Grub (GRand Unified Bootloader) is a bootloader package.

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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 ...
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23 views

Debian Wheezy hangs before GRUB menu after successful install on Dell C-Series Server

I've just installed Debian Wheezy on a Dell C-Series Server w/o any problems. However, at first reboot, I don't even get a GRUB menu. So I guess it's a problem with where GRUB was installed and maybe ...
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1answer
158 views

Text Mode Installation Of Ubuntu Server 13.10 With No Graphical Screens At the Installation Time [closed]

I am doing Ubuntu Server Installation, At this time when i just start installation of Ubuntu Server 13.10, I see Graphics, Is this possible to remove graphics and and only command line installations? ...
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0answers
41 views

Why does a grub setpci blocks the system on a mac mini while working when run from the OS?

I am trying to run a setpci command that enables reboot on power failure from inside grub2, just in order to be sure that this is executed as soon as posible. The problem is that while this works ...
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197 views

Installing Debian 7.1 on FakeRAID/Intel Z77 results in boot with no grub menu

I'm trying to install Debian 7.1 from DVD onto 2x500GB drives which are set up in a FakeRAID mirror using the on-board FakeRAID provided by the Z77 chipset. I have followed the guide here ...
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0answers
59 views

Why do my Ubuntu storage cluster servers gets randomly stuck at grub prompt?

I have a number of Ubuntu 12.04 LTS servers that are part of a ceph storage cluster. The OS is on a specially prepared USB memory stick. The problem I'm having is that they very often get stuck ...
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1answer
220 views

Grub2 w/ RAID5 and btrfs “error: unknown filesystem”

I have a Virtual Machine (in ESXi 5.1) running Ubuntu Server 12.04. When I try to boot my system I grub2 tells me "error: unknown filesystem". I've tried booting a Live CD then reinstalling grub from ...
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1answer
150 views

How do I install Grub2 on the first hard drive but Ubuntu on the second?

I want to install the OS (Ubuntu 12.04) on the second hard drive, but I'm unable to access the BIOS so I must install Grub on the first hard drive. How do I install Grub on the first hard drive, and ...
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0answers
172 views

Ubuntu 12.04, after reboot, ping but don't have any service up ( ssh / apache )

I need a little help, I just reboot a ubuntu server 12.04 without any special modification, it doesn't start anymore, I have a ping return but connection refused on SSH and apache is not started Here ...
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0answers
29 views

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 ...
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0answers
143 views

Ubuntu 10.04 Server stuck at grub prompt

I have a virtualized server running 10.04 LTS that is no longer booting. We had a number of issues with our SAN that abruptly disconnected the storage from the virtual machine infrastructure and ...
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1answer
495 views

Grub2 reports physical volume pv0 not found on server non bootable anymore

I first installed my ubuntu server (11.10 amd64) using lvm but not fully mastering the concept of it. I think that's partly what made the mess of partitions on my two disks (seems to me). I installed ...
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0answers
76 views

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. ...
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1answer
549 views

How do I get rid of my duplicate GRUB entries? (Ubuntu 12.10, RAID1)

I have a Dell R300 machine running Ubuntu 12.10: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.10 Release: 12.10 Codename: quantal $ uname -a ...
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1answer
296 views

How do I use memtest86+'s “badram” output with GRUB2? [closed]

So after a while of things randomly crashing, I let memtest86+ run overnight, and it found errors. I enabled the "badram" error output, but every few seconds it shows me a differing selection of ...
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0answers
320 views

grub boot failed after upgrading to ubuntu 12.04 LTS

no such disk error occured. I tried to format and reinstall 12.04, the problem remained. I also repaired with boot-repair, the problem remained. http://paste.ubuntu.com/1224005/ is url of the ...
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1answer
103 views

How to make a bootable USB out of my VPS?

I copied a backup of my entire VPS (Debian on OpenVZ) on a USB drive, and want to boot from this USB to test something on my server (in fact its duplicate). However, there is no nothing in the boot ...
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1answer
3k views

How to force Debian to boot new Kernel?

I'm running Debian 6, Debian GNU/Linux, with Linux 2.6.32-5-amd64 under Grub2 ( 1.98+20100804-14+squeeze1) on a remote system (no possibility to view the pre-boot messages). I compiled and installed a ...
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1answer
576 views

Upgrade grub to grub2 with MD RAID

I have a machine running Debian 6. Because of some recent changes, I tried upgrading to Grub2 (yes, grub legacy was installed by default). Everything went well (chainloading, reboot) until I started ...
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1answer
159 views

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) ...
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113 views

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 ...
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1answer
370 views

Using Facebook's Flashcache on root particion (/)

I'm tring to implement Flashcache for a root particion for an ubuntu box. There is an excellent doc how to do this in flashcache: https://github.com/facebook/flashcache/blob/master/README-DKMS My ...
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93 views

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 ...
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1answer
68 views

Installed kernel not in /boot

I have a LAMP configured Ubuntu 10.04 LTS VM on my ESXi server. I've installed the "Virtual" kernel but only the original "Server" kernel is available at boot. ls /boot only shows files associated ...
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360 views

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 ...
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2answers
891 views

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 ...
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1answer
236 views

update grub2 without hardware access (e.g. in a chroot)?

I'm writing a script that takes a master KVM image, converts it to VDI, makes a few changes to it, and offers it up for download. I need to update the kernel boot parameters for some of the newly ...
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1answer
3k views

Setup grub2 on a GPT software raid 3 TB HDD

I like to setup grub2 on a GPT softare raid 3 TB HDD. Number Start (sector) End (sector) Size Code Name 1 2048 1050623 512.0 MiB FD00 Linux RAID 2 ...
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2answers
1k views

How to boot GRUB2 so it mounts “root” on a different drive (remote server without kvm switch)

Summary: I created a copy of the root file system on a raid array (with one disk on it), and im trying to get the system to boot off that newly copied drive. Background: 2 disks of same size in ...
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1answer
1k views

Grub2 reports physical volume pv0 not found when probing/installing

I upgraded a Ubuntu Maverick to Precise server but I get the following error while updating grub: error: physical volume pv0 not found. Now, for my system I have /dev/sda through /dev/sde ...
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1answer
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Ubuntu server, gpt partition table, mdadm, grub boot fail

Basic working system details: I used the Ubuntu 12.04 server CD to install a server. I have 4 disks. On all disks I did the following, similar to this howto : created a 2GB swap partition created ...
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3answers
2k views

RAID6 mdraid -> LVM -> EXT4 root with GRUB2?

2012-03-31 Debian Wheezy daily build in VirtualBox 4.1.2, 6 disk devices. My steps to reproduce so far: Setup one partition, using the entire disk, as a physical volume for RAID, per disk Setup a ...
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1answer
2k views

How can I find out where GRUB was installed?

I need to find where GRUB was installed, for example, which drive/partition. Is it possible to figure out where it was installed?
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1answer
1k views

Unable to boot after updating to kernel-3.1.4-1 in fedora 16

I was using kernel-3.1.2-1 in fedora 16. then updated to kernel-3.1.4-1. after reboot now grub shows command prompt instead of boot menu. i tried to load manually with: set root=(hd0,msdos3) linux ...
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2answers
3k views

Run fsck -y everytime at startup on my main partition Linux

I have an embedded linux system. I use grub2 for the boot loader. I would like to run an fsck -y /dev/sda on /dev/sda every time it boots--even when the system had a power loss and the reboot command ...
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1answer
140 views

Package upgrade on Ubuntu raid server and grub setup issue

I have remote Ubuntu 10.10 server running on raid system. I did package upgrade yesterday night for security reasons. During the upgrade, grub installation screen appeared and asked me which partition ...
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3answers
866 views

How to install grub on multiple disks?

I have weird situation - order of disks as reported by BIOS, is different than order of disks that Linux sees. Which makes for problematic run - grub installs to sda, but bios boots from sdd or ...
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2answers
205 views

Ubuntu: Configuring grub2 on a backup disk

I'm running Ubuntu 10.04, and planning to upgrade. Before I do, though, I want to make sure my backup/restore processes work. My backups, of course, have been running since I first installed 10.04, ...
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545 views

squeeze with lvm on top of raid 0 fails to boot using grub2

GRUB Loading Welcome to GRUB! error: no such device: <GUID>. Entering rescue mode... grub rescue> ls (hd0), (hd0,msdos2) (hd0,msdos1) grub rescue> set prefix=(hd0,msdos1)/grub ...
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1answer
3k views

grub2 does not find /boot on RAID1 md0 device

I have RAID1 md0 for /boot consisting of 4 partitions (sda2, sdb2, sdc2, sdd2). I'm using GPT on 2TB HDDs, so first partitions on each disk (sda1, ...) are 1-megabyte bios_grub partitions. I also ...
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2answers
5k views

How do I add xen kernel boot parameters in grub2?

I know that I can add command line parameters to the grub2 command line by editing /etc/default/grub according to this answer How do I add a boot parameter to grub2 in Ubuntu 10.10? However, that ...
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1answer
192 views

Ubuntu 10.10 unattended grub2 downgrade

I've got to install a few machines with grub legacy on them due to issues with symantec ghost (ghost is a requirement that can't be dropped). i've got a script that prepares machines, but there's a ...
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2answers
1k views

GRUB2 not detecting OS on raid partitions

I have recently added a drive to a system and have successfully raid'ed (RAID-1) the paritions, with the exception of the boot partition. I have it ready and mirrored, but can't get GRUB2 ...
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2answers
499 views

Setting up Linux softRAID10 so it can boot after a drive failure

I would like my RAID10 to survive the failure of the bootdisk. I want to write grub to the MBR of each disk in the array so that in the case of a failure the array will still boot on the remaining ...
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1answer
1k views

How Do You Non-Destructively Check if grub2 is Installed in The Boot Sector or is Being Chain-Loaded by grub1, Without Rebooting?

We're upgrading several systems from Debian Lenny to Squeeze and I'd like to ensure that I haven't missed any grub2 installations. By default, Squeeze chain-boot-loads from grub1 and you have to run ...
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7answers
14k views

Headless Ubuntu server machine sometimes stuck at GRUB menu

I have Ubuntu 10.10 Server installed on a single-board machine in a semi-embedded environment; no keyboard or screen, just SSH access to it. So it's really frustrating when it occasionally boots up ...
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3answers
3k views

Linux Software RAID1: How to boot after (physically) removing /dev/sda? (LVM, mdadm, Grub2)

A server set up with Debian 6.0/squeeze. During the squeeze installation, I configured the two 500GB SATA disks (/dev/sda and /dev/sdb) as a RAID1 (managed with mdadm). The RAID keeps a 500 GB LVM ...
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1answer
686 views

Update Grub on Squeeze - Kernel downgrade due VMware Server [closed]

I happen to run into various problems regarding grub and kernels. I don't really care about the kernel internas. All I want is VMware server in that dedicated root-server. 1.) What is a bzImage vs. ...
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1answer
649 views

How do I add a boot parameter to grub2 in Ubuntu 10.10?

I got my Ubuntu server built and working, but I have to manually add a boot parameter ("no-hlt") into grub to start. I'm running maverick so it's grub2..and I can't figure out how to put it in so I ...
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1answer
804 views

Xen 4.0.1 on Ubuntu 10.10 not booting

I'm trying to get Xen 4.0.1 run as dom0 on a fresh/clean install of 10.10 desktop (x64). Followed the step by step tutorial at http://wiki.xensource.com/xenwiki/Xen4.0 I have the pvops kernel in ...