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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Grub,Ubuntu bootup

I am using ubuntu 11.04.One fine day something went wrong and instead of loading windows directly as set by me initially,it started showing grub command line as soon i switch on my laptop.once i type ...
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9 views

Why is this grub-install not working

I am trying to create a Windows bootable USB on Ubuntu. However, while installing grub onto the USB with this command: grub-install --target=i386-pc ...
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10 views

How To Restore Access To 3 Distros After Installing Windows 8

I intend to install Windows 8 on my machine after being exclusively on Linux for a while so that I can upgrade to 10, learn it, and hopefully help anyone else who needs help with it, but first, I need ...
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1answer
24 views

Ubuntu Server Fails to boot from USB with External Drive

I recently installed Ubuntu Server 14.04 onto a 32GB pen drive. This is used as the main drive for an Intel NUC. -System- Intel Nuc (i3 D34010WYK) - Headless Sandisk USB3 micro pen drive (used ...
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4 views

How to password protect grub menu from changes to get into the root shell

Try to password protect through the /etc/grub.d/00_header and put in the cat lines to do so but I can still change what I want from grub.
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5 views

Unable to acces BIOS setup menu

Firts, sorry for my english level, I'm french ! I would like to install in dual-boot windows 7 and Ubuntu, to do this I must acces to my BIOS at the startup of my computer but when I want to acces my ...
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1answer
19 views

update-grub failing ubuntu 14.04 (wubi)

When I try to run sudo update-grub, I get the following error: Generating grub configuration file ... /etc/grub.d/10_lupin: 26: /etc/grub.d/10_lupin: data: not found Any ideas what ...
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17 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 ...
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2answers
22 views

Uninstall Kubuntu from a dual-boot with Ubuntu?

I have a multi-boot system with Windows 7, Ubuntu 15.04, and Kubuntu 15.04 installed in that order. At the moment, I think my system boots through Kubuntu's GRUB. My Windows is installed on an NTFS ...
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2answers
20 views

Ubuntu on 32-bit UEFI - optimal solution

I have a computer (Asus T200TA) with 2G RAM and 32-bit UEFI [Yep, what a wonderful idea to put 32-bit UEFI!]. I have two options: Install a 64-bit system, boot manually and install grub-efi-ia32. ...
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23 views

How can I edit the boot listing in ubuntu14 [duplicate]

I want to hide some of the list from boot menu.Is it possible?
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Windows 10 + Linux Mint 17.2 [on hold]

I installed Windows 10 over an existing windows partition on my system. Now I can't boot into Linux :( I've tried booting from the Linux live CD and running boot-repair but I get the an error as shown ...
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1answer
11 views

Having problems booting my Lenovo laptop

I reported a bug on this issue and have had zero response http://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1474342 The problem is that I can no longer turn on my laptop and expect it to ...
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12 views

Ubuntu 14.04 boot error after system update [on hold]

Kindly help me with this issue.... http://paste.ubuntu.com/11936041/
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14 views

Ubuntu 15.04 [HELP] initramfs error fail + Grub2 fail, can't boot or access my OS or files

I'm new here, so far I have been able to fix lots of stuff with past answers, but this time its different and I need help. I'm currently running my pc through a Ubuntu 14.04 Live USB, I have been ...
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2answers
16 views

boot-repair windows not listed

today I installed Windows 8.1 and it broke my grub. I tried to run the boot-repair GUI on a live session of Ubuntu but after the restart of the PC the grub displays ONLY Ubuntu. Before the ...
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10 views

Can't switch to TTY / virtual console, 14.04

Running Ubuntu 14.04 on a 2008 MBP (3,1). Dual booting with rEFInd. Pressing CTRL+ALT+F# does nothing at the greeter or once logged in. I have nomodeset in grub, if I remove it I can't get ubuntu to ...
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7 views

Unable to enter passphrase for encyrtion - screen looks weird

I have two PCs with encrypted / (home is not separated) partitions. On both i struggle with entering my pass phrase to decrypt the /. One PC has an ATI VGA card with the default driver and the ...
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1answer
9 views

Stuck at grub. Keyboard won't work

After a power outage, Ubuntu got stuck at Grub. But for some reason my keyboard won't work. I cannot even get to the bios. My keyboard does not receive any power! (It does work properly after booting ...
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1answer
30 views

Windows 7 reinstall now boot is broken

I had a virus on the Windows 7 part of my pc. I had to format the drive using the ubuntu side. then reinstalled fresh on the w7 part. originally, it only booted to w7 and then I have been trying to ...
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3 views

grub2: error: /vmlinuz-3.16-ucs109-amd64.efi.signed has invalid signature [migrated]

I am using a derivative of Debian, called Univention Corporate Server. It's a nice appliance that I use for my home server. Yesterday I upgraded to the newest version and since then my server does not ...
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15 views

Ubuntu single install SSD keep deleting data

I have a HP-ENVY laptop with 32GB LITEON SSD and 500GB Harddisk. I have a single boot system installed with ubuntu 14.04 on the SSD, and have a Data partition on the HD. Partitions look like this ...
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25 views

Help Installing Dual Boot Ubuntu on Secondary Hard Drive that has Stuff on it [migrated]

I have partitioned my disks like so. My plan was to install Elementary OS Freya (Based on Ubuntu) on my larger 1TB driver under the 64GB partition. When I go to install it, I get this. My secondary ...
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49 views

“GRUB installation failed” What do I do?

I'm trying to install Ubuntu Studio version 14.04.2 (alongside my Windows 8). Everything seems to go fine during the installation until at some point this message pops up: GRUB installation failed ...
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34 views

Unable to Dual Boot Ubuntu 14.04 with Windows 7 on UEFI

I have an Acer pc and it is running Win7. Because I'm having problems with that OS I wanted to do what the title suggests. And everything works great after the install. But everytime I try to restart ...
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1answer
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Grub 2 menu isn't showing up after installing Ubuntu 15.04, Windows 8.1 is preinstalled

I did boot-repair, ordered boot order through efibootmgr even did grub repair from live cd. but nothing happened yet. suggest solutions
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2answers
45 views

Cannot boot directly from Grub2 on dual boot Windows 8.1 with Xubuntu 14.04.2

I had Windows 8.1 Professional and Xubuntu in VM, but now I want dual boot. First two partitions I had them before with Windows 8.1 ((1) EFI and (2) msftres) then (3) partition C: and (4) parition ...
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20 views

Problems uninstalling Ubuntu (Bios keeps showing it?)

I'm trying new distributions, and I want to clean all my Ubuntu installation. I have a dual boot W 8.1 - Ubuntu. This is what I've done so far: 1 - I changed my boot priority from BIOS. 2 - I ...
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27 views

Custom Ubuntu 15.04 Installer - Fails grub install on UEFI systems

I used the ubuntu 15.04 64 bit ISO and customized it using UCK. I installed a bunch of packages into the custom installer & generated the ISO. It installs perfectly in Legacy mode (non UEFI) In ...
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1answer
21 views

Unknown filesystem with grub, but Windows Bootloader works!

I have been having this strange problem for a month or so. I have installed Ubuntu 14.04 alongside Win8.1 on my Lenovo z510. It worked fine for about 5 months, but almost a month ago, I started ...
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2answers
23 views

Grub will only boot one of my two windows OS [on hold]

I am perplexed with Grub and am hoping someone can advise me. I have three operating systems installed on my computer: Linuxmint 17 and Windows 7 on sda, and windows Vista on sdb. I updated grub and ...
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UBUNTU 14 LTS Server loaded on RAID 10 system (broke RAID to install) - No operating system found [on hold]

So removed the previous as things have now changed: I changed my BIOS (legacy ATA to enhanced) and got Grub to install on /dev/sda BUT still cannot see partitions... grrr... ...
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3answers
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Need help removing linux-image-3.16.0-34-generic and linux-image-extra-3.16.0-34-generic

So I feel like a dunce having to post about this but, I need help trying to fix this issue, mostly because without the fix I can't install any new software or run updates. For some reason one of the ...
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34 views

Grub not showing Windows 10 after ubuntu using boot-repair to repair grub

I have Ubuntu 15.04 64 bit installed I installed Windows 10, i used boot-repair to fix the grub but now, when grub comes up, windows is not listed, and after grub-update the problem remains, and the ...
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Cant get 15.04 or 14.10 or any version of Ubuntu to boot on Flex 10

I've seen a few questions around bit no one has really been able to hope. Ive been trying to get 64bit Linux working on this laptop through its 32bit EFI every nown and again for about a year now and ...
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13 views

How do I generate a GRUB configuration file for another disk?

Assume I have two disks that both have Ubuntu installed on them. One is an internal drive and the other is an external drive (though this doesn't really matter). This procedure is running on the ...
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13 views

Removal of Ubuntu when part of a dual boot setup with Win7?

I have Win 7 on one drive and Ubuntu 12.04.03 LTS on a second drive. Grub is the boot menu manager. I want to uninstall Ubuntu and keep Win 7 on this particular machine and install Ubuntu 14.04LTS ...
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1answer
30 views

Syntax error in grub config, no longer updating

I'm running a dual boot set up as shown on this forum and made changes to grub config (themes) as instructed on the OPs GitHub including edits to /etc/gru.d/10_linux (although I have a backup of the ...
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1answer
51 views

installing linux to usb, didn't change boot loader installation, can't get into windows

I was trying to create a persistent usb stick, with everything contained on the usb (including grub or whatever). I used the live cd to install and was pretty sure I changed the boot loader ...
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0answers
15 views

how to repair grub package in apt/dpkg?

When trying to remove obsolete packages I get the following errors for the grub package. How can I repair this? And what could have been the cause? Note that I tried to remove some java packages in ...
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38 views

What is the difference between Grub and Syslinux?

This question is related to my finding that Ubuntu and its derivative uses both Syslinux and Grub bootloaders on ISO images for Desktop releases. When booting from 32-bit ISO image, it is said that ...
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9 views

Problem with lost files on EXT3 Linux partition

i've got a big problem with files that have disappeared from EXT3 partition. This morning i have recived many i/o errors on consol of my linux server. I could not do anything in bash. After reboot ...
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43 views

how can I regain bootability of ubuntu after ubuntu 14.04 install alongside Win8.1

I am familiar with win but new to linux. The pc is a Dell Inspiron 660. The bios is AMI, build date 7/26/12, with the Aptio Setup Utility. I installed ubuntu alongside win8.1 via usb created with ...
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26 views

Ubuntu 15.04 can't shutdown — How to find a way to get a shutdown log

I think all is in the title actually, I just need a way to get a shutdown log to understand what can block it. I don't know if the problem comes from Ubuntu itself or Grub though, as my computer ...
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1answer
21 views

GParted will not start, corrupt GPT table

I'm trying to start GParted and get the following series of errors in pop-up boxes before it eventually quits: Invalid argument during seek for read on /dev/sda Libparted Bug Found! The backup GPT ...
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18 views

Kubuntu freezing on startup logo

I chose recovery option in Grub and it gets far enough that I can drop down to terminal and move around. I can't get the desktop to load no matter what I do. I've tried to edit xorg.config and it ...
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34 views

How to repair Ubuntu GRUB bootloader from within Windows WITHOUT a live CD

I've been running Ubuntu 15.04 and wanted to install Windows 7 for dual boot, and it of course deleted the GRUB bootloader upon install. However, every time I try to use a live CD or USB to repair ...
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1answer
12 views

Boot stuck at IRQ 22

I'm running Ubuntu 14 on a Macbook any my system froze so I performed a hard reboot. However when it came back up, it shows me the grub menu but no matter which kernel I pick the boot freezes with the ...
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2answers
33 views

Install Ubuntu Linux Desktop 15.x on Pre-installed Windows 8.1 laptop and have dual boot [duplicate]

I looked at various questions all over the internet. Infact i did the same almost 6 months back on my HP Desktop but i did so much hit and trial that i have forgotten what to do this time? Do i need ...
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1answer
10 views

Grub rescue trouble after moving a partition

So I was allocating some free space for ubuntu and now grub is launching in rescue mode. I have done a lot of searching and tried what has been suggested here several times. Grub rescue - error: ...