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Questions tagged [grub]

GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use the GRUB2 tag for questions dealing with GRUB2, a rewritten version.

GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use for questions dealing with GRUB2, a rewritten version.

Usage in Linux Distributions

  • Ubuntu
    • before 9.10 (Karmic Koala): GRUB is the default boot loader
    • 9.10 and later: is the default boot loader
2264 questions
13
votes
4 answers

How can I change the default boot menu option from the GRUB command line?

I have a dual Windows 7/Ubuntu system which I almost always boot into Windows. When I boot into Ubuntu it makes memtest the default boot menu option. While this is annoying, I could live with it if I were able to change the default back from the…
Matthew Murdoch
  • 1,049
12
votes
1 answer

Documentation about rd.lvm, rd.luks, and rd.md kernel boot parameters

I was searching for documentation on how the options rd.lvm.lv, rd.luks.uuid, options work, but could not find anything relevant. The official GRUB documentation does not mention them. After installing Fedora 20 I had the following in…
Daniel Dinnyes
  • 483
7
votes
2 answers

Making grub boot the CD-ROM

Instead of going to the BIOS every time, I'd like to add an entry in grub menu to boot the CD-ROM. Best definitive way of doing this ?
Gzorg
  • 185
4
votes
1 answer

How to hide grub menu on boot and show it only when pressing a certain key?

I want to install linux in a machine, along with windows, but I wouldn't want people to notice. So I thought if there was some way to hide grub menu on startup to make it directly boot from the windows partition, but when a certain key is pressed on…
opensas
  • 305
4
votes
1 answer

How to make a GRUB2 Floppy?

I want to make a GRUB2 floppy disk with an ext2 filesystem that I can use to load something on the disk via multiboot. I'm working on debian unstable, and I don't think it has legacy GRUB on it atm so I was trying to work out ways of going with…
Zevran
  • 141
  • 4
4
votes
3 answers

How to enable boot timeout in Grub2?

I'm am trying to enable the boot timeout selection in grub2 on Ubuntu 9.10. I modified /etc/default/grub: GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=false GRUB_TIMEOUT=2 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo…
cmcginty
  • 3,269
3
votes
1 answer

How to add an item GRUB 1.98?

I am having trouble with GRUB version 1.98. I have been using GRUB 0.97 for a long time and can do pretty much what I want with it. It appears that the last version of Debian (6.0) installs GRUB 1.98. There are probably very good reasons for that…
Michel
3
votes
1 answer

grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist

This is just documentation for a problem I ran into. I was creating a hybrid multiboot USB stick on 64-bit Ubuntu 16.04 using this Arch tutorial and the --target=i386-pc command gave me the following error: grub-install: error:…
kael
  • 213
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2
votes
1 answer

grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible

when boot, I hit "grub rescue" and can boot with "set root=(hd1,gpt1) ..." after boot, ran "sudo update-grub" and then ran "sudo grub-install /dev/sda", but facing error below on /boot/grub/grub.cfg, I can see "set root='hd0,gpt1'", so if I can…
Shawn
  • 21
1
vote
2 answers

GRUB problem‍ or hardware problem‍?

I have Windows XP Professional and Ubuntu Karmic Koala 9.10 on dual boot. I often get a GRUB loading failed error during boot-up. Sometimes, when I try to boot into either Ubuntu or XP, I get a Could not read from source error. Now this is funny.…
Nikit Batale
  • 133
1
vote
2 answers

Unable to load Linux after Windows installation

I installed Linux OS on the PC. After that, I installed Windows 7. Now, I am unable to load Linux again. How to install Grub in Windows 7?
Kamlesh
  • 27
1
vote
1 answer

How to change the partition which MBR points to?

I can not boot my computer, so I use Ubuntu 12.04 Live CD instead. I change the partition of boot loader from sda9 to sda8, so the MBR cannot point to the correct loader. How could I do now? How to change the partition which MBR points to? Thanks.
Kevin Dong
  • 655
1
vote
1 answer

GRUB reading my external hard drives? How to disable it?

At times when I boot my computer, my external hard drives will indicate disk activity before Grub loads. At this stage when the external drives blink, there is a blinking underscore displayed on the monitor so I'm guessing GRUB does this. The…
chaz
  • 322
1
vote
1 answer

GRUB: Error 28: Selected item cannot fit into memory

Yesterday, I had an issue with my laptop: it didn't boot any longer. On startup, grub was started, but not with the normal menu, but just with a command line. When I tried to enter commands (which weren't echoed), it gave me the error mentionned in…
glglgl
  • 1,449
1
vote
1 answer

How do I re-configure grub options

I've searched this topic and I can't find an article with a plausible solution, to my problem. I installed Windows 7 first, with 100gb of disk space. I then created the necessary partitions via Windows. Finally I installed Ubuntu 12.04 on the…
Ash
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1
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