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Questions tagged [grub2]

GRUB (GRand Unified Bootloader) is a bootloader package to load operating systems. GRUB2 is a rewrite, and the dominant version since 2009.

Grub (GRand Unified Bootloader) is a bootloader package.

Briefly, a boot loader is the first software program that runs when a computer starts. It is responsible for loading and transferring control to the operating system kernel software (such as the Hurd or Linux). The kernel, in turn, initializes the rest of the operating system (e.g. GNU).

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Grub2 after Upgrade to Fedora Server 27

I upgraded to F27 and went to emergency shell after reboot. After hours with google and experimentation, loaded recovery from install CD, found OS image and copied /usr/lib/os-release to /etc/os-release, and that, among other things I probably…
jerryrig
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CentOS 7 ignores saved_entry in grubenv

I recently updated my kernel, but the system keeps booting into the old one. I checked /boot/grub2/grubenv and the only entry is saved_entry pointing to my new kernel. However, whenever I reboot it always boots straight into the old kernel. Any…
LoneWolfPR
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grub2 RAID1 disk failure - unable to boot

Background I am setting up a server with software RAID1. This includes the /boot partition being mirrored (mapped to md0). My aim is that if one of the two hard drives containing the OS (sdc and sdd) were to fail, I would still be able to boot using…
GustavMahler
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Updated grub 2 config when win10 is updating, cannot continue update now, how to fix it?

I have win10 and fedora 27 on two different hard disks, and I use grub 2 as bootloader. Today win10 autorestart to update, and my default boot system is fedora, so I enter fedora to change grub 2 boot order and grub2-mkconfig -o…
huron
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Debian Jessie Kernel won't install, could be a grub2 issue?

I have an issue with one of my xen VMs that I would like resolved doing apt-get install -f shows following. Can anyone help me make sense of this? Reading package lists... Done Building dependency tree Reading state information... Done 0…
mahatmanich
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How to pass an ignition.json to a Xen CoreOS DOMU when using libvirt or `xl`

I have a baremetal server with Xen, and Debian 9 as DOM0. This server has libvirt, and I can happily create PV domains by using xl, virsh or remotely using virt-manager. I want to streamline coreos VM creation, by passing them at creation time an…
Pablo
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How can I get grub2/opensuse boot process to ignore raid partitions on non-primary disks?

I need to find out how I can get grub2/opensuse boot process to ignore raid partitions on non-primary disks. I have system with /dev/sda and /dev/sdb which are primary disks which boot UEFI from grub2 and a series of secondary disks. They look like…
gatomulato
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Grub fails to boot my barebone Arch BTRFS setup

I'm not sure what I'm doing wrong. I basically used the latest arch linux live disk in a VM (Linux KVM), booted the latest arch linux live disk in a VM (Linux KVM on Arch) made a single partition formatted that with btrfs -m dup mounted the…
Alex
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Add menu entry in grub2 for os on btrfs partition

How can I add a menu entry in grub 2 for an os on a btrfs partition? Currently update-grub does not detect an os on a btrfs partition.
apanagio
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OpenSUSE Xen installlation is not in Grub 2

I'm sorry if this is a duplicate but somehow serverfault search action didn't work with my browser. I have a functional recent OpenSUSE Tumbleweed installation and I want to turn it into a hypervisor. I went to YaST, virtualisation, installed xen…
rostamn739
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WDS&PXE booting using Grub2 - choosing menuentry

I have problem with booting to WDS using PXE with Grub2. Actually we are using WDS with DHCP (Windows) - on DHCP I have WDS IP and 'grldr' file as bootfile name (grub loader) with menu.lst file (on target computer). I booting via pxe, grub searching…
Boqler
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How to add systemd.setenv in GRUB2

I would like to add systemd.setenv=NSS_HASH_ALG_SUPPORT=+MD5 parameter in grub2 for centos7? I don't know which files I've to modify, and which lines I've to insert this parameter. Thaks for your help.
dubis
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OpenSuse 13.1 GRUB2 downgrade GRUB stuck on menu

I was trying to virtualize a opensuse server and discovered that GRUB2 is not supported by VMWare, at least without some fiddling. I went into Yast and changed the bootloader from GRUB to GRUB2, and told the machine to convert the existing…
chongo2002
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grub2/initramfs disaster recovery

One of my ubuntu 12.04 is a vm on vmware ESXi host. It has separate boot and root partition. One developer did fsck on the live root partition by mistake and this vm can only boot to initramfs mode with some errors - "/proc is not found". My…
user3768947
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In Ubuntu, how to enter grub rescue mode when gettint error 17

I'm booting up a machine and I'm getting error 17 from Grub. Is there any way to enter grub rescue mode without a live cd? (this is a remote server that I have no access)
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