Questions tagged [grub]

This tag is ambiguous: use grub2 or grub-legacy as appropriate.

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PXE boot on UEFI clients and client-dependent configuration file

Everybody seems to be using GRUB to boot UEFI machines via PXE from the network. While it works, it lacks an important feature to be able to direct certain known clients right away. GRUB just requests ...
Nikita Kipriyanov's user avatar
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Windows won't show up on the grub after I dual boot with kali

When I installed the kali linux with dual boot, the windows dual boot wont show on the grub. It was just an Run kali linux and Advance options. I tried already many possible solutions in the internet ...
Serella's user avatar
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Rebooting into Ubuntu without using BIOS settings

I have a remote PC(connected through team viewer) setup with Ubuntu 22 and Windows 11, the boot priority is set to boot into windows. Currently I am booted into Ubuntu 22, due a CUDA issue I have to ...
Navaneetha Krishnan's user avatar
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Installing tree installed grub - is it something to worry about?

I just installed tree via sudo apt-get install tree and my terminal suddenly decided to update grub. Last week, I installed tree, and a similar thing happened. However, when I restarted my PC later ...
Yimeca's user avatar
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Boot a kernel of debian installer with expert mode

I want to reinstall my VPS with the debian's official repository, instead of with the image provided by the VPS operator(I don't trust the VPS operator). On original system I installed debian-...
Leon's user avatar
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Windows 10 disk not found when trying to boot from Grub

I just installed Bliss OS 16 on my laptop. I can boot to Bliss OS just fine but when I tried booting to Windows it gave the me Error: disk 'hdWindows' not found instead. During GRUB2 installation a ...
Polaris144's user avatar
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grub2: which /boot/efi/EFI/*/grub.cfg does it read?

I have a dualboot linux, fedora and almalinux. After installing almalinux, I couldn't see the fedora's kernel versions, just multiple entries of Fedora. Most of the links I found are wrong. https://...
None's user avatar
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Moving /boot, how to update grub to find new location /boot/grub2/i386-pc/{core,boot}.img

Grub2 systems hard-code the location of stage2 files. This info is stored in the bootloader partition. I understand that grub-install will write this and more. My question is how does grub2-install ...
Steve H's user avatar
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Physical memory addressing and Hugepage allocation on Linux/GRUB with x86 asymmetrical memory channels

Let’s say you have a modern AMD/Intel x86 machine with 2 DRAM DIMMs, configured as asymmetrical dual channel. One of them is 16GB and the other 48GB. In this case, I want to forbid general usage of ...
hurryman2212's user avatar
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How to boot UEFI windows from BIOS GRUB?

I have one disc partitioned in GPT mode by Windows 10 with whatever sadly Windows 10 installation created there. /dev/sda1 2048 206847 204800 100M EFI System /dev/sda2 206848 ...
KamilCuk's user avatar
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Recover windows 10 installation, grub does not detect it, unsafe state upon mounting

I'm pretty sure I did something 1-2 months ago that borked my windows installation (I forgot what it was), now I can't boot into it, the partition is still there and I can see my files. But I can only ...
Liso's user avatar
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Grub menu not visible on TV (but working)

My question is similar to this one: GRUB Menu Not Visible To summarize, GRUB seems to be working in so far that it times-out after the expected 10s I set, and starts the expected default OS, but I can'...
PiRK's user avatar
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My instance is not booting and only shows “System setup” on the console connection

I'm using Oracle's Free Tier with Oracle Linux as my VPS. A couple of days ago, I tried to install some apps and the system is down. When I connect to the console connection, It's something like this: ...
John Doe's user avatar
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When I turn on the computer ( or restart ) the screen turns on and off three times before booting grub. How to stop this behaviour?

OS: Arch Linux x86_64 Host: 81Y3 IdeaPad L3 15IML05 Kernel: 6.8.1-arch1-1 ~ λ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sr0 11:0 1 1024M 0 rom nvme0n1 259:0 0 476....
white-hat-er's user avatar
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Change GRUB2 menu entry

I'm attempting to change the name of an existing entry in the GRUB2 menu from "Red Hat Enterprise Linux blah blah blah" to "My Linux Distro" (or anything!) but no matter what I do, ...
lmnopq1234's user avatar
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Reading content of non-mounted filesystems

I want to read the content of not mounted filesystems. This works fine with grub-fstest /dev/sdba1 ls /. But this does not work, if the partition is mounted: grub-fstest /dev/sdba1 ls / grub-fstest: ...
guettli's user avatar
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Fix boot partition & boot loader for Fedora 39

I ran dnf upgrade --refresh nd it told me that there's not enough room on my /boot partition to apply it so I pulled up a guide with Google to extend the /boot partition which went something like (I ...
stdcerr's user avatar
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Can I use whatever method GRUB uses to interact with keyboard inside the main system?

This question is effectively a follow-up to this one (to which I haven't got a satisfactory answer, also look there for the list of things I tried to fix the keyboard problem). My new laptop has a ...
Daigaku no Baku's user avatar
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Archlinux does not boot from sda2

Due to the lack of space on the EFI partition in sda1 (128 MB), I was forced to configure an existing Archlinux system with EFI (/boot) on sda2. The reconfiguration process from USB (pacstrap, arch-...
Nellinux's user avatar
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GRUB starts in grub> command line after reboot

After converting a physical Ubuntu_18.04 machine into a virtual one (ESXi under vCenter control), I encountered the following window appearing when booting. After I enter the “exit” command, the ...
Nikolay T's user avatar
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Customising Grub for Windows with Ubuntu 23 installed

I've been trying to add a grub menu item for Windows 10 on my system. I've successfully added an entry by creating a custom menu entry but each time it fails to work - with an error that /efi/EFI/...
Ray's user avatar
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os-prober finds nixos, but it doesn't appear in grub menu

If I run update-grub it sees all the OSes on my machine (Mint, Windows (work), Windows (games) and NixOs): ➜ ~ sudo update-grub Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/...
stib's user avatar
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Clone a Linux partition to a new SSD and keep both partitions in GRUB

I have the following disks and partitions: sda 8:0 0 238,5G 0 disk ├─sda1 8:1 0 16M 0 part ├─sda2 8:2 0 174,5G 0 part ├─sda3 8:3 0 529M 0 part └─sda4 8:4 0 63,...
Tiamin's user avatar
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How to erase or disable boot info from drives

I have a computer with 5 hard drives, but when I stop the BIOS to look at my choices, it has 14 choices for booting (Including a DVD, but let's ignore that). These are choices in BIOS, not in GRUB -- ...
ForDummies's user avatar
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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 ...
Conjuror4735's user avatar
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1 answer
273 views

Problems with Installing Nobara along with Windows 10

I already have a Windows 10 Pro installed and want to install Nobara in a dual boot such that I can access either whenever I want to. I downloaded the "Nobara-39-Official-2024-01-24.iso" ...
Dev Not Taken's user avatar
2 votes
2 answers
59 views

Does GRUB 2.12 now support detached headers?

In GRUB's project status update, at FOSDEM 2022, they talked about adding detached headers support in GRUB 2.12 (for decryption) : Add cryptodisk detached headers and key files support, Denis 'GNUtoo'...
ChennyStar's user avatar
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Boot Linux into RAM from ISO file on hard drive and do a clean Linux reinstallation

I have the following case: A Ubuntu 14.04 installation should be upgraded to version 22.04. The hard drive needs to be repartitioned and the old 14.04 installation should be wiped completely. Ubuntu ...
scmarko's user avatar
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2 answers
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bootloader is stuck at "select cd-rom type"

I am running Ubuntu 18.04 on a 2006 iMac with 3GB RAM and Core2Duo processor. I want to upgrade to Ubuntu 20.04.6 but was informed that I needed to do a fresh install. So I created a bootable CD using ...
ChrisL's user avatar
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Fixing bootloader

Grub no longer shows up in the boot list. The only thing which shows up is the Windows boot manager. Only Windows boot manager is listed when running the efibootmgr command. The thing is, the grub ...
randomguy4809's user avatar
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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: ...
greyseal96's user avatar
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Grub terminal, cannot boot on my installed fedora or windows

I had windows 11 on my pc and tried to install fedora as a dual boot from a bootable key. I selected automatic partitioning and toggle the disk encription on, and give a password. I rebooted and ...
Hedwin Bonnavaud's user avatar
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1 answer
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ESP and GRUB instalation

The aim is to install Debian using debootstrap. First I want to install all system on a small 32GB flash disk. And concepts of GPT partition tables and GRUB is quite clear: There is a table of ...
Dmitry Dmitriev's user avatar
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I've been stuck on the bootloader after installing once again (using openSUSE Leap 15.5), but got a different result

Well, to begin, I'm wanting to run openSUSE Leap 15.5 with the Server role on a HPE Microserver Gen8 using the RAID controller B120i that's embedded, and an Intel Xeon E3-1220Lv2. When first ...
Javontae's user avatar
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1 answer
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How to set isolation core in grub.cfg?

When I set up isolation CPU2 in my customized Linux system's grub.cfg, but after restarting, I found that there were still many user space processes using CPU2 (such as sshd) using top. What is the ...
Vimer's user avatar
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Arch linux (grub) not booting

I installed Arch Linux using chroot from USB and removed Windows 11 completely. No errors occurred while installing, but after choosing Arch Linux to boot, when entering correct password it does not ...
Rohan Desai's user avatar
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1 answer
31 views

Grub wont boot windows after install

I have a machine where I just installed Endeavour in its own disk. I’ve configured OS probe to allow the detection and addition of windows to grub but despite the system being found it cannot boot. ...
vfbsilva's user avatar
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2 votes
1 answer
207 views

grub "out of memory" error due to too many disks?

I'm runnnig Debian Stable (Debian 12, Bookworm) on a new Dell PowerEdge R760xd2 server with 24 disks and 256 GByte of RAM. The initial installation (including a reboot into the newly installed OS) ...
C-Otto's user avatar
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Grub menu is not showed after installing arch linux

I'm trying to install Arch Linux for the first time in dual boot with Windows, but faced with the small problem. I'm trying to setup GRUB but when I start the PC, Windows loads without the GRUB menu ...
Cross's user avatar
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install dual boot grub on separate drives?

I have a windows box and then installed linux on a 2nd drive. To boot each one, I have to go into the bios to change boot drive. I would expected grub-install for drive2 to have detected windows on ...
xpusostomos's user avatar
1 vote
2 answers
156 views

Deleted EFI system partition

Deleted my EFI system partition by accident. Dual boot system with Linux Mint and Windows, but I wanted to remove windows. After deleting the windows partition I meant to delete the windows boot ...
Capistro's user avatar
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130 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 ...
Apis's user avatar
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Migrated from AMD to Intel and grub doesn't boot Linux

I have Linux Mint 21.2 installed on an NVMe M.2 SSD. I migrated from a Ryzen 5 3600X to an Intel Core i9-14900K CPU and motherboard, and now grub welcomes me with the following screen: GNU GRUB ...
László Monda's user avatar
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1 answer
75 views

Grub not appearing

When I turn on the PC the GRUB screen doesn't display and goes directly to any OS (which is configured on the F2 boot start list) and when I tried to find the /etc/default/grub file it's missing there....
theEarlyRiser's user avatar
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When i installed Debian grub wasn't installed

While installing Debian 12 my power went out, so now I can no longer boot. Unfortunately, I do not have a USB drive and I had been installing things by placing the initrd and vmlinux onto the drive ...
sam's user avatar
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1 answer
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Cannot update kernel on AlmaLinux 8.9

I want to update kernel on AlmaLinux 8.9 because cifs is not working and it complains about OS version. mount.cifs [...] mount error: cifs filesystem not supported by the system Current kernel seems ...
adrianTNT's user avatar
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How do I get XanMod kernels to show in up in grub boot menu on Debian 12?

I have installed the XanMod kernel sources list, per the directions on the XanMod site, on Debian 12 and then installed the latest XanMod kernel. I have also installed the grub-emu utility and when I ...
trollybus's user avatar
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1 answer
33 views

Deleted LUKS Disk

I had a dual-boot laptop setup with an encrypted BIOS. I then removed my Manjaro installation and deleted all of the partitions, including the Manjaro partition, which included my LUKS disk. When I ...
user avatar
-1 votes
1 answer
67 views

Debian Dual Boot GRUB not showing properly

I've recently installed Ubuntu 22.04 + Kali and I've followed all the steps from Kali's doc for setting up dual boot. The thing is, after many reinstallations I'm still having the same problem. What I'...
Rico Catford's user avatar
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75 views

How to fix TimeShift not restoring due to fstab sshfs files

I tried to update my nvidia drivers via the pop shop and it went wrong. Now I would like to restore my system with TimeShift. Pop OS does not use GRUB so when selecting restore I went to "...
NicoFish's user avatar

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