Questions tagged [grub]

Console application permitting the user to choose between several installed operating systems.

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2 votes
3 answers
2k views

Debian software RAID1 is not working when I remove hard drive

I have been trying all weekend to get RAID working on an old server computer with the Intel ICH7 / ICH7-R SATA-II controller running dual hard-drive with RAID 1. After giving up in hardware raid, I ...
0 votes
1 answer
5k views

Debian Stuck at Booting from Hard Disk after installation on KVM

I'm trying to install Debian on Qemu-KVM on RouterOS v5.25 I tried : debian-10.8.0-i386-netinst.iso debian-8.11.0-i386-kde-CD-1.iso debian-live-9.0.0-i386-gnome.iso on disk image created using : qemu-...
-1 votes
0 answers
49 views

How do I get myself out of docker hijacked network situation on my Debian VM?

I ran into a problem with wg-easy docker in trying to set up Wireguard using docker on my Debian VM so I changed network_mode to host as a last resort without learning about the consequences... The ...
48 votes
4 answers
80k views

How do I tell if grub is installed on a device?

How can I tell if grub is installed on a disk, and if it is what settings it has (noteably, what it has for the root parameter) I need to check a lot of disks in software RAID1 arrays to make sure ...
5 votes
1 answer
12k views

mount: mounting /dev on /root/dev failed: No such file or directory after converting lxc to virtual machine

I've been trying to convert an lxc container to a virtual machine, but I've encountered a problem when trying to boot. I end up with the (initramfs) command line and I've got the following errors: ...
1 vote
1 answer
537 views

RHEL + how to prevent OS disk - sda to change after reboot

We installed RHEL 7.9 version on physical machine., when sda device was the OS. The machine has the following disks. sda - OS disk sdb - data disk sdc - data disk After reboot OS disk device changed ...
0 votes
1 answer
161 views

Debian 11 fails to update grub configuration

I have the following error when I run an update script with ansible: Generating grub configuration file ...", "Found linux image: /boot/vmlinuz-5.10.0-26-amd64", "Found initrd ...
0 votes
0 answers
82 views

When running `grub-install /dev/sdb` I get the error: ls: /dev/sdb/proc: Not a directory

I'm running the Debian 12 bookworm installer (debian-12.4.0-amd64-netinst.iso) and trying to install with GRUB and MBR because the UEFI support from my motherboard seems to be limited (I couldn't make ...
2 votes
1 answer
254 views

GRUB fails to start kernel after net_dhcp

I originally ran into this problem trying to redeploy a machine using MAAS, but I can reproduce it just with the already-installed OS and GRUB, with Ubuntu 20.04. The machine is set up for UEFI boot. ...
0 votes
1 answer
277 views

Grub2 Error grub-boot-success.service: Main process exited, code=exited, status=1/FAILURE

I'm running a VPS with Alma Linux 8.8.0 with WHM/cPanel and 60 or so users, multiple websites etc. I'm regularly seeing these in the server 'messages' log: Nov 16 11:39:01 ark grub2-set-bootflag[...
0 votes
0 answers
145 views

/grub/i386-pc/normal.mod not found with special condition

I updated my ubuntu server from 18.04 to 20.04 and reboot. after reboot I fall in grub rescue. in the (hd0,gpt2) there are some directories include grub. in grub there is i386-pc and in the i386-pc ...
13 votes
3 answers
3k views

Finding how a Linux system was booted

I have a remote server, running Linux 5.19.0-41-generic x86_64, I am trying to find out how it was booted. Apparently, it does not use systemd : PID 1 process is bash. ps -p 1 -o comm= bash ...
0 votes
1 answer
341 views

pbkdf2 password on grub doesn't work on my Ubuntu 22.04 Vm

I installed a Ubuntu 22.04.3 LTS on a VirtualBox VM. After install process, I configured pbkdf2 as explained here https://help.ubuntu.com/community/Grub2/Passwords. I also verified grub.cfg after I ...
0 votes
0 answers
153 views

grub-efi-amd64 on ovh serwer

This is ovh server. root@ns302572:/home/saltworks/panel.saltworks# sudo apt-get install libvirt-daemon result Reading package lists... Done Building dependency tree Reading ...
1 vote
0 answers
220 views

How can linux system boot/reboot without bootloader installed?

Today I saw that grub is missing on my system (how that happened is another question). Checked with apt/dpkg: no grub* package installed, also no lilo or systemd-boot package installed. Also was ...
0 votes
0 answers
37 views

dualboot win11 + linux = BlInitalizeLibrary Failed 0xc00000bb

Recently I wipe macbook pro disk (intel cpu) and installed win11. windows works without problems. The problem born when I installed on same disk linux debian with grub. Debian works but when I select ...
0 votes
0 answers
18 views

not possible run windows from other this after install grub

I have this disks sudo fdisk -l [sudo] password for grek: Disk /dev/loop0: 91.69 MiB, 96141312 bytes, 187776 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / ...
-1 votes
1 answer
65 views

How to install grub to a CD-RW? [closed]

My very old server only has BIOS, no UEFI, and the boot order routine aborts booting when it encounters a drive larger than 2TB. The boot order is: CDs, HDDs, USBs, network. I cannot change the boot ...
1 vote
0 answers
56 views

how and when did my graphic card, drivers, monitor and xserver negotiate a proper resolution? Is there a way to get the supported list from devices?

I was trying to figure out how KDE or GNOME decides which resolution could be supported by the monitor and graphic card connected. I have 2 senario about this question, I will try to explain the ...
0 votes
1 answer
977 views

migrate root partition to another partiton

I have remote server with ubuntu 20.04 I can't use livecd or VM console I want to migrate my root partiton from /dev/sda2 to /dev/sda5 my disk configuration is: root@app-server:~$ lsblk NAME MAJ:MIN ...
0 votes
0 answers
590 views

Cannot boot on Arch Linux after modifying kernel parameters with GRUB

Looking for a way to set my backlights on my laptop running Arch Linux (and Windows on a dual boot), I edited the /etc/default/grub file to change a kernel parameter. Here is what I changed: # before ...
0 votes
1 answer
1k views

Repair GRUB bootloader

I had Xubuntu installed on my laptop on hard disk drive /dev/sda on partition /dev/sda1. Something bad happened and when I restarted my laptop, a black screen appeared with "kernel panic" ...
2 votes
1 answer
5k views

Ubuntu 18.04 "grub-install: error: cannot find EFI directory"

I have this issue on multiple Ubuntu 18.04 (Bionic Beaver) servers. During a regular apt update && apt upgrade, I get this error: Setting up grub-efi-amd64-signed (1.167~18.04.1+2.04-1ubuntu44)...
1 vote
0 answers
214 views

NVMe drive disappears after kernel panic

I'm working on imaging a Dell OptiPlex Micro 3000 device with Linux (custom Yocto-based OS). Grub version 2.04. I'm using an A/B partitioning scheme and trying to get the fallback to function properly ...
0 votes
1 answer
188 views

grub error after kernel update with active root LVM snapshot

The situation: debian 11 with LVM and / is a logical volume: /dev/mainvg/lv-root created a snapshot of the root partition by doing lvcreate -L5G -n bkp_lvroot -s /dev/mainvg/lvroot Now I updated the ...
1 vote
3 answers
1k views

Grub CLI Arrow Keys Don't Work With IPMI SOL

When I am using the Grub CLI via IPMI sol I am unable to use the arrow keys, as well as some keys such as delete. What happens when I press the Left key I get random 'D' characters appearing, even ...
2 votes
1 answer
2k views

grub on debian wheezy doesn't recognise mdraid

We're having a really strange problem when trying to boot from an mdraid on Debian Wheezy. All references online that I can find tell me that grub 1.99 (which is part of Debian Wheezy) should have no ...
0 votes
2 answers
3k views

install grub in a usb and boot proxmox from another drive

Good morning my friends! I'm tryng a solution before buy some new hardware. So this is my situation: I have some beautifull hp dl360p gen8 that comes with an p420i hardware raid controller. What ...
1 vote
0 answers
1k views

Ubuntu 22.04.1 LTS (Jammy Jellyfish) Hangs On Reboot (sometimes)

I have an Intel NUC NUC8I7HNK which I have installed Ubuntu on. If I reboot the system and then reboot it again everything is fine. Reboots without problem. However, if I let the system sit for a ...
0 votes
0 answers
157 views

Debian Software Raid1 boot failure after trying to change one disk

I have a server running Debian 11 with 3 HDDs, each 500gb using software RAID1. I'm now in the process of upgrading so I have 2x1TB drives. To accomplish this I followed this guide. The disk I removed ...
0 votes
1 answer
2k views

Configure GRUB on XEN VPS

I have a xen VPS with debian 7 x86_64 installed on it. The operating system comes with GRUB2 installed on it. The problem is that while runnnig apt-get update apt-get upgrade -y GRUB says The GRUB ...
4 votes
1 answer
2k views

Error 5 partition table invalid or corrupt

I'm trying to add a second SSD to a Centos 6 system. But I get the Error 5 partition table invalid or corrupt at boot. The system already has a single SSD (sdb) and a pair of HDDs (sd{a,c}) in a ...
0 votes
1 answer
3k views

Ubuntu / GRUB reboot loop

I had to shutdown a server due to a power outage... The machine's been working just fine, an Ubuntu 12.04 box. Now when I boot back up, I get the GRUB 1.99 boot menu with several options, all of which ...
0 votes
1 answer
963 views

Fedora 31 Grub2 configuration change isn't being applied

I've changed GRUB_TIMEOUT=-1 in my /etc/default/grub because I want the grub boot loader to wait forever for me to choose my operating system. Most of the internet says to run update-grub after ...
1 vote
0 answers
307 views

grub2 font advice doesn't work

I'm running Fedora 31 on a Lenovo T470p, with GNU GRUB version 2.03 platform x86_64-efi . I wish to have a far larger font. As many, many suggestions on the internet advise: 1] I've added the ...
1 vote
1 answer
2k views

dracut: Switching root

After my hosting company did some changes (no technical description for them) I got the following boot error for my CentOS: What I must do to get my servers up! I tried to ask for support at the ...
1 vote
0 answers
1k views

Grub error with tpm module in Fedora

I have a problem booting my fedora 36 (in version 35 the same thing happens to me and I have tried to reinstall from 0 with the same result). When I boot the grub I get this error. error ..... tpm.c:...
1 vote
1 answer
3k views

'Could not find filesystem /dev/root' after Clonezilla clone of redhat install to newer hardware'

I am cloning what appears to be a redhat 4 (possibly 5?)server to fairly newer hardware, as the original has a failing board. DBA would rather not reconfigure a new installation so they want me to ...
0 votes
0 answers
902 views

Volume group "luks" not found

OS: Parrot OS VM: Qemu Filesystem: Btrfs This is caused due to an improper reboot before full apt upgrade. After the reboot and entering in the Luks partition password. It successfully decrypts and ...
0 votes
1 answer
2k views

Blank screen after grub menu

I just rebooted an Ubuntu Server 10.04. After choosing boot options in the grub menu, though, it just displays a black screen with the blinking white underscore in the upper-left corner. The machine ...
1 vote
3 answers
1k views

Reducing Amazon EBS Root Volume Size on Amazon Linux 1

I have been trying to reduce the size of my Amazon Linux 1 AMI root volume using the procedure in this documentation (with some modifications made after failing to do so) and continuously run into ...
2 votes
2 answers
1k views

Grub incorrectly escapes $ character in its settings

Not sure where I make mistake but I can't escape $ correctly in /etc/default/grub. I'm on Ubuntu MATE 18.04. This is what I do: In console I edit confid by calling sudo mcedit /etc/default/grub I ...
1 vote
1 answer
2k views

How to recover from the GRUB losing its entries and faced with only "grub> _" at boot?

I performed a system upgrade from CentOS 7 to AlmaLinux 8 rather successfully (as noted here). During the process something strange happened and GRUB lost its boot entries entirely and my limited ...
0 votes
1 answer
333 views

Ubuntu ZFS install hangs before reaching grub menu

After upgrading some packages and restarting, I can no longer reach the grub menu. My system hangs at the motherboard logo and provides no other output. I can boot to an Ubuntu Installer USB, and I ...
1 vote
0 answers
936 views

Rescue mode with grub and chroot /mnt/sysimage after a VMWare conversion

EDIT: After some more snooping I saw this: https://virtualkryptonite.blogspot.com/2017/07/vmware-converter-p2v-partition-number.html (not sure what VG means in the post) but this is essentially what ...
1 vote
3 answers
12k views

Compiling linux kernel - `make install` asks for LILO. Now what?

So I am following this guide to compile my custom kernel - http://library.linode.com/linode-platform/custom-instances/pv-grub-custom-compiled-kernel#sph_compile-and-install-the-kernel So far so good, ...
0 votes
1 answer
2k views

How to make grub for fully portable linux on usb thumbdrive without writing entry to systems EFI?

I've installed Debian Bullseye on a usb thumbdrive. When I plug the thumbdrive notebook bootet from it, because there was an entry in UEFI "debian". After removing it with sudo efibootmgr -b ...
0 votes
0 answers
195 views

Cannot reinstall grub on newly created boot partitiion

12. Reinstall grub on the newly boot partition: # grub-install --recheck /dev/xvdg # sed -i 's/sdg/xvdg/g' /boot/grub/device.map # grub-install /dev/xvdg Running first line gives: Probing devices to ...
3 votes
3 answers
4k views

Multiple boot options (in grub boot list) appeared after yum update

I am quite new to Linux administration so I am having trouble understanding yum update and grub boot list. I recently did a yum update on an old CentOS machine. Everything is good except there is ...
1 vote
0 answers
170 views

Converting sgdisk to sfdisk for old machine with MBR

I want to put ZFS on an old machine, however it apparently fails to boot with GPT. So I wanted to convert this script, mainly these 3 lines to sfdisk, which uses MBR. https://github.com/terem42/zfs-...

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