GRUB2 is the next generation of the GRand Unified Bootloader (GRUB). Ubuntu has used GRUB2 as the boot loader since 9.10 (Karmic Koala). Commonly referred to as simply "GRUB".

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How do I get GRUB to install on a RAID array?

I am trying to build an Ubuntu desktop machine with RAID array, and am having trouble with the installation of GRUB. The 2 10GB HDDs are partitioned using sgdisk (invoked by a script to ensure ...
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33 views

os-prober and update-grub can't see/find working Windows install

I have installed 12.04 next to a Windows 7 install, on a partitioned 3 TB hard disk. If I use F12 during boot to review boot options from the BIOS, Windows 7 and Ubuntu boot normally, but the Ubuntu ...
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27 views

How to set a password on recovery mode in GRUB

Any one can reset the root and other user's password by going in recovery mode. SO I want that on the recovery option GRUB require a password to enter in recovery mode. But user can login UBUNTU ...
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20 views

Can't see grub after running boot repair. Please Help!

I've a machine with Windows 8 and I've just upgraded from Windows 8 to Windows 8.1. After this I couldn't see the grub while booting. So, I ran boot repair, but still it didn't work. ...
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27 views

Black Screen with “Input signal out of range” message, after AMD graphic driver installation [13.10]

I recently installed Ubuntu 13.10 64bit alongside Windows 7 64bit, and both ran fine. Then I installed AMD graphic driver for my video card radeon R9 270 following the 3rd(manual) procedure given in ...
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update-grub Not Respecting Preferences from /etc/default/grub

Following the advice from an answer to How do I remove or hide old kernel versions to clean up the boot menu or free space?, I found myself having to put up with the GRUB boot menu every time I ...
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17 views

Replace Mac OS X boot loader with Ubuntu

Currently, I have my MacBook Pro's SSD filled with a Mavericks installation, and after some frustrating hours, an external HDD loaded with Ubuntu 13.04 (soon to be 13.10). As of now, the only way for ...
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65 views

How to add ubuntu 13.10 to windows boot manager when easyBCD will not work?

Basically I am having difficulty adding Ubuntu to my windows boot manager. I have downloaded easyBCD and followed the steps to add it yet it insists that the files are not there. Here are the steps ...
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19 views

How to prevent my Windows on the other HDD from being added to the boot menu when doing update-grub?

It seems that when sometimes I do apt-get upgrade, update-grub is automatically invoked. My problem is that I have two HDDs on my laptop/PC. Ubuntu, as well as a 64-bit Windows 8.1, is installed on ...
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44 views

LightDM will not start & xserver problems Ubuntu 12.04

I've been having an issue with resume after suspend for the past week and a half or so. After waking up the lock screen would be displayed, but I would not be able to type in my password. My ...
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82 views

Windows 7 hangs at grub's purple screen when dual booting

I have installed a new laptop (Lenovo Z510) for dual boot Ubuntu 12.04 and Windows 7 64 bit. After several trials it now works, but I have a strange effect. I always enter the Grub purple screen ...
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21 views

Changing kernel in a system not booting

I have a dell inspiron laptop and have just installed 12.04. The system hangs on boot after 'Switching to clocksource TSC'. I've searched all the questions here and had no luck changing bios ...
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27 views

Copy Live CD to partition and add it to GRUB

I would like to keep the Live CD as a separate partition (read only if possible) so that I can use it to boot my computer should the main partition be damaged. I could then restore the main partition ...
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37 views

Why can't I boot into Windows boot manager from GRUB?

I just recently, recently being last night, installed Ubuntu 13.10 on my laptop for school. I really want to learn about Ubuntu and how to use it. The main problem I am having is trying to start into ...
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52 views

LUKS decryption step missing during boot after upgrade

I upgraded my 12.10 installation that was residing on an LUKS encrypted EXT4 root partition. I did that with the 13.10 Iso standard on a DVD. I booted into the Test System, successfully mounted the ...
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19 views

Unable to launch grub customizer

grub-mkconfig couldn't be executed successfully, getting the following error message: /usr/sbin/grub-mkconfig: 7: /etc/default/grub: Grub_saved: not found
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41 views

Why am I unable to install Grub Customizer?

I am using Ubuntu 13.10. mariaeugenia@MARIAE-UBUNTU:~$ sudo add-apt-repository ppa:danielrichter2007/grub-customizer [sudo] password for mariaeugenia: This PPA contains the latest release of Grub ...
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35 views

GRUB USB not working in windows 7

I have just re-installed Windows 7 in EFI mode (getting everything working in a new EFI enabled mode) and used boot-repair to get GRUB working again. However when booting into Windows, there is a ...
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195 views

How to fix “smpboot: Booting Node 0, processors #1” - will coreboot or UEFI help?

I am running a dual boot Windows 7/Ubuntu 13.10 on a HP dv7t-4100 PC, with grub2 reinstalled through boot-repair in Linux. Occasionally I cannot boot into Linux - and even have trouble in Windows. ...
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30 views

Grub Error, can't go to BIOS

Whenever I power up the computer, it types a little message "system resuming". Then it comes up with the following message. error: unknown filesystem grub rescue > I tried to pull out the ...
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53 views

ubuntu&win8 dual boot from ssd. Grub sometimes works, sometimes not

The situation is quite complex. I have a thinkpad x230. I recovered windows 8 to a msata SSD, and install unbuntu 12.04 in the same SSD. I have used boot-repair to fix the boot problem(By the way, it ...
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33 views

Ubuntu won't shutdown EVER by any means, just restarts

So, as the title says, my computer won't shutdown, it just restarts. Here's a list of the things that I've tried: Use 2nd bios Boot from Ubuntu USB. Shutdown from Windows 7. Sleep in Windows 7. ...
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29 views

GRUB error with RAID when other HDD's exist

I had this exact issue with Debian. Grub has no issues loading at all as long as all of my HDD's are turned off except for my hardware RAID array. When there's more than just my RAID, it fails to ...
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83 views

Unable to boot Ubuntu after updating from Windows 8 to 8.1

I was having Windows 8 and Ubuntu 12.10 (dual-boot) on my laptop. Recently I updated Windows 8 to 8.1. From then on when starting the system I cannot see the grub (directly boots into windows). I ...
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26 views

When I click install xubuntu I get a black screen saying empty security header

sometimes It goes past this and lets me install but it just ended like this http://i.imgur.com/ZXmAKok.jpeg I am installing with a usb stick and this is a set up for a mining rig :( Please help
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370 views

xubuntu 13.10 boots to black screen after grub

I know this is a common theme, but all of the other similar threads I've found were either based on a clear change (e.g., upgrading), or were unsolved. I'm a relative newcomer to linux, but have a ...
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171 views

Windows 8 + Ubuntu 13.10 + boot-repair stuck

I bought a laptop HP Envy Premium with Windows 8 on it. I wanted to install also Ubuntu 13.10 on it. I partitioned from windows the disk creating space for Linux. Then booting from a live ubuntu on a ...
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27 views

Install fails for HPZ820

I'm trying to install Ubuntu 13.04 desktop version on a HP Z820 machine. No dual boot - only Ubuntu on a clean system. The installation fails. I get the message "grub install dummy failed. This is ...
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35 views

Upgrade from 10.04 to 12.4 shutdown in the middle of installation, and now i cant even run it live

I have had ubuntu 10.04 until yesterday, when my dad got home with a disc that has 12.4 on it, i quickly put it into the laptop and started the install, and everything was going fine, but apparently ...
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162 views

using GRUB to boot a linux system on a different device?

I bought a new SSD drive with the idea of running my Ubuntu system on it and leaving the other two SATA drives (which are configured in a RAID array) for storage only. Ubuntu installed with no ...
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68 views

update-grub doesn't help boot new kernels on external drive

I asked a question in ubuntu forum which has not been solved yet: http://ubuntuforums.org/showthread.php?t=2200335&page=2 To recap briefly, I have an external drive that I boot from different ...
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139 views

How to configure GRUB loader during apt-get upgrade on Ubuntu 12.04

I have a box with Ubuntu 12.04, and just did a apt-get upgrade. I'm presented with a dialogue to update my GRUB bootloader, but with the following message: The GRUB boot loader was previously ...
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49 views

No GRUB menu Lubuntu 12.04 PowerPC, only text

I installed Lubuntu 12.04 on my iBook G4 over OS X 10.4.11. I had to manually add the b43 internet driver, but that and the rest of the installation went fine. I'm now updating. However, when I ...
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24 views

Trying to clean up my MBR's

I curently have at least two Grub's installed on my HD. Iḿ trying to use a couple of tools to configure the one currently in use (I guess that is the one on /dev/sda). More precise, I want to load ...
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57 views

Dual boot / Win 8 and Ubuntu 13.10/Where to put the grub

can anyone help me with getting this to work ? I have two physical SSD drives(Samsung and Kingston) - on the Samsung one I have Windows 8 installed , Kingston is free and formatted and It's ...
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264 views

[Help/12.04 Alert! /dev/mapper/… does not exist! Dropping into a shell!

I'm having an issue with my 12.04 LTS install. I plugged in my phone and turned on my computer and noticed that it wasn't accepting my password to decrypt the volume since I had done the Full Disk ...
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24 views

How to fix broken upgrade on Ubuntu Server on USB thumbdrive with Encrypted LVM

Oh woes is me: I decided to do a do-release upgrade on my workstation and managed to bork my production workstation. My setup was as follows: 32GB usb key that Ubuntu Server booted from - this ...
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65 views

How to boot into a command line ? (tty0)

I need a little help on xubuntu 13.10, I would like boot into the tty1 (command line) instead of the default login manager, I've tried to type into the grub configuration file with changing the line « ...
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61 views

I'm stuck in Grub!

So I'm trying to get me fathers old DELL Inspiron 9200 laptop to work again, and I decided to install Lubuntu on it because I don't know much about Linux other then it's free, and Lubuntu is extremely ...
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64 views

TabletPC: OS selection in GRUB using volume and Windows buttons

I've bought an Acer P3-171 tablet and installed Ubuntu Precise Pangolin alongside with Windows on it. Unfortunately, I only can choose the OS to boot using an external hardware keyboard. I am a ...
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355 views

GRUB_HIDDEN_TIMEOUT and GRUB_TIMEOUT Do Not Accept 0 Value

I am not on a duel boot system, and do not want to view the GRUB boot menu. I have used methods that have worked in the past to change /etc/default/grub to accomplish that ends, but they have not ...
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33 views

GRUB issue with 12.04 installed on WD Passport

Having trouble getting Ubuntu to boot from my external hard drive. Installed fine from live CD but upon booting I got "error: unknown filesystem" and it gave me a grub rescue> prompt. After a bit of ...
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132 views

Endless / infinite boot with HP Mini 2140 and Lubuntu 13.10

I am really a linux/ubuntu newbie and can't solve this issue. I installed Lubuntu 13.10 on my old HP Mini 2140 netbook. It's running Windows XP and I gave Lubuntu 30 GB of the same hard disk drive. ...
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21 views

Can I have one OS using Legacy (windows 7) and one os using UEFI (ubuntu)

I want to dual boot Windows and Ubuntu. I was wondering if I installed Ubuntu in UEFI and Windows in Legacy if I could avoid the grub menu and just switch BIOS settings when the other OS was needed.
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116 views

Grub superuser password is required for login on 13.10

According to this documentation: https://help.ubuntu.com/community/Grub2/Passwords, I am supposed to be able to just set the superuser password to protect the grub entries. Why is grub asking for a ...
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31 views

problems after installation in a windows 8 preinstalled computer

When i am installing ubuntu 13.10 it did not find any operating system in my computer,so i did the installation using something else by creating (ext4 \ for 30gb),(ext4 \boot for 200mb)and(swap area ...
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69 views

Change default bootloader to Grub2

I had changed the bootloader to Windows using EasyBCD. I had added Grub2 as one of the boot options via this. Unfortunately, when I tried to boot to Grub2 I got the error "NST/AutoNeoGrub0.mbr is ...
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247 views

Can't boot into Windows 8 after boot repair

I have a Lenovo Y510P laptop and managed to get Windows 8 and Ubuntu 13.10 dual booting. But then after grub was updated, I had to run boot-repair and now I can't boot into Windows. When the computer ...
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87 views

Bootloader issue on dual-boot

First of all I would like to mention that, I'm completely aware of the duplication rule of this forum and this post has been made only after due research on the topic. Problem I dual-booted a ...
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39 views

Black screen with solid cursor

Ok, so I've searched everywhere, I've done the grub repair a few times with different options and even re-installed it a few times. After a successful install (i verified the disk) it runs through ...