Questions tagged [grub]

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

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Dual-boot Linux and PrimeOS, no options in Grub

my old laptop is weak with Windows and I wanted to install some lightweight OS but encountered a problem when wanted two of them. I have Linux partitioned like this - /dev/sda: /boot - primary (Grub ...
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Dual booting from different drives

I have Windows (10) installed on drive C:\ and Manjaro installed on drive E:. When booting to Manjaro via grub it works just fine, but when I try to boot back to Windows I get this error: error: no ...
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Dual boot Win10/ParrotOS - Can't stop booting to grub recovery after update

Updated ParrotOS (dual booted with Win10) via parrot-update and landed in grub recovery after reboot (don't know why but that's another problem for another day). All was working fine for ages up ...
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Removed /etc folder how do I keep my data after booting

I accidently removed the whole /etc folder (rm -f /etc) please don't ask why I was in a rush. Then I panicked and restarted my computer. Now all I have is GRUB. Is there a way to recover my data? I'm ...
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1answer
379 views

Rename EFI boot entry

I did some tests with efibootmgr to rename the default ubuntu boot entry. I can create a new entry that boots my ubuntu with: sudo efibootmgr --create --disk /dev/sda --part 1 --label "Precise - ...
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Kernel Panic, can't boot into Linux after re-installing grub… is this because of a kernel mismatch?

tldr I dual boot Mint 20 and Windows 10. EFI boot partition got corrupted so reformatted and re-installed Windows bootloader and grub. Windows works fine, grub menu displays, but can't boot into Mint ...
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After inserting m2 ssd only grub is starting but not Linux (Ubuntu)

I have Ubuntu(20.xx) on a 250gb ssd and MS-Windows on another 250gb ssd. As soon as I insert a 1tb m2 ssd in the motherboard (which had previously ubuntu 18.xx installed), ubuntu would not start, only ...
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Kubuntu update-grub not updating UEFI

I can't figure out why the command sudo update-grub does not update my menu. The system is UEFI. The menu is never changed. This used to work fine until I booted into Ubuntu (sd5). I am thinking it ...
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1answer
46 views

Not able to boot to live USB from GRUB menu and there is also no recovery option

I made a clean install of PopOS on my Lenovo Z580 using a live usb. The live usb was flashed using Balena etcher from Xubuntu that was installed previously on the same machine. Since then, I do not ...
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multi-core linux workstation recognizes only 1 cpu, 1 core, 1 thread

I'm using ubuntu 20.04 on Dell Precision 7820. $ uname -a Linux myhost 5.4.0-56-generic #62-Ubuntu SMP Mon Nov 23 19:20:19 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Only one cpu is used/known by the OS,...
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GRUB error after installing package

So I was following jays arch Linux installation tutorial on youtube, and after I installed the GRUB package, when I try to install GRUB, it gives me an error, here is a screenshot of that error! ...
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How to fix two GRUBs due to multiple Linux installations and invalid boot entries

Up until yesterday I was using Arch for the best part of the year, but I decided to try Open Suse Tumbleweed because it seems to be more stable and organized. I installed it using an USB stick and on ...
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143 views

How to fix a syntax error in Grub?

I want to update my grub settings. I get the following message # grub-mkconfig -o /boot/grub/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-linux Found initrd image: /...
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154 views

Syntax error in grub.cfg on update-grub

I run Ubuntu 20.04 and have this error when I do an update-grub command: root@ubuntu:/# update-grub Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/init-select.cfg' Création du ...
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1answer
673 views

Mirroring EFI System Partition (ESP) on Ubuntu

When setting up a RAID-1 Ubuntu system (i.e. where / and /boot are on RAID-1 mirrors) it's unclear to me what Ubuntu's answer is to making the EFI System Partition (ESP, i.e. /boot/efi) redundant, as ...
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Installing Fedora 33 on Oryx Pro and regenerating grub.conf caused boot issues

I have a shiny System76 Oryx Pro 6 with Pop_OS 20.10 on it. I have a second drive I wanted to dual boot on using Fedora. Well, after installing Fedora 33 Workstation on the second drive, it because ...
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Cannot boot from grub / initramfs to desktop in linux mint

Recently I had to download some files for my uni coursework on Docker. I think they were temporarily installed on /var/ and I had to create some syslinks to enable me to have the space to install it. ...
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Grub2 not loading Boot Menu after restoring from a macrium image

I have a Dual boot with windows 10 and restored Debian 10 (Buster) image from Macrium. Problem is the Grub2 Boot Menu is not loading now as it did previously. I used Macrium to repair Windows 10 boot,...
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Is it possible to replace the Windows boot manager with GRUB without having Linux installed?

It's pretty much all in the header. I'm about to get a new PC and I'm planning on installing Windows on it, but I would like to know if it would be possible to get GRUB on there without a dual-boot. ...
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Q. Is there a way to use compatibility mode with persistant storage on a live usb?

Preface: I've been trying to make a live linux usb (with persistent storage) for my job. I intend to use it on a laptop (provided by my employer) which is kinda okay-ish but have very low RAM (a ...
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1answer
89 views

Grub Not Seeing Usb Drive

I want to hack around with booting from removable media, but ran into some problems. On one laptop, an HP Notebook - 17-by0062st, I am unable to get grub to even recognize a USB stick present in a ...
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56 views

Moving to CentOS 7 from UBUNTU dual boot with Windows 10

I currently have a Dual boot OS (Ubuntu 18.04 and Windows 10). Due to the software I have to work on, I need to migrate to CentOS 7. Is there any guide to migrate without corrupting the Windows 10 ...
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37 views

How do I remove the GNU GRUB screen?

I have a laptop with Win 10 and I had a spare external SSD, so I burned Ubuntu.iso into a USB-Drive and installed Ubuntu in my SSD. So far so good. When I have my SSD connected and power on my laptop ...
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42 views

Dual Boot not working

I had Windows 10 installed on my computer, I shrunk the partition it was installed on then installed linux on the new partition. Now when I turn on my computer I see GRUB and the only option is my ...
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144 views

Ubuntu stuck at boot at after 20.04 update

Anyone can tell me what is really happening here! Ubuntu Boot has been stuck here from 1 hour! I updated Ubuntu 18 to 20.04 and after updating Ubuntu got stuck at boot you can see on Image! Nothing ...
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2answers
2k views

Ubuntu will no longer boot after upgrade from 20.04 to 20.10

Thanks in advance for the help. I have a Dell Precision 7540 that has Ubuntu 20.10 installed (previously 20.04). It is a pretty normal installation with a single physical nvme disk, with separate ...
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33 views

Double Boot problem - Can't remove Minimal Bash

I'm quite lost here, but I would say this is a problem where the boot manager is not installed in the right place. This started when I re-installed ubuntu after it crashed and couldn't re boot it. My ...
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48 views

Switch primary graphics card at GRUB?

The motherboard I'm using has integrated graphics and due to a firmware bug, the UEFI shell ("BIOS Setup") screen will only show if the the onboard graphics card is used. If a PCIe card is ...
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21 views

Cannot reinstall grub [duplicate]

EDIT: Installed the grub on the MBR and that resolved the issue: sudo grub-install /dev/sdb The issue was that I've initially installed grub on the partition and not on the MBR itself. Each time I ...
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29 views

archlinux keeps going on grub rescue after windows 10 update

I updated windows 10, then after a reboot I got stuck in a grub rescue "loop" and by loop I mean that I tried a lot of things to fix it but I still get these errors: After typing sudo update-...
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1answer
2k views

Kali Linux Virtual Box 5.8.0 stuck on loading screen

As the title suggests, everytime I try to boot into Kali Linux with 5.8.0 Kernel I get stuck at the loading screen (the dragon) However, using the 5.7.0 Kernel seems to be no problem. At first I ...
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2answers
184 views

Grub unable to boot installation windows installation, error: cannot load image

I sort of have a specific problem. I am new to dual booting, this being my second time. I accidentally installed and upgrade to my manjaro kernel which had rt at the end, which caused a lot of errors ...
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57 views

When there's no grub, how to change gpu kernal parameters?

I currently use dual AMD R9 gpus. However, I recently was forced to upgrade motherboards and to the next version of my linux distro. My old motherboard was BIOS based, and my new one is UEFI based. ...
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1answer
74 views

Zfs file system with two roots that can be selected at boot

I have Ubuntu 20.10 on zfs root (upgraded from 20.04) I tried to restore 20.04 using zsys features at boot, which was unsuccessful. I have a backup (created using syncoid). Using zfs send/receive. I ...
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1answer
212 views

windows not booting due to grub4dos

I am a high school student and was installing Linux for study related stuffs along with windows. When installed it was not showing option to boot so i fixed with EasyBCD in which added a new boot ...
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1answer
123 views

Locked out: overwrote /etc/shadow and /etc/grub.d with pacnew

After all these years of using Linux, I have never goofed up this badly. I should have known better, I honestly don't know what I was thinking. While trying to fix a small error message I was getting (...
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1answer
53 views

Grub errors after installation Elementary OS alongside windows

I installed Elementary OS alongside Windows 10 on the one logical partition / and elf partition. But when I reboot pc, I see grub rescue shell. I tried to type this commands: set root=(hd0,msdos7) set ...
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1answer
18 views

Cannot log into Debian 8 account

I have a Lenovo ThinkPad X41 and I installed Debian 8 three years ago. Since I haven't used it lately, I forgot the password of my user account. Is there any way to recover it? I've tried to log in as ...
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102 views

Grub stops at command prompt after cold start (dual-boot)

I've installed Ubutunu 20.04 at my second disk beside Windows 10 at the first disk. On a restart/reboot grub shows the normal menu. But on a cold/power-off start grub stops at command prompt. :( Only ...
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1answer
152 views

How do you achieve stable rEFInd or grub multiboot for Windows MacOS and Linux with multiple drives?

I have a 250GB SSD (sda) with Windows 10 on NTFS. A second 1TB SSD (sdb) has MacOS 10.15.7 using apfs, and Linux Mint 20 using btrfs and two spare partitions using ext4. I have installed rEFInd and ...
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11 views

Update-grub linux installation problem

The update-grub part came during the ubuntu installation phase and it has been installed for about 7 hours and continues to be installed. I wonder how can I skip this part in the installation phase?
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1answer
207 views

Unable to hide GRUB - Linux Mint 20 Cinnamon

I am using Linux Mint 20 Cinnamon and I am trying to hide the GRUB menu. I have also Windows 10 installed. According to the official GRUB documentation, if the GRUB_TIMEOUT_STYLE is set to hidden the ...
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2answers
35 views

Can multiple lvm2 volumes in a single volume group be bootable root volumes?

Or, perhap equivalently, can a bootable root volume be named other than "root"? While installing a new version of a Linux IS I created an lvm2 logical volume named "ub20-root" ...
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52 views

Grub menu does not include Elementary OS option

This machine is a generic modern AMD64 laptop with Intel Core i7, UEFI, and internal NVMe storage. I have installed Elementary OS with a bootable USB flash drive (burned from the ISO) on my portable ...
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55 views

Grub error I think but I don't know what it is

OK let me start form the beginning I Installed Linux Mint along side with windows 10. Linux mint got slow the same day tried to delete it by going to windows and deleting Linux partition (I know it ...
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164 views

“Executing 'grub-install /dev/sda/' failed” and “Minimal BASH-like line editing is supported”

First, I installed Linux Mint alongside Windows 10. Linux Mint got slow the same day and I tried to delete it by going to Windows and deleting Linux partition. (I know it was a dumb thing to do.) I ...
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23 views

How to boot into Windows from live Ubuntu

I used to dual boot Linux and Windows 10, but then I deleted the partition that contains Linux and Grub, and when rebooting my computer I was faced with the grub rescue prompt. Now I have booted into ...
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25 views

Deleted Unix and Grub partitions - can't boot into Windows anymore

I get prompted with the grub rescue. The partition holding windows is intact. I also have access to another computer and a USB stick. Can I boot into Windows without losing my data?
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30 views

Setup GRUB after windows installed in dual boot

I used to have both windows and Linux on my laptop, for some reasons I have deleted the windows partition and I had to install windows back into it. My problem is how to have Grub back to select my ...
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62 views

Grub's default kernel priority

I recently installed Arch on one of my machines. I installed grub in UEFI mode. While setting up Arch, I had installed linux-lts. I used it for some days, and later decided to use both LTS and regular ...

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