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 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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200 views

Unable to decrypt disk on normal Lubuntu boot

I'm having trouble starting up my system. I use VirtualBox to run Lubuntu 14.10 on Mac OS X 10.10.1 host. I have used the built-in disk encryption available when installing (L)Ubuntu. When it boots ...
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79 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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634 views

Error calling EVIOCSKEYCODE

Using 14.04, I have the following error displayed when booting up: Error calling EVIOCSKEYCODE It doesn't cause any problems with the system, but I would still like to remove it. Now, I managed ...
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222 views

Need to remove GNU GRUB version 2.00-19ubuntu2.1

I originally posted a question about removing Ubuntu and GRUB from a dual boot system. This is what my partition map looked like at the start: My question was marked as a duplicate by moderators, ...
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115 views

kernel panic on boot

I'm having some trouble booting ubuntu 14.04. The most weird thing is that after the kernel panic error shows up, if I restart the laptop, grub appears (not showing up when the panic occurred), and ...
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2k 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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194 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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736 views

boot XEN under UEFI-only BIOS

Is there a way to get XEN 4.4 booting from UEFI mode BIOS? My AMD64bit laptop does not support direct CSM/legacy boots. A nasty workaround has been to boot from a specially made USB pendrive with ...
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132 views

Black screen on bootup

I've had a problem since loading ubuntu alongside my windows install now. I'm running 14.04 and using Gnome 3.12 shell and Lightdm. When booting up the Ubuntu splash screen looks normal and pushes me ...
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171 views

setting of GRUB for two Linux distributions installed to two separate hard disks

I installed a second hard disk to my laptop so that I can test on new Linux distribution without trashing my working one. I did the following: Installed Linux Mint 15 to my first drive sda and use ...
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121 views

Both Windows 8.1 and Ubuntu not booting after installing Ubuntu 14.04

I had installed Windows 8.1 in my Dell Inspiron 5521 in Legacy Mode. I then tried installing Ubuntu 14.04. The installation was successful. But after rebooting, I was unable to boot into any OS. While ...
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150 views

Unable to boot after update

After a update, Ubuntu won't boot anymore and gives: error: could not read file. If I'm fast enough to press a button to continue, I get Kernel panic - not syncing: VFS: Unable to mount root fs on ...
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1k views

Stuck in GRUB Rescue Mode, all partitions -> “Unknown filesystem”

I somehow messed up my laptop... I have a dual boot machine with Ubuntu 14.04 and Windows 7. The Ubuntu OS has been installed a couple of days ago and I was encountering an annoying bug: when booting ...
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621 views

Error occurred while mounting /boot

I wanted to remove Windows 7 and Ubuntu 13.10 from my laptop and just create one partition for Ubuntu 14.04, but this seems to be more difficult then I thought it would be. Installation seems to go ...
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548 views

OS-prober is taking a really long time

Any time I update my GRUB configuration or install a kernel update that has the update manager update my grub configuration, the os-prober part of the configuration hangs for sometimes 10-20 minutes. ...
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659 views

How to get rid of grub menu after boot?

Here is my /etc/default/grub: # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true ...
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255 views

How can I remove Ubuntu record from my boot list?

I've installed Ubuntu 12.04 on an external USB3.0 drive. I selected sdb (the usb stick) as grub point and created a new ext4 partition as root on sdb1. Everything went very well and I could either ...
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394 views

How do you repair a non-booting Windows 8.1 installation after updating to Ubuntu 14.04?

I have dual boot set-up with Windows 8.1(original OS) and Ubuntu 14.10. Recently, Windows stopped booting. I am presented with a 'Recovery' screen with the Error Code: 0xc0000225. Windows stopped ...
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374 views

Ubuntu 13.10 continuous beeping

I'm using Ubuntu 13.1064b on a Dell Inspiron N5010. Sometimes when I boot into Ubuntu, I get a continuous beeping noise on my sound card output. My laptop's internal speakers stopped working a long ...
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288 views

Computer won't boot after shutdown/reboot

I currently have a Toshiba Sattelite C660D which dual boots Ubuntu 14.04 (had same issue with 13.10) and Windows 8. Every time I shutdown or reboot my laptop from Ubuntu, I can only get it back on, ...
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761 views

SSH update to 14.04: The disk drive for / is not ready yet or not present

I am not able to restart my Ubuntu server after upgrade from 13 to 14.04. What can I do to make things work again? I tried to upgrade my server over ssh to ubuntu 14.04. When the installation ...
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88 views

Is there any kind of relationship between Windows and Ubuntu installation?

I've just experienced incredibly weird behavior in Ubuntu. I've written lately some questions here regarding my shitty tablet not working correctly in Ubuntu 13.10 . I've left it that way having it ...
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169 views

Can't boot after Kubuntu 13.10 installation with Windows 8 Dual Boot

I installed Kubuntu 13.10 with Dual Boot Windows 8.1 via USB. After reboot i got the prompt: Minimal BASH-like line editing is supported I already tried to fix it with boot-repair, but nothing ...
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57 views

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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362 views

Installing Ubuntu on external hard drive (boots to black screen)

Hey everyone this is my first post here on the askUbuntu forums. I've been an avid Linux user for over a year now but by no means an expert. The problem I'm facing is one I have not been able to ...
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246 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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4k views

WIndows 8.1 not showing up on GRUB during boot up. Windows 8.1/Ubuntu 13.10 dual boot

I have recently installed Ubuntu 13.10 along side Windows 8.1 on my Laptop. After the install of Ubuntu and restart, everything worked fine. Windows 8.1 showed up in GRUB when the PC restarted to ...
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438 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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2k views

Ubuntu UEFI Windows 8.1 Dual Boot

I have installed Win8 and Ubuntu side by side before in the past and had issues with booting which were fixed perfectly the first time using boot-repair. This time, I installed Win8.1 and Ubuntu with ...
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228 views

Broken chainloader after cloning drive

I have a multiboot system with Windows XP and Ubuntu 13.04. I use Grub 2 to boot from the MBR to a chainloader in the Ubuntu partition, and the chainloader gives me the option of booting to XP or ...
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71 views

Dual Partion windows not working ?

I originally set up Ubuntu "along side" widows(Vista) and realized it was done though wubi after I tried to set up a VB and didn't have enough room. I then repartitioned the HD and did a stand alone ...
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331 views

Kernel panic after updating to linux kernel 3.8.0-32

I'm getting the following errors after upgrading to the newest kernel: VFS: Cannot open root device "UUID=1f09d896-51ad-47b8-8e62-c289906e527a" in unknown-block(0,0) Please append a correct "root=" ...
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0answers
965 views

Attempt to read or write outside of disk hd0 problem

I installed ubuntu 13.04 on a 16GB usb memory (full installation, not live usb) and boot it with vmware player 6 + plop under windows 7 64-bit host. To avoid windows format complain, I created a ...
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252 views

Dual Boot System: Windows 8 starts up with black screen if started from GRUB

i don't even know if this problem has anything to do with GRUB or Ubuntu. It could be just a hardware problem. my problem started after i installed my new graphics card (Radeon HD7970). Everything ...
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283 views

Issue with booting/rebooting behavior when using a bootable SD Card

So, here's what I have: A bootable SD Card, with a minimal Ubuntu installation. A bootable USB stick, with exactly the same filesystem image. A Shuttle PC (much like the XS35V2 Digital Signage Media ...
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388 views

How to fix Grub loader that hangs and waits for user with read only root partition?

I am trying to create a set of Ubuntu 12.04 slave systems that have a read only root partition and a small read/write partition mounted for a single user. These systems will be used for a short job ...
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245 views

Nvidia Optimus / Purple screen at boot

I have a ThinkPad T430 with an Nvidia NVS 5400M dual booting Raring and Windows 8. If I boot directly into Ubuntu or reboot Ubuntu then the system boots with a purple screen directly after grub. It's ...
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875 views

How to boot Ubuntu 12.04.2 LTS with UEFI, Nvidia graphics and dm_crypt encrypted LVM

I've just gotten 3 new systems, with Nvidia GTX 660 graphics, Z77 chipset and AMI UEFI BIOS. I've installed Ubuntu 12.04.2 LTS from the Alternate Installer in order to install onto an encrypted LVM ...
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0answers
91 views

grub customizer broken after changing grub backround image option

As you can see from the paste I have a dual boot laptop with win7 and Ubuntu 12.10. The grub broken after messing around with background picture with grub customizer.I didn't proceed to any change ...
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459 views

ATI HD 6320 ASUS Brightness doesn't change

When i press Function + [F5 or F6] to increase or decrease the brightness, the adjustment display on top right pops out and the slider moves but the screen brightness remains the same. i've done ...
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0answers
203 views

Setting up a bootable usb iso

So, I've got an ext3 partition on a removable USB device. Its /dev/sdb1 on my system. After mounting this partition: sudo mount /dev/sdb1 /mnt/USB I install grub on it: sudo grub-install ...
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0answers
1k views

Can't access grub menu by holding shift

I need to be able to set the nomodeset flag for the system to boot correctly, however pressing and holding shift after the boot screen does not give me access to the Grub menu. I need to point out ...
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0answers
128 views

Attempt to install Ubuntu 12.10 from Windows but get GRUB instead

I have a Ubuntu ISO that I have just downloaded from ubuntu.com and used the Windows Installer (Wubi) to install Ubuntu, but when it boots, instead of Ubuntu I get some GRUB ... something. I have ...
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0answers
1k views

Installing 12.04LTS Server on a Fake RAID10

Scenario Install Ubuntu 12.04LTS Server on a RAID10 with boot on a RAID1. 4 - 2Tb SATA Hard Drives 3 Partitions (/boot, /, and swap) boot (256Mb from each disk) setup in RAID1 /dev/md0 partition ...
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334 views

Grub Customizer does not start

I recently installed Ubuntu 12.10 as a second OS dual-booting with Windows. And by default I need to boot to Windows. So, I decided to install Grub Customizer through the terminal: sudo ...
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0answers
64 views

Change Bootloader title to include bit

Secondlife runs on 32 bit linux. I've tried WINE, Crossover, and installing the 32 bit libraries. Nothing has worked so now I'm having to install a 32 bit copy of Ubuntu as a second partition just to ...
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485 views

Grub Customizer Error on startup

I cant start Grub Customizer in ubuntu 12.04 after updating the kernel: exception '15AssertException' with message 'found unexpected file on path: /etc/grub.d/10_linux' in ...
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0answers
421 views

when installing /boot inside a lvm group, where do I install the boot loader?

I am setting a personal file/cloud server based on ubuntu server 12.04 and owncloud but there are certain things about the partitioning that I can't get my head around... Let's say for example I want ...
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760 views

How can I fix this error file /boot/grub2/i386-pc/normal.mod not found

I recently replaced Windows 7 with Ubuntu 12.10. I chose the option to replace windows so I am not dual booting. I am currently running off a flash drive since after I tried the install the error ...