernel

Not the best picture (sorry), but every now and again whenever Fedora does an update, it appears to be adding a new line to my boot menu - the picture is old, I now have 3 versions of the kernal in ...
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1answer
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Elementary OS installation failure

I've been trying for a few hours now and I still cannot find out why I cannot install Elementary OS. Every time I try to install it I get: the 'grub-efi' package failed to install into /target/ I ...
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6answers
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grub2-install Error: modinfo.sh Missing - Common solutions attempted

I know this is a pretty common problem, but I've tried a bunch of common answers (enumerated below) to no avail. Basic setup: I'm setting up a Fedora 31 / Ubuntu 18.04 dual-boot, each with a ...
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1answer
476 views

enabling check_signatures in GRUB

I'm trying to create a new image of GRUB which has an embedded public key file to validate all files loaded by GRUB. So I used the command grub-mkimage to manually create a new GRUB core image. grub-...
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2answers
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Dual booting Debian and Windows 8?

My problem is a little weird (maybe to me only). Specification: Lenovo, Ideapad Z510. i7 intel core. 1920x1080. ISO: GNOME Debian 7.2.0 amd64. Bootable Device: Universal USB Installer. ---Process ...
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1answer
64 views

Install Grub to USB drive with installed Linux distros inside

I'm trying to make a usb drive with two linux distros installed inside. The idea is to carry the usb drive with me and boot the distros in the computer available at the place where I am at that moment....
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update-grub caused non-booting configuration

I ran update-grub and after this, the system will not boot. It gets stuck in a blank screen. Possible before GRUB, possibly in GRUB that just shows a blank screen. I would normally get a text menu ...
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Should a parameter like 'audit_backlog_limit', present in the '/boot/grub2/grub.cfg', be among the 'kernelopts' in the /boot/grub2/grubenv?

While looking over a SUSE Linux Enterprise Server hardening baseline, I noticed that there's a rule checking if the value of audit_backlog_limit is sufficient. checking The way used to check if the ...
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3answers
5k views

Grub stuck loading kernel

I recently installed an SSD and have been trying to install Debian on it. For a few reasons it has been difficult on this machine; at the moment I've installed everything but it is failing to boot. ...
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1answer
53 views

How does grub-install / grub boot exactly work?

Trying to make an USB with full installed Linux distros, I've landed on a bunch of pages (like this: How can I repair grub? (How to get Ubuntu back after installing Windows?)) explaining how to ...
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1answer
238 views

How to set the default prefix for grub (EFI)?

I have had four hard days with trying to install OpenZFS 2.0.0 on a vanilla debian buster and to boot from it. To make a long story short, OpenZFS 2.0.0 runs, and buster boots from it, but only with a ...
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it is Impossible for me to install ubuntu or generally most linux distros on Asus zenbook14 um433iq

I've got a big problem, I can't install ubuntu and some Ubuntu-based Linux distro but Pop Os on my laptop. Let me illustrate the problem, I've tried elementary os, ubuntu, Feren os, KDE neon, Zorin os,...
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4answers
6k views

grub2 using wrong /boot partition

I recently installed Ubuntu 18.04 from a USB. I did everything the same way I'd done when upgrading from 14 to 16, and 16 to 17, and it worked every time until now. I selected "erase ubuntu 17 and ...
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Is there any cleanup procedure for incorrectly located GRUB installation?

I'm running Debian Buster and after a GRUB upgrade I started receiving error stating that: The GRUB boot loader was previously installed to a disk that is no longer present, or whose unique ...
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1answer
178 views

Set default boot entry to Windows instead of Fedora

I have the following options on my machine in Grub when I boot it up: Fedora (5.10.21-200.fc33.x86_64) 33 (Workstation Edition) Fedora (5.10.19-200.fc33.x86_64) 33 (Workstation Edition) Fefora (5.8.15-...
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1answer
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how to resume GRUB2 upgrade apparently blocked by /boot filesystem type=ext2?

details As detailed here, the /boot on this Debian Jessie had filesystem type=ext2 $ mount | grep -e '^/dev/' /dev/sda3 on /boot type ext2 ... ... and was unable to upgrade its GRUB2 $ sudo apt-...
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Make grub let me me choose the new kernel

there's somethings I don't understand with kernel installed packages. Sometimes I have all the kernel packages installed in a "basic version" and its upgraded version. Let's say : 4.18.0-240....
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1answer
40 views

Dual Boot install failure of Debian 11/Win 10 on UEFI only (Dell Inspiron 17 7706) system

I tried to install a root-encypted Debian 11 (Bullseye, netinst, daily build 2021-03-29, cryptsetup) next to the existing Win 10 as Dual boot on a strict UEFI-only system (Dell Inspiron 17 7706, BIOS ...
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1answer
6k views

How to boot linux kernel from network through GRUB2 console?

My test hw, on which I want to boot, is MinnowBoard Max Turbot which is an x86 machine with UEFI and so far, I have successfully built GRUB2 from source and it successfully boots kernel from USB. ...
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2answers
2k views

Is it Safe to Transfer SSD to Another Computer?

I am going on a trip (bus) and I will not be bringing my computer. However, I would like the comfort of my Linux operating system the way I like it, with my programs and files. I was wondering if it ...
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1answer
2k views

Grub won't boot from GPT RAID (gave up waiting for root device)

I'm having problems with booting a Debian 8 system on which I migrated the root partition from a single hard drive to a RAID1 (mdraid). On every boot, I get the following grub error: Gave up waiting ...
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1answer
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Boot Linux from ISO Image inside Windows 7 Partion

I have a Windows 7 Laptop from a friend where he wants me to install Linux for him to try. The MBR partition table is already full, so there is no option to add another partition and install Linux ...
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61k views

not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

I had Windows 10 and Manjaro on my laptop and everything was OK. Last day, I've installed Kali Linux in another partition. It has installed correctly and it works fine. But the problem is when I want ...
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init unable to find root device on computer in restoration

I'm a bit out of solution on this one : I am restoring an old computer (15 years old...), which was running archlinux. I have inadvertently erased the pacman package database (and all /var ...), and I ...
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My 40_custom doesn't work

Hello and thanks for coming help me My 40_custom is as follows : #!/bin/sh exec tail -n +3 $0 menuentry "Kali Linux custom configuration" { search --set=root --label Kali --hint hd0,...
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Adding an if condition inside the grub configuration file

By default when I have only one kernel, the output of ls /boot/ | wc -l is 13. However, sometimes I want to compile and install another kernel to my system and after that I want the grub menu to pop ...
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1answer
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How can I get Windows to let me always boot straight into grub

I dualboot Ubuntu and Windows and have 2 SSD's. The first one, 1TB is dedicated to Windows and the other, 500GB is for Ubuntu. I had it setup to boot into Grub but every time Windows would upgrade or ...
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1answer
2k views

Debian 9 VmWare Black Screen after reboot

I have installed a debian 9 x86 on a VmWare Workstation, and used it few times, then i have been messing with NetBeans and also gnutls library, i was trying to build static one to use in my program, ...
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Error attempting renistall Grub2 bootloader from Opensuse Leap 15.2 Rescue Console

Following a recent problematic patch my Opensuse Leap 15.2 system stalled during boot, then landed me at the grub prompt. So I booted to the rescue console and attempted to chroot to reinstall the ...
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2answers
87 views

I had two grubs but not anymore, and I want both back

I have Ubuntu Linux 20.04 and Kali 2021 installed, and before reinstalling both, I had two grubs, the main one showed up when I started the pc, it was the Ubuntu one, and the second one showing up ...
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1answer
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System keeps booting into Grub2

My system keeps booting into the Grub2 Command Line interface on startup. I used to run Windows 10 and Ubuntu on Dual Boot, and after I updated my Windows 10 to Windows Server 2019, on every startup, ...
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1answer
1k views

GRUB 2 scripting: convert device name in GRUB notation into a Linux device name

I'm trying to use partition labels (or UUIDs, that does not matter) to select root partition without use of an initrd/initramfs. With initramfs, this is fairly easy: root=LABEL=... or root=/dev/disk/...
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47k views

How can I prevent Windows from overwriting GRUB when using a dual-boot machine

I've been reading a lot about dual-booting, and it seems as easy as loading Windows and then loading Linux with GRUB, but everybody says that Windows loves to trash GRUB when it gets the opportunity. ...
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1answer
1k 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 ...
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2answers
2k views

How to replace Ubuntu with Arch on a dual boot?

I want to replace Ubuntu Linux on my current set up. Currently I have a dual boot with Ubuntu Mate and Windows 10. I would like replace the Ubuntu installation with Arch. But before I do so I was ...
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1answer
49 views

Grub starts in command line after BIOS update and can't boot any OS

my problem is very similar to this question asked by Antoine Aubry. I have an ASUS laptop with Windows 10 and Ubuntu 20.04.2 LTS installed in dual boot. After a recent BIOS update, when I start my ...
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No GRUB entry after installation of manjaro-architect

I have used the XFCE live cd, to launch into manjaro-architect, not the standalone ISO. I am planning to dual boot with windows, but now I have only one SSD plugged in, and aside the firmware having ...

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