Questions tagged [grub]

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

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Install grub on a disk drive by UUID

On Arch Linux I am trying to do the following: grub-install /dev/sda Instead of /dev/sda to do with UUID. However two points to bring up: I cannot find UUID for /dev/sda only for /dev/sda1 or /dev/...
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Grub not visible, after installing Ubuntu 19.10 alongside Windows 10

I installed Ubuntu 19.10 alongside Windows 10. I installed it on another disk and i created another partition for EFI bootloader. (Because i got blackscreen after an update and system was damaged ...
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Booting LUKS Linux installation from external USB disk

Before: SATA internal SSD with a LUKS encrypted ext4 partition (Debian installation) + a small unencrypted boot partition with kernel, initrd and GRUB configuration files After: that same disk is now ...
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How to fix unknown file system error in grub rescue?

Somehow my grub had a problems and it does not know the file system. Is it possible to rescue it? I have grub rescue> ls (hd0,msdos5) (hd0,msdos5): Filesystem is ext2. grub rescue> set boot=(...
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How do I debug a corrupted self-compiled and installed Linux kernel?

I spun up a Debian (Buster) 4.19.0 VM and after some gcc fun successfully compiled a 3.19.0 Linux kernel. There weren’t any errors and everything seemed to go smoothly as far as I could tell. To ...
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Operating System & Grub in 2 USB Sticks - Arch Linux

I tried very hard on this one, but nothing is coming up, Basically what I am trying to do is as follows: When starting my machine before the Windows pop up, the Bios call one USB that holds the GRUB ...
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/bin/bash Permission Denied

I'm trying to install GRUB onto a separate partition who's volume shares a Windows installation. After having pulled, configured, and made GRUB, I can't grub-mkconfig. Doing some research, I found: ...
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EFI\boot\bootx64.efi vs EFI\ubuntu\grubx64.efi vs /boot/grub/x86_64-efi/grub.efi vs C:\Windows\Boot\EFI\*

I have installed Ubuntu 19 64bit alongside Windows 10 64bit and I found that I have 3 different EFI files in different locations: EFI\boot\bootx64.efi EFI\ubuntu\grubx64.efi /boot/grub/x86_64-efi/...
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Grub 2 Seems to Trash Its Own Install When Trying to Install to an SD Card

I was trying to install Arch onto an SD card today, and was surprised to find that when I rebooted my machine to test it that it had completely trashed the bootloader on my NVME drive, even though I'...
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Broken grub bootloader on dual boot debian and windows machine

I have machine with AV Linux (variety of Debian 10) and Windows 10. Originally I had Ubuntu and Windows and installed AV Linux in the /dev/sda7 partition. This broke the grub boot loader. When I ...
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1answer
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Not able to boot into arch linux after installing arch linux

Hello i'm in a pretty dangerous situation right now,i was installing Arch-Linux into my computer and my grub didn't install correctly as it was showing sector 32 was in use by flexnet and it didn't ...
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1answer
51 views

grub boot menu not showing after arch installation

After installing arch linux, grub doesn't show the boot menu. Instead I get a grub prompt. /dev/nvme0n1p1 is the efi partition. /dev/nvme0n1p2 is the swap partition /dev/nvme0n1p3 is the file system ...
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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
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Modify /etc/passwd file without logging in

I was experimenting with the /etc/passwd file in my Ubuntu 18.04. I rebooted my machine to check whether the changes are affected. But unfortunately I am not even able to go to the login screen. The ...
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1answer
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grub-install: error: failed to get canonical path of `/boot/efi'

nixos-install building the configuration in /mnt/etc/nixos/configuration.nix... copying channel... installing the boot loader... setting up /etc... updating GRUB 2 menu... mktemp: failed to create ...
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Ubuntu partition booting into gnu grub after being encrypted with Veracrypt

I am dual booting windows 10 and Ubuntu 18.4 and it worked fine till now. Today I encrypted the Linux partition of my hdd using Veracrypt and since then the Ubuntu always boots into gnu grub version 2....
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Installed Debian alongside Windows 10 but GRUB does not show

I have one SSD on which Windows 10 is installed, and one hard drive initially partitioned entirely in NTFS - but I shrunk the NTFS using the Debian installer and installed Debian on the newly freed ...
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Why is Debian “Stretch” force feeding me with unstable (beta) GRUB package?

When searching for available GRUB2 packages for the Debian v9.11.0 "Stretch", I get only beta packages listed: root@Debian:~# apt search GRUB2 Sorting... Done Full Text Search... Done grub-imageboot/...
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Transferring Grub on MBR connection to different Linux distribution

I had a Linux distribution which had installed grub on MBR. Then I installed second Linux distribtion on a different partition but did not install grub in it. Then I went to first Linux distribution ...
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1answer
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How to upgrade GRUB v1 to GRUB v2 without installing a Beta version?

My Linux Debian v9.11.0 (Stretch) currently has GRUB1 installed. root@Debian:~# grub-install -v grub-install (GNU GRUB 0.97) My other Ubuntu Linux has GRUB2 installed: root@Ubuntu:~# grub-install -...
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Adding a new menu entry to GRUB (booting from hard drive)

Let me preface this by saying that I'm very new to Linux and operating systems in general so I might not understand every aspect of my problem. I would be extremely grateful if someone decided to help ...
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After deleting Ubuntu in a dual Windows 10 and Ubuntu, now none of the two boots up

grub> ls (hd0,1)/ System Volume Information/ Ubuntu-18.04.3-desktop-amd64.iso But Ubuntu does not boot and neither does Windows 10. I get an error message: You need to load the kernel first ...
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1answer
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Can't see the new boot menu on Mint Mate 19.3

The patch notes of Mint 19.3 showed this new boot menu. I've upgraded from 19.2. However I don't see the new boot menu but just the good ol' minimal GRUB. I even ran sudo grub-update but nothing ...
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1answer
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Grub menu not showing up instead windows directly loads

I have HP da-0077tx laptop pre-installed with DOS but I installed cracked version of Windows 10. Now I recently installed Elementary OS (dual boot). After installing Elementary OS due to some reasons, ...
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1answer
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Unable to set default entry in grub menu

I have a computer with two different Debian operating systems installed on it. I usually use the first installed one, but I'm not able to correctly set up grub to use that as the default option: every ...
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Vmlinuz invalid signature at Install with CentOS 8

When trying to install CentOS 8 in my Desktop with a asus motherboard that supports UEFI and secure boot I got the error /images/pxeboot/vmlinuz invalid signature, googling I found that it was about ...
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1answer
157 views

systemd Time out waiting for device dev-mapper-vg

I've got a Debian Jessie system and I'm trying to recover this onto a RAID 1 with LVM. I've got a RAID1 over two 2TB NVMe drives and my /boot is on a USB booting in Legacy mode to Grub2. That bit ...
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Manjaro update-grub syntax error

After letting my computer sit for an extended time without updating, I ran Pacman -Syu for a full system update. During the update the process was interrupted or something because the grub entries ...
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129 views

Dual boot Windows 10 and Linux Mint wont boot to GRUB

Dual boot Windows 10 and Linux Mint wont boot to GRUB. Recently installed Linux Mint on my home computer. I am dual booting Linux and Windows 10. Windows 10 is installed on my SSD and Linux is on my ...
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1answer
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Can I update Debian through grub? [closed]

After an update of Debian 9 ('Stretch'), I can't open any program. Is there anything I can do on grub? Can't even open a terminal.
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Unable to boot into osx after resizing partition and installing ubuntu

After installing ubuntu on my macbook it now shows up when pressing alt at startup and i can boot it. The problem is, that the Macintosh HD OSx installation does'nt show up as a boot option anymore. ...
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/boot /home structure needs cleaning. I cannot access to those folders

After a night leaving ddrescue running to clone a external disk to another external disk and creating the log file in my internal hard disk, I got up and the laptop was stuck so i restarted it. When ...
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GRUB does not show selection of OS

I have installed Arch Linux and GRUB afresh. It seems to have worked alright, but when I now boot from the harddisk, I only get the GRUB prompt, without any operating systems to boot. My guess is that ...
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2answers
70 views

Installing Arch Linux Error: grub-install: error: cannot find EFI directory

I'm trying to install Arch Linux on my machine, following these instructions. timedatectl set-ntp true timedatectl status cfdisk mkfs.ext4 /dev/sda2 mkswap /dev/sda3 swapon /dev/sda3 mount /dev/sda2 /...
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1answer
31 views

Multiboot USB purely Linux - No third party software

Is it possible to create a multiboot USB for Linux distributions, purely from Linux, without third party software? NOTE: this is a self-answered question. I wanted to share my methods with the ...
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40 views

Cannot reset root password through Linux command menu

When I run through the full sequence of commands given to me to reset my root password, the Linux Command menu says I correctly reset my password, however I cannot use the password i set it to. The ...
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1answer
38 views

Linux password reset through Grub menu doesn't work

when i try to reset my root password through the grub menu I get the prompt: root@(none):/# If i wait to long, like 4 seconds, I get the message: [ 15.011870]random: crng init done [ 15....
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1answer
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How to add second linux distro (xubuntu) to grub?

I installed Xubuntu on a pcie ssd to use side-by-side with Mint. But, I still want to use Mint on its current SATA ssd drive. Ideally, I'd like to make sure that the Xubuntu installation is bootable (...
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1answer
41 views

GRUB normal.mod not found after installation

I am trying to install Linux dual booted with Windows on my computer. I am interested in networking so after researching online a bit, I wanted to install Kali. After getting a Live USB loaded up, I ...
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395 views

grub-install: error: failed to register the EFI boot entry: Function not implemented

after upgrading to Ubuntu 19.04 I frequently got a 'failed to register the EFI boot entry: Function not implemented.' error when installing new packages. Now I updated to Ubuntu 19.10 and the ...
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Grub2 Warning: Syntax error (missing slash) in '`

Recently I upgraded from ubuntu 16.04 to 18.04. But due to some unknown reason I started to receive this warning message before my grub2 menu shows up. I have no problem converting /etc/default/grub ...
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GRUB loads always windows in safe mode [SOLVED]

I've installed Fedora 31 on a notebook with Windows 10, GRUB shows me different options on boot, and when I choose Windows the system starts but always in safe mode. I have no options to load Windows ...
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2answers
73 views

double grub problem

I have just installed a new ubuntu on my system which lives alongside another linux distro. My original linux distro uses grub to boot. However now when I boot my laptop it boots into a new grub which ...
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Grub detect wrong version of Windows [duplicate]

i have a laptop with Windows Vista but Grub detects as Windows 8 no matter what distro i use, Grub always detects my Windows Vista as Windows 8, how can i fix this?
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ucsi_ccg_init failed - -110

[ OK ] GRUB failed boot detection. [ 145.200501] ucsi_ccg 0-0008: ucsi_ccg_init failed - -110 System not booting up Tried Linux 5.0.0-32 Genric recovery mode, what happened is attached in the pic.
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Specification of efi-directory and device in grub-install

I have this layout of my USB flash disk: +---------------+ +----------------+ | | | | | EFI partition | | data partition | | | | | +------...
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41 views

Grub2 chainload syslinux

I have a USB with GRUB installed. I add linux ISO images, and use their grub.cfg file to boot. Everything fine so far, with many distros. But now I want to boot an ISO image that doesn't have GRUB ...
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323 views

Fail to boot: mounting `/boot/efi` raises “IO charset iso8859-1 not found”

I was using Ubuntu 19.04 for some time and wanted to try the recently released Pop!_OS 19.10. I want to keep using GRUB, but Pop!_OS (or maybe I did it while trying to repair) mangled my bootloader, ...
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2answers
60 views

How to ensure that GRUB is booted by default, not Windows

I have a Dell G5 laptop with Windows 10 and Ubuntu 16.04 installed to an NVME drive with /home and D: partitions mounted on the Hdd Previously, when I switched my laptop on it would go to GRUB by ...
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20 views

Multiple issues after Debian installaion

I installed Debian 10 to dual-boot on my Mac mini. I followed the instructions from the Debian site and I manage to boot into Debian. However, there is no OSX on Grub and in Debian there are no wifi, ...

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