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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ubuntu 12.04 Booting error

i have ubuntu 12.04 downloaded along side my windows 7 sony viao laptop, ive used it for a couple of months, yesterday i decided to boot onto windows then it did something that messed up ubuntu. when ...
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3k views

“hd0 out of disk” / “hd0 write error” (still boots)

I was doing a series of upgrades of my desktop which had 10.04, aiming for 12.04. Somewhere in the middle, GRUB began displaying "error: hd0 out of disk / press any key to continue", but the boot ...
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761 views

How to fix GRUB on dualboot with Windows7 and Ubuntu?

I am a relatively recent user of Linux. I had several releases of Ubuntu installed on my laptop working in dual-boot and never had any issues. Recently, I installed openSUSE because I thought it ...
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361 views

Edit Windows Boot Loader from Ubuntu

I am using Ubuntu 12.10, and Windows 7. I accidentally removed the Windows option from the Windows Boot Loader using EasyBCD. I do not know how to access the windows boot loader configuration files. I ...
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646 views

grub menu resolution problem on ubuntu 12.10

When I cold boot Ubuntu 12.10, the Grub menu font is stretched and the background doesn't cover the entire screen, like it's 640x800 resolution. If I reboot the grub menu is perfect, no font or size ...
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194 views

Boot in virtual console mode with full resolution

I am able to either: 1) Boot into X, switch to virtual console #1 and use it at full resolution or 2) Boot into virtual console mode -only and use them with 80 columns max How can I boot into ...
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416 views

error: no device connected

I did a fresh install of 12.04 by usb and it went fine, worked on it for several days, but one day the browser crashed and i reset the machine, after that I get this error when i boot; error: no ...
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86 views

Two Ubuntus in my grub bootloader

I have a problem: I have Windows 7 installed on my notebook. I wanted to install ubuntu on it. So I did. Then I removed Ubuntu because of several lags. And when I rebooted, it still showed Ubuntu in ...
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2k views

Simple way to rename GRUB2 entries

I have many different Ubuntu versions installed on my HD. I'd like to rename some of their entries in GRUB2 boot menu. I have tried two approaches. 1) Like mentioned in ...
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484 views

Server 12.04 boots to Grub CLI

Yesterday, I rebooted the server and it booted up to grub. Screen says 'Minimal BASH-like .... etc'. I've tried booting to the Server rescue mode from the install disk and tried reinstalling grub. ...
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17 views

Ubuntu 14.04 software update causes system failure and messed up graphics

I allowed the software updater on my Ubuntu 14.04 machine to update various software packages today (1/25/2014). A reset was requested. I reset my machine and it now comes up with messed up ...
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23 views

Dist-upgrade in Ubuntu 14.10 tries to remove grub-efi-amd64

A recent security (?) update in 14.10 Utopic Unicorn caused "apt-get dist-upgrade" in Ubuntu 14.10 to try to remove package "grub-efi-amd64", and replace it with package "grub-pc". I use grub-efi to ...
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16 views

Grub2 enters console instead of showing menu

I installed Kubuntu 14.04 on an Acer Aspire R7 571G. When installing I chose to use the whole hard drive (removing the existing windows 8). Installing was successful, but when rebooting it didn't ...
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80 views

grub menu does not show windows 8 option after installing kubuntu 14.04

I recently installed kubuntu 14.04 on my machine that had windows 8.1 pre-installed.However, after restarting the system the grub menu does not show windows 8 option. I've already tried updating the ...
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18 views

Fresh install. POST is fine, then freezes saying GRUB

To elaborate, trying to boot into Ubuntu for a fresh install. Never get to the install screen. It passes bios POST, then says GRUB, and freezes. Left it sitting for about 10 minutes, no dice. ...
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522 views

Installed Ubuntu 14.10 on MacBook Pro (5,5) without rEFIt or rEFInd, hangs on purple screen

I recently inherited a mid 2009 13" MacBook Pro. I wanted to install Ubuntu 14.10 on the machine rather than OS X. I've previously had success with Ubuntu 13.10 on a 2006 MacBook by booting to live ...
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36 views

Windows Boot Loader Calls Old GRUB Version

I have two hard drives and two GRUB versions. Windows still relies on the old version that I want to remove. How can I make Windows Boot Manager talk only to my new GRUB version. I started off with ...
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19 views

Disabling IRQ #11

I am kind of a noob with linux. I know simple commands like sudo apt-get and things like that. But I have been having problems with my computer. a lot of times I will start my computer and it will ...
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78 views

Fresh install of 14.04 - Gave up waiting for root device

I hope you can help me. I've read many, many questions and solutions to my problem on here, however so far I have been unsuccessful in resolving the issue. The system is a Asrock e350m1, 4GB RAM, ...
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53 views

Grub does not start anymore after removing a btrfs partition

I'm using Ubuntu 14.10. Consider the following setup: ubuntu@ubuntu:~$ sudo blkid /dev/sdb1: UUID="0dde146f-ebdc-472d-83a2-48104e23cb8f" TYPE="swap" PARTUUID="00061e41-01" /dev/sdb5: ...
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36 views

Grub2 does not recognize multiple boot partitions with Ubuntu 14.04 installed on each

I had Ubuntu 10.04 or 12.04 installed on three partitions of my 1T byte hard drive. I decided to upgrade all three and downloaded and burned 14.04.1 to a DVD disk using Brasero for the burn process. ...
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220 views

After Dual-Boot, Starting Ubuntu Ends At Purple Screen

I recently dual-booted my laptop with Ubuntu 14.04 and Windows 7. However, every time I try to start Ubuntu from Grub, it ends at a purple screen and the fan kicks on high. This is also the case when ...
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49 views

grub doesn't work after dual booting win 8.1 and ubuntu 14.04 lts

Just installed win8.1 and Ubuntu 14.04 lts But the grub doesn't show at all When booting.... Also Nothing happens When I press during the booting process. It just loads the Ubuntu as default
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21 views

Installing Ubuntu and get the error cp: write error: No space left on device

I downloaded Ubuntu 14.04 x64 Desktop burned it to my 16gb Sand disk USB drive. I rebooted my PC with this in and it came up with the grub 2 loader. I tried running install Ubuntu as well as try ...
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87 views

Default Grub2 entry doesn't point lastest kernel version + “selinuxfs mount failed” boot error: how to repair?

I installed Ubuntu 14.04 in multi-boot with linux (Mandriva 2011/Grub Legacy). First it seemed to work. But on my first update in Ubuntu, I was "strongly adviced" by the system to update grub and got ...
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33 views

Boot issues on Inspiron M5010 when installing 64 bit Ububtu 14.04. Help!

This is my first time using Ubuntu. I bought a wiped computer from ebay and I'm just trying to install Ubuntu OS. I downloaded the software, formatted my USB to Fat 32. I used UUI and Yumi both to ...
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56 views

Bootloader Install Failed Ubuntu 14.04

I tried to install Ubuntu 14.04 on my SONY VPCEL15EN, Every thing worked fine but at the end it shows that Bootloader Install Failed. Now I have 3 options 1 to install somewhere else 2 continue ...
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43 views

update-grub fails on lvm cryptoroot

Disclaimer: I'm running this server now but I did NOT install it. I have two disks connected to an Intel Hardware Raid Controller running in RAID1. On top of it there is a fully encrypted 12.04 ...
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73 views

grub2: system restart after menu (nvidia, crypt)

I got a ThinkPad T410i and I installed Ubuntu 14.04.1. Grub is showing up but if I select any Ubuntu boot option the system does a reboot. My first search brought up to add nomodeset because of the ...
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57 views

Update GRUB with encrypted LVM on second volume/drive?

On one machine I have an encrypted LUKS container around an LVM on /dev/sda that I can boot into. On the same machine is a second drive with an encrypted LUKS container around an LVM on /dev/sdb (that ...
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120 views

Ubuntu 14.10 taking a long time to boot

So, this has only started happening about a week back for no apparent reason. Ubuntu takes almost 4-5 minutes stuck at the purple Ubuntu screen for no apparent reason. Furthermore the GRUB 10-second ...
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46 views

After selecting Grub entry, screen switches to power save

After I select an entry (Ubuntu) from the Grub menu, the screen goes to power save mode. I could eventually get the screen asking me for the HDD encryption password by pressing Alt-F1 and then Alt-F7 ...
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49 views

Ubuntu signed Grub do not prefix tftp-root directory for tftp requests

$ lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 dpkg -l grub-efi-amd64-signed Desired=Unknown/Install/Remove/Purge/Hold | ...
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151 views

How to add software RAID-1 to an existing non-RAID system?

I couldn't find any tutorials for converting a non-RAID system (Ubuntu 14.04 in my case) into a disk-level RAID-1 system after installing a second disk (/dev/sdb) Is the following correct? sgdisk ...
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48 views

MacBook Pro 1,1 Not Detecting Grub?

I just installed Ubuntu 14.10 on my MacBookPro 1,1. The installation went okay, however GRUB does not work. It's not even detected. I can not bless the Linux disc due to a wiping of OSX. I do not ...
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112 views

Plymouth not launching on startup?

So I recently upgraded to Ubuntu 14.10. Steam started having the "GLX context does not support direct rendering" issue, so I decided to go into Software & Updates to switch my graphics driver to ...
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24 views

Where to install Grub on a RAID0 HDD?

Where do I install Grub ? Here are the choices I have /dev/mapper/isw_difechbgae_Volume0 Linux device-mapper(striped)(3.0TB) /dev/mapper/isw_difechbgae_Volume0p1 Linux ...
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45 views

Whatever I type in the terminal I get prompted to install grub?

Ok, whatever I type in the terminal I get the message from the SS after 3sec, and it just goes in a loop, my grub is working fine and I have no idea why this is coming up. I installed Ubuntu 14.04.1 ...
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0answers
185 views

Monitor connected to VGA1 went blank!

I have been able to work for the last 3 weeks on two monitors on a Xubuntu 14.04.01 without a problem. All the monitors have been detected nicely and everything run smoothly. One of the monitors is ...
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0answers
31 views

Accidentally Formatted Red Hat Linux Patition : Getting Grub command prompt

I have 2 disks on my PC. Disk 0 contains Windows 7 and Ubuntu Wubi installation and Disk 1 contains Red Hat Enterprise Linux Installation. When i used to turn on my PC, i was by default taken to a Red ...
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326 views

Ubuntu BusyBox initramfs Error 14.04

Suddenly after shutting down Ubuntu and when reopenning, I get prompted to one shell of BusyBox. I only had a set of options in help there. I tried to follow this solution: Boot drops to a ...
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492 views

ERROR: No boot disk has been detected or the disk has failed

I've acer-pc which had at the beginning installed oem windows 8 or 8.1 x64. Later I wanted to install custom ubuntu. I checked oem/normal/x86/x64, other windows installations. I've installed os even ...
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0answers
100 views

Installed Ubuntu 14.04 after Windows (dual-boot) - Windows now no longer boots up

I recently installed Ubuntu 14.04 after several failed attempts at other distributions running alongside Windows 8.1. I have managed to successfully install Ubuntu 14.04 alongside my Windows 8.1 ...
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134 views

core.img cannot be found

I get this after trying to reinstall grub using boot-repair: Grub2 (v1.99-2.00) is installed in the MBR of `/dev/sda` and looks at sector 778209992 of the same hard drive for `core.img`, but ...
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137 views

Can't enter Ubuntu 14.04 with AMD R9 290 (Black Screen)

I've recently installed Ubuntu along side my Windows 8.1 on my HDD. The moment I tried to boot I got a weird purple outline, followed by a black screen and monitor signal loss. I entered grub ,using ...
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113 views

Boot repair on raid after crashed system-upgrade

I found it difficult to find an answer to this problem without specific step by step advice. During an Ubuntu system update an error occurred and it froze my PC. After a forced shutdown I encountered ...
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0answers
115 views

Installing Ubuntu Server 14.04 LTS on a MacBook Pro 7.1, unexpected shutdown happens

I'm trying to setup a webserver on an old MacBook Pro to be able to securely, and remotely, manage our home network stuff. The end goal is to be running Ubuntu Server 14.04 LTS, running an apache2 ...
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58 views

How to use Fn+F5/F6 adjust the backlight

My NB is Asus N500JK and OS is Kubuntu 14.04. I try modify /etc/default/grub file. GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=" then update-grub After reboot, it can use Fn+F5/F6 adjust ...
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42 views

Update from 12.04 to 14.04 broke my grub and I couldn't recover it

I am new Ubuntu user. I had to reinstall one older computer so I decided to put Ubuntu 12.04 on it. After installation I've tried to upgrade it to 14.04 and upgrade failed. I've even tried with DVD ...
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261 views

Can't boot Linux from an external USB SSD drive

Windows 7 OS. Is there any difference between Linux Live CD and Linux installation on an external USB SSD drive in point of view of boot? I can boot Linux LiveCD without a problem when set boot order ...