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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).

Official page

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How to diagnose why Grub won't boot a Windows partition?

I just imaged a Windows partition onto a new drive with dd. Then I changed the NTFS UUID to a new one. Then I ran update-grub (using grub2) and restarted. Now there is a new menu entry in the Grub menu corresponding to my new cloned drive - but when…
Louise
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Problems with grub with our RAID10 Ubuntu installation

We have a Dell PowerEdge R730xd with 24 SSDs of 500GB each. We need to install Ubuntu 14.04 LTS on this machine, and use it as a database (postgresql). Our RAID controller is an Avago MEGARAID, and to my knowledge it behaved exactly like a H310…
Helios
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Debian 7 can not boot, grub rescue show error: out of partition

Debian 7 amd64 running in VirtualBox 5.0.10, on Windows 8.1 ent x64 host. This VM running more than 1 years. Use basic partition, NOT LVM or any Raid. Today it's suddenly auto umount all disk, and mount / in readonly mode, I force reboot it on…
consatan
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Bootloader password - existing content found in /etc/grub.d/01_users

I need to set a bootloader password and am apprehensive about changing the existing config (per warning about potentially making a system unbootable). RH documentation says to add the following lines: cat <
a coder
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How to remotely initiate netinstall of CentOS 7?

I've got 50+ machines running either CentOS 6.4 or 6.8. I wish to re-install these machines with CentOS 7 using a configuration script (for example using the "basic server" template and setting hostname/static IP based on hardware ID), using…
fredrik
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Problems installing software on AWS EC2 instance (Debian 7.8 'hvm')

After some issues due to the lack of support in required kernel for the network card in my machine (though I'm aware of how to compile the driver for my card, I don't want to do that, based on some issues with kernel headers for the target kernel),…
Aleksandr Blekh
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Hide kernel messages in plymouth

I am running Ubuntu 14.04 server for Kiosk application. The problem is when kiosk is starting , kernel shows some debug messages about stuff like USB port error and such things, and those ugly messages are being displayed over our plymouth splash…
Hasan
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XEN - Does pygrub alter grub on dom0

I apologize for question but I did not really understand the idea behind pygrub. I've downloaded VM from stacklet.com. The image is shipped as a ext4 file and pygrub config. My question is if I can run this image from dom0 standard way: xl create -f…
Wakan Tanka
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How to extend /boot which is not on lvm

I have a machine with 100 mb boot partition but for installing new kernel with other module it needs additional 50 MB. How can i extend it its not on LVM. If i attach new disk and copy whole content of /boot/* to new partition and set that in fstab…
kevin
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Single drive LVM to RAID6 LVM

I cloned my entire LVM volume group from a single drive to a RAID5 array with 3 disks. The VG is formed by these logical volumes: root swap home ... and other volumes of some XEN virtual machines. I tried to make the RAID5 array bootable using…
flip79
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How do I correct the kernel version loaded by Grub2 in Ubuntu 12.04

I have a linux vps running Ubuntu 12.04 and when I run uname-r it replies: paul@webforms:~$ uname -r 2.6.32.33-kvm-i386-20111128-dirty paul@webforms:~$ sudo grub-install -v grub-install (GRUB) 1.99-21ubuntu3.1 if I run update-grub I…
Paul D'Ambra
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grub2 failing to detect md0 for /

I recently set up a raid 1 array. Both / and /boot are on md0 (sda, sdb). everything was working when it was in degraded mode before I synced the two disks together. It was booting from grub2 on sda into md0 which was only on sdb. Grub2 was…
Karl
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Grub2 Command Line Restarts On Any Command

I've been attempting to configure a software raid1 using a pre existing Ubuntu 12.04 install by following the guide here. I successfully completed step 4 but then couldn't get Ubuntu to boot into the degraded raid device. I read somewhere that you…
MarcF
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Grub2 won't install on fresh Ubuntu 12.04 LTS Server installation

I have a hardware RAID 1 which seems to be recognized find by the Ubuntu installer. I choose the "Entire Disk - Guided" partition strategy and accept the defaults, writing them to disk. When it comes to choosing where to put Grub2, however,…
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Advanced configuration of Grub2 for RAID5 + Encrypted LVM where /boot needs redundancy

I recorded my complete installation until failure in case you have a question about the installation which I did not provide an explanation for below: http://www.youtube.com/watch?v=BVe5vja3keo During partitioning I created a software RAID 5 volume…
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