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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RAID1 “conflicting device node” message on startup

I'm dual booting Win8.1 and Ubuntu 14.04 (Gnome Classic). I have RAID1 set up (on Asus Z87-A motherboard) with Win partition, Ubuntu partition, and NTFS partition for data. On Ubuntu startup, I see ...
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46 views

Recover Ubuntu 14.04 Encrypted Install

I have an encrypted install (Full drive, not only home directory) of Ubuntu 14.04 on a 1TB SSD. I do know the passkey to unencrypt everything. It's just a matter of finding the files now. Here's what ...
4
votes
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58 views

Dual boot Windows 10 & Ubuntu 16.04 — blank purple screen of death when booting Windows!

This is on my Dell XPS 9550 laptop with 512GB Samsung P951 NVMe SSD. I first installed Windows 10 and it boot up just fine. Then I shrinked the volume for Ubuntu and installed it via Live USB ("...
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2k views

Reinstalling Grub - shows no volume groups found, how do you fix this?

I have a full backup which I had restored onto a new built system on Ubuntu 12.04 The backup did not include /dev /proc /sys folders. Upon rebooting, the grub show the following errors error: no ...
3
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0answers
24 views

Shutdown Freezes on Ubuntu 14.04 (2015 Macbook Pro Dual-Boot)

I recently did a dual-boot on my 2015 Macbook Pro Retina. I opted not to use rEFInd, instead selecting sda1 (/boot/efi) as the mountpoint for my boot partition. I cannot shut down my computer without ...
3
votes
0answers
58 views

Can I use a 64-bit system along with the 32 bit version of EFI?

Recently, I set up an Ubuntu Kodi-based home theatre system on a 2007 Intel A1176 Mac Mini. This is a 64-bit system with firmware that expects a 32-bit EFI. After some experimentation, I created a ...
3
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108 views

Help Ubuntu and Windows won't shutdown

I've decided to install Ubuntu 16.04 along with Windows 10 on my Dell Inspiron 15 3000 Series. Now both OS's can't shut down properly. What is looks like is that all processes are killed during the ...
3
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0answers
32 views

No ANG1 Error when booting from Ubuntu in a dual boot with Windows 10

I dual booted Windows 10 and Ubuntu 14.04. I used EasyBCD to get to the Grub menu where I could select which OS to load. It was all set up and worked. Recently, however, I tried to boot it up again ...
3
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73 views

Just installed Ubuntu but booting error displayed “Insert system disk in drive.”

Until a few days ago I was mainly a Windows user, since I couldn't install linux via dual boot on my computer. I tried everything several times, did everything right, but the problem was that after I ...
3
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0answers
73 views

How can I begin to track down this Wi-Fi problem?

This is not your run-of-the-mill "what's wrong with my Wi-Fi" question, I'll guarantee you that... I inherited a Lenovo Ideacentre Stick 300 and have been trying to get Windows 10 off of it and ...
3
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129 views

Booting from USB Grub 2 Invalid EFI

This is my first time on the forums here, but I recently installed ubuntu 14.04 and would like to re-install it via USB. I have been trying for about two days now to use the grub menu and have looked ...
3
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0answers
102 views

Cannot type disk decryption password during boot

The GUI loads to input the decryption password, but when I type, the characters appear in the top-left of my screen, as though I was typing at a console without a command prompt. Forcing power-off ...
3
votes
0answers
149 views

Ubuntu 15.10 installed on MacBook won't shut down properly

I have installed Ubuntu 15.10 on my MacBook using rEFIt, and the problem is now it won't shut down properly. Every time it reaches the very last part where it's about to power off and then just hangs. ...
3
votes
0answers
520 views

update-grub fails /usr/sbin/grub-probe: error: failed to get canonical path of '/cow'

The HD of my computer (/dev/sda) has 3 partitions (/dev/sda1, /dev/sda2, /dev/sda3), each containing a copy of Windows Vista Ultimate (restored from a Clonezilla partition image). Using an Ubuntu ...
3
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218 views

Ubuntu 14.04.3 LTS not Starts GUI

I installed Ubuntu 14.04.3 LTS on my HP Pavilion G4 1115br and when I start it does not load the GUI: Ubuntu 14.04.3 LTS problem in not Loads GUI - Part 1/2. After I shut it down manually and start ...
3
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0answers
106 views

How to prevent switch to text mode during boot

I'm trying to get a full graphical boot in ubuntu. That is using burg/grub in graphical mode and launching the kernel directly in graphical mode, without switching to text mode and then back to ...
3
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76 views

How to prevent the people from using 'e' to change the 'config' in grub?

I'm really stumped this time because, I've tried to configure the 10_linux & the 00_header the /boot/grub/grub.conf I've tried it many times, but unable to protect it with Password Please do ...
3
votes
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220 views

/dev/sda1 /boot corrupted

I am running a Ubuntu 14.04 on an IBM-Thinkpad X61 tablet (no Windows dual boot) and it seems I have corrupted my /dev/sda1 /boot. Symptoms: When I login to home window, a "System Program Problem" ...
3
votes
0answers
510 views

iMac will not boot OS X after installing Ubuntu

I installed Ubuntu alongside Mac OS X on my iMac, following HowToGeek's tutorial. Whenever I boot, I get GRUB with the following options: Ubuntu Advanced Options for Ubuntu Mac OS X 32-bit Mac OS ...
3
votes
0answers
496 views

cannot add memtest86 in Grub menu

I had already seek solution in: How can I add the Memtest86+ options back to the Grub menu? Memtest86+ options are missing in Grub menu However, they still can't solve my problem... what drives me ...
3
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664 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 ...
3
votes
0answers
1k 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 ...
3
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0answers
17k views

A Guide to Install Ubuntu 13.04 using a RAID 0

Getting the error: Unable to install grub in /dev/sda? Because you are using a BIOS/fakeRAID0? If you manage to find this thread consider yourself in luck. I spent the last 48 hours trying to figure ...
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95 views

How to modify which keys make the grub menu appear

Sometime I need to access grub. I have the timeout to 0 but I can still call the grub menu by pressing ESC or leaving SHIFT pressed. What I want is to change that so for example, to get the grub menu ...
3
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589 views

Xorg can't find screens

I recently installed Ubuntu 12.10 on my laptop. It installed successfully, but whenever I boot into it, after the GRUB screen I get a text TTY. I can log in with that and enter command-line commands. ...
3
votes
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73 views

Three file not found errors before Grub menu appears - caused by 12.10 upgrade

After just upgrading to 12.10, I see three Error: File Not Found lines flash up on the screen at the very start of bootup, just before the grub menu appears. The system still works properly after that....
2
votes
0answers
56 views

Select at boot time, from Grub, Nouveau or Nvidia driver

I have a laptop MSI GS60 6QE; CPU is Skylake I7-6700HQ and GPU NVIDIA GTX 970. I had installed Ubuntu 16.04 on it and is working quiet good. I've installed NVIDIA 364.19 driver from ppa.launchpad.net/...
2
votes
0answers
40 views

Burg installing

I tried installing Burg to make my dual boot look better. So, I followed these instructions up to the part where it says: "BURG found! Do you want to configure BURG instead of grub2?, click Yes.". ...
2
votes
0answers
50 views

Problems installing Windows 10 after Ubuntu

I know that the recommended way of dual-booting is Windows first, Ubuntu second but when I purchased my computer, I got fed up with Windows' crap way faster than I expected so I impulsively clean ...
2
votes
0answers
981 views

black screen on Ubuntu 16.04

I recently upgraded to Ubuntu 16.04 from 15.10. When I restarted the system, it came up with a black screen. After searching around, I determined that the problem was with the lack of a proper ...
2
votes
0answers
73 views

Error unknown command hwmatch

I'm getting "unknown command hwmatch" message on each boot after I installed Ubuntu 16.04 following this steps: https://gist.github.com/umpirsky/6ee1f870e759815333c8 in order to setup RAID0. Special ...
2
votes
0answers
30 views

Device names for internal\external HDDs when installing on external USB HDD

Really sorry to bump in with a silly question, please bear with a newbie. I want to install Ubuntu on an external USB HDD attached to a pre-UEFI BIOS PC with 3 internal HDD/SSDs. The installation ...
2
votes
0answers
51 views

Ubuntu won't boot after booting into Windows 10 once

First I installed Windows 10 on my system. Then I installed Ubuntu. After the installation is complete, I rebooted and grub came up and I booted into Ubuntu without an issue. Next I re-booted and ...
2
votes
0answers
61 views

Corrupt registry: Duplicate entries for /etc/default/grub

Whenever I try to install any package from apt-get, I am getting this error: Setting up grub-pc (2.02~beta2-9ubuntu1.7) ... ucfr: Corrupt registry: Duplicate entries for /etc/default/grub grub-pc ...
2
votes
0answers
539 views

Ubuntu full disk encryption with encrypted /boot

I'm trying to setup a full encrypted disk with a separate /boot partition and I'm having some troubles. I'll write down the procedure I've been following on a Ubuntu 15.04 Live DVD session. Fill ...
2
votes
0answers
105 views

Dual boot issue with windows 10 and ubuntu 14.04

I have installed Ubuntu 14.04 on a windows 10 system. Installation was successful, but after rebooting the system, it is taking me directly to windows OS. GRUB menu is not getting loaded during the ...
2
votes
0answers
179 views

Can't type passphrase to decrypt disk

Just wiped out everything on my Macbook Pro Retina Early-2015 (Macbook12,1 or something) and installed Ubuntu. Had to use acpi=off and nodmraid just to get the USB stick to boot. I wanted to have ...
2
votes
0answers
472 views

Ubuntu 15.10 crashing randomly

Please forgive me as I am new to Ubuntu. Randomly, this thing which I think is called "Unity" will crash, and I will lose system vitals required to operate the computer. The icons in the top right ...
2
votes
0answers
288 views

15.10 - Ubuntu does not power off on shutdown

I have been around the internet trying to find the answer and no solution given has worked. I have disabled quiet and splash from /etc/default/grub so I can see the output. When shutting down, there ...
2
votes
0answers
85 views

clearing old kernels has left black screen after login ubuntu 14.04 lts - help

If I have removed files unwittingly in a clear up of old kernels can I reinstall Grub or do something to recover my desktop ubuntu 14.04 gnome? Following instructions on how to clear out older ...
2
votes
0answers
3k views

grub-install: this GPT partition label contains no BIOS Boot Partition

I have an installation of Ubuntu 15.04 that has been working fine for some weeks. Today, my box locked up to the point I had to power it off in order to clear the error. When I did so, it stopped ...
2
votes
0answers
102 views

Ubuntu doesn't boot (grub rescue - Unknown filesystem)

I turned up my PC like every day, but today doesn't boot normally. After the BIOS POST and the "Loading operative system...", it shows something like this: Error: Unknown filesystem grub rescue> ...
2
votes
0answers
526 views

GRUB not appearing after installing Ubuntu 15.04 on Windows 10 dual-boot

I have recently upgraded from Windows 8.1 to Windows 10. I tried to install Ubuntu 15.04 in dual boot configuration. PROBLEM: The system directly boots into Windows without the GRUB screen appearing. ...
2
votes
0answers
184 views

Error while installing ubuntu 15.04, unable to install grub-efi-amd64-signed

I tried to install Ubuntu 15.04 in my HP lap which has windows 8 OS. While installing, it showed an error that it was unable to install grub-efi-amd64-signed and it also mentioned that the above ...
2
votes
0answers
192 views

Ubuntu 15.04 Visual Glitches

I reinstalled Ubuntu 15.04 onto my computer, and I am receiving some strange graphical/visual glitches when I boot up. First off, there is some black terminal grub screen that comes up, tells me my ...
2
votes
0answers
82 views

Encrypted LVM Disk Password not “in box”

After a recent installation of Kubuntu 15.04 using encrypted LVM, I have the following problem. When I boot the system, the pretty Kubuntu encrypted disk password screen appears, but when I type the ...
2
votes
0answers
600 views

How to choose which OS to start in dual boot with Touch Screen and no physical keyboard?

I (now) own an HP Slate 2(b2a28ut) which it's a fancy piece of technological art. It does look like a tablet itself and it acts like an Android Tablet because of its Capacitive Touch Screen, but it is ...
2
votes
0answers
635 views

update-grub shows “No volume groups found”

Whenever I run sudo update-grub in a terminal, I get the following output: Generating grub configuration file ... Found background image: /usr/share/images/desktop-base/desktop-grub.png Found ...
2
votes
0answers
262 views

How to install kubuntu on Lenovo thinkpad e555

I have been trying to install Kubuntu 15.04 on Lenovo ThinkPad E555. I have created /, /home and /boot partition but as soon as I install it, it doesn't show up on boot screen (it only shows Windows ...
2
votes
0answers
648 views

Windows 10 and Grub not working properly

I recently decided to test Winodows 10 on my HP dv6 laptop with Ubuntu 14 installed. I was able to get Windows up and running without any problems but getting Ubuntu and Windows to boot properly has ...