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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No Windows Option on Lubuntu Dual Boot on Surface Pro 3

I installed Lubuntu alongside a preexisting windows 8.1 install on my Surface Pro 3. Lubuntu was installed fine - but when I boot up - I dont see an option to boot into Windows. ...
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Ubuntu installation on UEFI system - grub console after boot

After a short (but bloody) battle I was finally able to install Ubuntu on my Dell XPS 13 (the 2015 one). After rebooting all I can see is the grub console. Typing exit pops up the Windows system that ...
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Magic alloc can't be resolved using live-cd

Seems like when updating from 14.10 to 15.04, I screwed my grub2 installation and now when I boot from live-cd and try applying the boot-repair, I cannot boot my ubuntu distribution. Here is the log ...
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my pc displays GRUB and doesn't starts

I just tried to install ubuntu on my PC. I ran Wubi and rebooted computer. My pc has two partitions, one with windows installed and the other with an ubuntu-based linux OS called Linkat, created in my ...
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1answer
13 views

Force GRUB menu to choose my OS

I've installed Lubuntu on a pc. When the pc turns off incorrectly, sometimes, at the next boot, the grub menu appears and it wait for my choise. I would like to run my os, every times and in any case, ...
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Changing Ubuntu's Splash screen in 14.10 [duplicate]

I need to know if I can change the boring Ubuntu logo with the five dots changing from White to Orange after the GRUB2 menu, I know I can change GRUB2's menu look with the documents on the Ubuntu ...
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2answers
25 views

Keep grub over windows

I resized a windows partition using gparted which moved the start of that partition and windows stopped working. I can repair it using windows disc but then it would put the windows boot loader on ...
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1answer
27 views

Upgraded Lubuntu 14.10 to 15.04, now get “Kernel Panic: not syncing VFS: Unable to mount root fs.”

I have a home server with Lubuntu installed. A few days ago, a Ubuntu update dialog box appeared, and I seemed to update to the latest version with no trouble (at least, no apparent errors). However, ...
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22 views

Landing in the GRUB command line at start up (bcs of XFS filesystem at /boot!)

Edit. The problem that I landed directly in the GRUB command line was another bug than originally asked for - see the answer. I changed the title accordingly. I think the title says it all. I'll ...
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18 views

error: file '/boot/grub/i386-pc/extcmd.mod' not found. Entering rescue mode… grub rescue>'

I run ubuntu on my laptop from an external drive. But I turned it off yesterday, and when I tried to turn it back on, this message came up: error: file '/boot/grub/i386-pc/extcmd.mod' not found. ...
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20 views

Trouble Deleting a Partition Containing Grub

I have uninstalled Ubuntu from my main machine, but am having difficulty restoring the boot back to the Windows 8.1 default. I followed a guide from ...
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1answer
93 views

I keep getting the same GRUB error?

Any help will be greatly appreciated. Every time I start my computer, I encounter the error: '/boot/grub/x86_64-efi/normal.mod' not found. Here is a screenshot of my hard drive partition: I have ...
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19 views

Upgraded a virtual guest system: /dev/disk/uuid… does not exit

I recently upgraded my Ubuntu 14.04 (kubuntu), running as a guest inside VirtualBox 4.3.12 hosted by Windows 7 Enterprise, 64 bit. All ran fine until yesterday - when I tried to start the new ...
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27 views

Broken boot ubuntu 15.04 - Adding repository from live-usb

When I installed ubntu 15 I pressed ctrl c and the installation was interrupted. I got the error about kernel-panic. I try to do a boot-reapir using a live-cd. I ran it with purge grub as was ...
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14 views

Clonezilla and Alignment

I have to move my 14.04 system from my old SSD onto a new one. Having decided to use Clonezilla, I went for direct disk-to-image: this would have had the bootloader (grub) cloned as well, allowing to ...
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16 views

Loading Operating System

Stuck at boot on "Loading operation system". (Not getting into Grub) Fresh installation of UBUNTU Server 14.04 from USB Stick Two partitions: root and swap Boot-loader in the root partition Help ...
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11 views

Grub-Bootmenu not showing up after triple-boot install (Ubuntu + 2xWindows10)

I first installed Windows10 (x32) on my Laptop, and then I installed Ubuntu. As it didn't ask me to boot into Windows10, and just booted to Ubuntu, I launched Grub-Boot-Repair and set up the boot. ...
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1answer
26 views

GRUB “unknown filesystem” error on second boot of each day

I've installed a new 64GB SSD in my HP Compaq 2510p laptop. The SSD model is KingSpec KSD-ZF1. This system is a single-boot machine running Ubuntu 14.04.2 LTS. There are no other operating systems ...
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20 views

15.04 GRUB Timeout

I've edited the config file but still defaults to ten second time out. I could try GRUB Customizer but not sure that would help, or if PPA available? I am using MATE spin.
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14 views

How to boot from USB on a macbook pro with GRUB

I have macbook pro that I have only ubuntu on. It's using gnu grub. I have bootable USB with the new ubuntu that I desperately can't boot the last hour. I can't either bios or choose it any familiar ...
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22 views

Ubuntu 15.04 black screen after grub

I have two systems with 15.04 and the same problem. The system partition is luks encrypted. If I start the machine, after grub menu I get a black screen and can't input the luks passphrase. If I ...
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19 views

Grub2 not loading in dual boot Windows 8.1 and Ubuntu 14.04 LTS on HP 4540s

Iam using a HP 4540s Notebook with Windows 8.1 Uefi installed. I followed all the steps for Ubuntu 14.04 LTS instalation and i got it all working but to load my dear Ubuntu i have to press F9 to ...
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39 views

Help me Get to the Ubuntu 15.04 Partition, please

I had earlier installed Ubuntu 14.10, as a dual boot, on a hard disk drive that had come pre-installed with Windows 8.1. Later I had added a solid-state drive and installed windows 10 insider ...
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17 views

Windows 8 safemode from grub [on hold]

I want to run Windows 8 in safemode because it keeps saying "please wait" and does not open. The problem is that Windows 8 boot is so quick to interrupt by F8 and this is not working. Can I write ...
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10 views

Keyboard doesn't work during bootup/grub if Wacom tablet is plugged in

I did an install of 15.04 on a second hard drive last night. After install everything was working great, initially. I tested that I could boot into Ubuntu from GRUB, into Windows, and into the BIOS. ...
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1answer
24 views

I Have 2 Ubuntu options in Bios even after uninstalling the partition of elementary os freya in windows?

I've set the bios to automatically boot to windows 8.1 but there are 2 ubuntu options in the Bios even after I deleted the partition in which I installed elementary os freya by logging into windows ...
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15 views

Wifi does not work correctly after editing etc/default/grub

I've searches the net for hours trying to solve this, and can't find anything to help. My issue is thus: My Ubuntu 14.04LTS wasn't shutting down properly. This is the fourth time I've reinstalled ...
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28 views

minimal bash-like line editing is supported. Problem after a fresh installation of ubuntu 14.04.2

So I had ubuntu on my NUC. It was great I have to power on and ubuntu start. But I had a problem and I had to reinstall everything. I erase everything and install to have a fresh ubuntu. Everything ...
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12 views

Boot Ubuntu on second pc from External HDD

I had installed ubuntu un an external harddrive that I used with my laptop to dualboot ubuntu with windows 8.1 I had installed the grub on the external drive so that whenever I unpluged the drive I ...
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28 views

Configuring grub-pc, I cannot select an option

I am trying to select /dev/sda for GRUB when running "sudo apt-get upgrade", however no matter which key I press it treats it as "ENTER". This means if I press the spacebar to select /dev/sda for ...
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2answers
25 views

Laptop boots directly to Windows, Ubuntu alredy installed and refind not working

So i have this weird problem on a HP laptop Atheros. I first installed windows 7 and then Trusty Tahr,both on Uefi mode with the gpt partition. The problem is that when i turn it on, it goes ...
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9 views

costum grub2 menuentry for mdadm lvm partition

I want to set a new entry in /etc/grub.d/40_costum to boot from a mdadm/lvm partition. I know how to do it with standard mbr/gpt partition like (hd0,1)/vmlinuz. How do I use raid1 and lvm grub2 ...
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1answer
77 views

How to start lightdm services at startup

My system is running Ubuntu 15.04 and I've changed default boot to "text" instead of "quiet splash" by going through answer by @Bruno Pereira How do I disable X at boot time so that the system boots ...
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34 views

Ubuntu does not boot after install when another hdd/storage is present

I have installed Ubuntu 14.04 on my desktop and Ubuntu does not boot after install. It requires me to use boot repair https://help.ubuntu.com/community/Boot-Repair to fix it so it will boot ...
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1answer
34 views

Operating System not found (Grub error)

Certainly after a reboot my pc I am getting following message in a grub welcome screen GNU GRUB version 2.02~beta2-9ubuntu1 Minimal BASH-like line editing is supported.For the first word, TAB lists ...
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32 views

Error: environment block too small. Press any key to continue

I am running Ubuntu 15.04 and getting this error in grub menu Error: environment block too small Press any key to continueI went through this AskUbuntu Post about this problem but unable to solve it ...
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1answer
22 views

Stuck in Grub Rescue [on hold]

I have windows 7 and Ubuntu 13.10 as dual boot in my computer. I tried to install Redhat Enterprise Linux in an empty unallocated space and the installation failed due to some errors. Now, all I get ...
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18 views

Recent GRUB update, choices on menu

On 2015-05-15 I applied an update from Software Updater. An option box appeared and gave me some choices about what to do with the GRUB update. I don't remember exactly but the choices were ...
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36 views

Ubuntu won't boot from USB Stick on my PC - Black screen - But boots on another PC

My PC is running Ubuntu and Windows. Now I installed Ubuntu from a CD on my PC to a USB Stick successfully. I went to another PC and I could boot to Ubuntu from it (grub menu was showing) and ...
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15 views

Upgrade Ubuntu without GRUB

I have a very odd setup and I would like to upgrade my Ubuntu installation while maintaining this setup. Here's the situation: My actual HDD (let's call it "sda") has a Windows installation on it, ...
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11 views

initramfs, faulty or not working partition

I've had a problem plaguing me for a few days. I had a buggy version of 14.04 installed for a while now, and I told myself enough is enough and plugged a USB flash drive with the 15.04 iso on it and ...
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0answers
14 views

grub-install looking for /,

Installing regular ubuntu updates via software updater gives me the following error: grub-install: error: cannot find a GRUB drive for /,. Check your device.map. I have no idea why it is looking ...
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23 views

Can't see windows 8 in grub after installing ubuntu 14.04

I installed ubuntu 14.04 on my Lenovo flex 2 alongside with windows 8. After the installing, I could see windows at grub boot-loader, but after clicking it I got an error. Trying to fix it, I followed ...
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1answer
21 views

Installing Windows 7 after installing Ubuntu on btrfs: how to restore boot?

I've looked at the answers on this question, but none of them solved my problem: How can I repair grub? (How to get Ubuntu back after installing Windows?) My system is partitioned as follows. ...
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12 views

how save changes when boot iso from hdd in grub2?

i want to boot ISO file of my linux distribution in Grub bootloader. i used this code of menuentry in grub.cfg: menuentry "ISO BlackArch" --class iso { set ...
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22 views

update-grub does not see another linux

I've installed Gentoo from Ubuntu on /dev/sda4 using this tutorial, which uses Ubuntu instead of LiveCD. But tutorial did not have anything about updating GRUB. So I did it as usual: sudo ...
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14.04.2 keeps freezing 15mins after start up and no screen

Every time I turn on my desktop the bios show up then after that it is a blank screen. I restart the system and then goes in to grub menu i select ubuntu. Ubuntu is the only thing on my system. Then I ...
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26 views

Ubuntu 14 LTS server going to sleep/shutdown

We recently transitioned from Ubuntu 12 to Ubuntu 14 server installations and started to notice that the servers are occasionally go to sleep after couple of hours to days intermittently. ...
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1answer
35 views

Option to boot to Windows 7 disappeared. Ubuntu 14.04

I had a dual boot system with Windows 7 and Ubuntu 14.04. The dual boot used to work perfectly but after some days of happily using Ubuntu I realized that the option to boot into windows 7 ...
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17 views

How do I bypass Windows bootloader screen using grub? Also, how do I bypass chameleon bootloader of hackintosh using grub? [on hold]

I have Windows 8.1, Windows 10 Insider Preview, Ubuntu 15.04 and hackintosh (OSX Yosemite) installed on their own partitions. I am using grub as default bootloader for booting. I can boot into any of ...