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

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1answer
2k views

Grub install failing on Hardware RAID with LVM

I have a SuperMicro box with an Areca RAID controller installed. The RAID controller is configured for RAID 6 + Hot Spare. I am attempting to install Ubuntu 12.04 LTS. I set up LVM with separate ...
0
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0answers
23 views

Unable to install grub to software Raid array in Ubuntu

How do you ensure Grub is properly installed on a software RAID array in Ubuntu? I have a failed RAID array on an Ubuntu 14.04 server. When I first tried booting it, the Grub screen came up, but ...
1
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2answers
3k views

CentOS 6 Xen guest fails to boot after 'yum update'. Kernel?

I Seem to be having an issue with a Xen guest not booting after a yum update. DomU Configuration: #kernel = '/boot/solus-vmlinuz' #ramdisk = '/boot/solus-initrd.img' bootloader = ...
1
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0answers
44 views

What is the issue with the boot setup on this raid array?

After a secure erase of /dev/sda (Samsung 840 Pro) I had to setup grub on /dev/sda2 (for some unknown reason the /boot partition is the second one). So I ran something like this: grub<br> ...
2
votes
3answers
556 views

Linux RAID1 Software - grub resync after fail

I've a linux server with 2 IDE HD & Raid (hda - hdb) I've changed the "BAD" hdb with a new: mdadm --fail /dev/md2 /dev/hdb3 mdadm --fail /dev/md0 /dev/hdb2 mdadm --fail /dev/md1 /dev/hdb1 ...
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0answers
68 views

Ubuntu 12.04.x and 14.04 Server Preseed Grub Install fails

I have servers with multiple disks on which I need to preseed Ubuntu Precise and Trusty server editions. I've tried googling and reading debain pages and blogs but could not get this working. I either ...
11
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2answers
1k views

Anyway to get GRUB failsafe to timeout?

I've got a bunch of headless servers installed in random (remote) locations all running Ubuntu 11.04. Sometimes the boxes go down and never come back up, eventually someone goes out to check on them ...
2
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3answers
3k views

Use GRUB/GRUB2 to PXE boot OS image

Asked this in stackoverflow but they recommended I post this here: Here is the situation I am in: I currently have a Windows drive that boots XP. The BIOS does not support PXE booting so this is out ...
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2answers
3k views

Grub rescue, will not boot from mdadm RAID, no such disk or device — mduuid wrong?

I am running a 14 disk RAID 6 on mdadm behind 2 LSI SAS2008's in JBOD mode (no HW raid) on Debian 7 in BIOS legacy mode. Grub2 is dropping to a rescue shell complaining that "no such device" exists ...
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4answers
2k views

GRUB “Some modules may be missing from core image” Error

one HDD crashed from my RAID and I added a new HDD. Now I wanted to install GRUB to the new HDD: with grub-install /dev/sdb. I get these errors: Installing for i386-pc platform. grub-install: ...
2
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1answer
78 views

How to boot to shell with Solaris?

I would like to boot Solaris to shell (root prompt) directly for recovery purposes. On linux I would pass a kernel option init=/bin/bash and it would directly boot me into shell without asking for ...
2
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2answers
2k views

Getting Grub2 to recognize a Raid 10 boot/root

I've been trying to get my raid to boot from grub2 for about 2 days now and I don't seem to be getting closer. The problem appears to be that it doesn't recognize my raid at all. It doesn't see (md0) ...
1
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1answer
39 views

How do I replace a disk with LUKS on LVM2 - no raid, no span

I have LUKS on LVM (LVM Partitions created first, then each partition is encrypted separately, following this guide on Arch Wiki). I am using two volume groups, and each is isolated to a drive. This ...
4
votes
2answers
5k views

mdadm raid 1 grub only on sda

I just finished setting up a CentOS 6.3 64bit server with mdadm however a lightbulb went on and I realised grub would only be installed on the first drive which is about as much use and an ashtray on ...
0
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1answer
261 views

How to fix when grub no longer mounts the boot partition at start up?

This system has a boot partition on a dm-raid device. I updated the system by standard methods from an older Ubuntu to the latest LTS. Now, if the kernel is updated by "apt-get upgrade", the new ...
2
votes
1answer
154 views

Default kernel boot parameter on Red Hat 6 / CentOS 6

I would like to understand if, and how, it is possible to configure default kernel boot parameters on Red Hat 6 / CentOS 6 (grub legacy bootloader). I very well understand how to manually configure ...
2
votes
4answers
14k views

Debian boot to single-user mode

I forgot my root password and am attempting to change it by booting into single-user mode, however when booting I get this screen: Then I press "e" to edit the boot configuration and I get this ...
1
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3answers
1k views

How to install grub on a completely empty hard drive?

Normally, there are solutions available out there to restore grub or install grub provided that linux in installed first. How can I install grub while not having any partition which has an installed ...
1
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1answer
76 views

Install grub on mounted kvm image?

I am trying to mount a KVM image on the host machine in order to fix a grub issue however seem to be going wrong somewhere. I have tried the following steps: mount -o loop,offset=32256 ...
0
votes
1answer
3k views

Stuck at grub prompt after a default CentOS 6 installation

I am having a very strange problem installing CentOS 6 that I've never encountered before. I've followed these same steps thousands of times before, but within the past couple weeks I've had two ...
-2
votes
1answer
226 views

framebuffer loads under Linux, but not Xen

I recently built a Debian "Wheezy" system, which booted via GRUB to a non-framebuffer console, printing Console: colour VGA+ 80x25 during boot. To /etc/default/grub I added GRUB_GFXMODE=1920x1200 ...
-2
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1answer
272 views

Empty /boot/grub/grub.conf of a remote server, how to recrete it from recovery?

My remote server (running CentOS 6.6 x64) can't boot anymore. Using the emergency recovery (a LIVE CD) i can actually look that /etc/boot/grub/grub.conf and it's empty (0 bytes). I don't know why, ...
1
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2answers
647 views

Grub can't find Xen multiboot file

I am running Debian Wheezy on a software RAID 0 with LVM. I'm trying to get Xen to work but grub refuses to boot in it. I installed Xen by following the instructions here: http://wiki.debian.org/Xen ...
4
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3answers
177 views

Modifying kernel cmdline in Ubuntu

I have a number of systems on which I need to modify the kernel cmdline, adding a few options. At the moment I do it using the following procedure: Open /etc/default/grub Modify ...
3
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1answer
57 views

How to keep specific old kernels around after a yum update

I know that in CentOS 6.x, you can put the following line in /etc/yum.conf which tells yum to keep the last N kernels (by default this is set to five): installonly_limit=5 However, there are cases ...
2
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2answers
3k views

What is the correct way to install software RAID 1 in CentOS 6.4?

I'm going to install CentOS 6.4 on HP ProLiant ML310e Gen8 server. This server has fakeraid controller so i decided to use software raid. The problem is that i don't know how to correctly install GRUB ...
0
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0answers
50 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 ...
0
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0answers
38 views

Using grml with btrfs

I'm trying to boot an ISO using grml and grub on a BTRFS root. However, after selecting the boot option from the menu grub (or some subsequent loader) fails to find the iso ...
0
votes
1answer
5k views

Solaris10 x86 mirror. Making second disk booteable when failure

Did a mirror (RAID1) with Solaris 10 in x86. Everything OK. Now, I´m trying to make the second disk booteable, this is: from grub or in case of failure of disk1. I edited /boot/grub/menu.lst: ...
0
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0answers
60 views

Why is update-grub unable to find my root device?

I created a new root partition and I am trying run update-grub inside a chroot. I bindmount the following for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done update-grub ...
7
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2answers
12k views

How do I set the default kernel parameters in CentOS for all existing and future kernels?

I'd like to remove the rhgb and quiet kernel parameters which are used by default when the kernel is booted in CentOS 6, but I want this to apply to all currently installed kernels as well as any ...
0
votes
2answers
640 views

Linux xen directly boot windows domu?

I have the following situation: got a new notebook with Windows7 pre-installed (sda1 with boot partition, actual OS in sda2), one physical disk (sda) created an extended partition (sda3), inside ...
1
vote
1answer
526 views

SuperMicro Superblade fails to boot from hard drive

Following issue. I have a number of Superblades with LSI MegaRAID SAS 9240-4i cards. One card per server. All of them use the latest firmware (20.13.1-0176) as of this writing (as per the LSI ...
1
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0answers
104 views

grub: Booting Ubuntu off /boot in LVM, broken after upgrade

I have servers I want to upgrade remotely and headlessly from Ubuntu 12.04 LTS to 14.04 LTS. This upgrade has to happen via script, with no interaction. The do-release-upgrade command exits cleanly, ...
0
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1answer
63 views

GRUB hangs on emergency boot

I am trying to get a server going and was extremely excited when I found out it would automatically boot if the power just suddenly stopped. So if i were to unplug the server while it was still ...
2
votes
1answer
737 views

Cannot install grub, segmentation fault, unable to identify filesystem, superfluous RAID member, found two disks with same index — Debian 7

A server was recently transported from location A to B, a long journey that took six months. Things have gone wrong due to nothing being labeled prior to shipment. Yes, I know --- it was done by ...
42
votes
7answers
26k 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 ...
3
votes
3answers
3k views

how to force grub to boot (no human input) regardless previous booting failure

When previous boot was failed. (because of power failure, hardware failure) booting will hang at the grub menu for human prompt. Can you set option to force boot up no matter what happened?
1
vote
2answers
528 views

Can't get my proliant N54l to boot from USB

I was trying to install ubuntu 14. onto a usb stick. It booted fine from the USB and I went through the process for a while until I got to the partitioning bit, I was thinking maybe the install was in ...
1
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0answers
168 views

EC2 AMI instance store backup grub utility required

Working on backup of whole ec2 volume and image to upload to s3. Using RHEL7 and it internally uses Grub2 as bootloader. EC2 AMI tools requires grub legacy loader and I'm struck up in this loader. ...
0
votes
1answer
346 views

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 ...
0
votes
0answers
129 views

Verify architecture of kernel file

Note: I am NOT interested in the currently running kernel, but on a kernel that I am going to boot and which is in a file in the filesystem. I am going to boot a new kernel. I have prepared grub.conf ...
1
vote
1answer
171 views

Where to install GRUB 2 boot loader?

I have: sda and sdb which partitions is forming mirror RAID md0 md1 md2 md3 During update process, I was prompted where to install GRUB boot loader - on sda, sdb, md's or all together? What ...
12
votes
2answers
785 views

Is there a way to create a “one-time” boot entry in grub?

I have the following issue: I have a small server (Debian based) to which I can connect remotely (VPN/SSH connection). Now I want to change some boot options (in fact I want to migrate my root file ...
1
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2answers
909 views

RHEL 6.4 custom dvd boot issue

I'm creating a custom RHEL 6.4 iso to save myself time while rebuilding standalone hosts. Before I customize the menus and add the extra kickstart files in I have tried a simple unpack -> repack to ...
4
votes
2answers
3k views

How do I redirect the kernel console output on Ubuntu 10.04

When I reboot my Ubuntu 10.04 nodes, I'd like to be able to see the kernel boot messages when connecting to the IPMI interfaces using Serial Over LAN mode (ttyS0). What do I need to do to be able to ...
2
votes
2answers
2k views

Linux RAID 1: How to make a secondary HD boot?

I have the following RAID 1 on a Centos 6.5 server: # cat /proc/mdstat Personalities : [raid1] md0 : active raid1 sdb1[3] 974713720 blocks super 1.0 [2/1] [_U] bitmap: 7/8 pages [28KB], ...
0
votes
3answers
394 views

Grub to boot USB HDD

My machine is using Ubuntu 8.04 (=> legacy grub). It is backed up regularly and I would like to check I am able to restore the backup. This backup includes everything on the system, including /boot ...
1
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1answer
186 views

Regular apt-get update broke grub

I ran a regular update (aptitude safe-upgrade) on my wife's server yesterday (a Hetzner root server with Hardware RAID) and the server hasn't booted properly since. I'm able to boot the server using ...
0
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1answer
378 views

Grub giving Error 2: Bad file or directory when I try to locate the kernel

I'm trying to boot a VM with grub-legacy and I'm getting a grub prompt. If I run root (hd0,0) it says Filesystem type is ext2fs, partition type 0x83, but then if I do kernel /TAB it says Error 2: Bad ...