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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Error message when trying to install from USB

I have an old Lenovo laptop which came with Windows 8 preinstalled. I "factory reset" it and installed Ubuntu but then decided I wanted to switch to Zorin instead. I followed this article and deleted ...
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1answer
11 views

What is correct GRUB_GFXMODE variable format in grub?

What is the correct format for the GRUB_GFXMODE variable in /etc/default/grub? Should it have a dash before the color depth?... GRUB_GFXMODE=1920x1200-24 Or, should it use an "x" before the color ...
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2answers
50 views

Can't Boot Window7 at grub2 menu

I recently installed Ubuntu 14.04 on the same partition as windows 7. I shrunk the win7 partition expecting that that will allow me to install Ubuntu ( which it did ). When I start up my computer it ...
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0answers
39 views

BOOTMGR missing [closed]

I had a dualboot Ubuntu + Windows 7 and I decided to delete Windows 7. I deleted Windows 7 with the help of gparted, then restarted the PC and everything was good. Next time I turn my PC on i got the ...
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0answers
19 views

Boot failure - /dev/mapper does not exist

I had a previously bootable version of Ubuntu, however now when I try to boot I see the error message ALERT! /dev/mapper/isw_bdacadajjgh_ARRAY0p5 does not exist. Dropping to a shell This is a work ...
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0answers
17 views

Reboot instead of shutdown without wireless mouse plugged in

I have an HP ProBook Intel Core i5 with Ubuntu 14.04 64 bit installed. I bought an HP wireless mouse and everything worked fine until now : I'm unable to shutdown the system (the system restarts ...
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0answers
52 views

error: attempt to read or write outside of disk hd0 [duplicate]

After starting up my laptop - which runs Ubuntu 14.04, I got error: attempt to read or write outside of disk hd0 when I manage to boot using command line I got grub> when I write ...
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13 views

Ubuntu 14.04 brightness too low, keyboard backlight is on, how can i change this?

i used to have ubuntu 12.04 and when i upgraded to 14.04 "grub" will start with very dim light and my keyboard backlight on. i don't think is about fixing grub because it works fine and it still shows ...
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3answers
56 views

Accessing the grub2? Common methods already tried

So I'm trying to access the grub2 menu (or any boot menu for that matter) and I have tried most things I have found online. I am running the latest version of ubuntu and it is the only OS so it ...
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1answer
68 views

Installing Windows7 after Ubuntu 14.04, other recommendations not working

I know this questions has been asked hundreds if not thousands of times, and I've actually successfully done this before, but I've tried several things on this system, and nothing has worked yet. ...
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2answers
109 views

Windows 8.1 not booting after Ubuntu 14.04 Installation

I'm an absolute Linux newbie, I've never used it before. I've just installed Ubuntu 14.04 on the same hard drive with Windows 8.1. When I choose a Windows 8 Loader in the Grub Loader screen, nothing ...
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1answer
58 views

Create UEFI bootable USB stick to install Windows AND Ubuntu from it

I know how to make a UEFI bootable stick to install Ubuntu (explained here) and I know how to make one to install Windows 7 (guide in German, sorry). I guess for Win 8 the procedure would be similar, ...
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0answers
29 views

Run a script after every grub-update

I want to run a script automatically after every grub-update. The script itself consists of a single line sed -i 's/[\]"!Windows 2006[\]"/"!Windows 2006"/g' /boot/grub/grub.cfg For this purpose, I ...
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2answers
73 views

How do I burn the Windows 10 ISO to a USB?

I did the dd method and it worked but I'm not sure that's all you have to do because it is Windows and may not have GRUB and I'm not sure so I'm asking the experts haha. WINUSB DID NOT WORK BECAUSE ...
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0answers
49 views

Boot repair disk failed to repair boot after Windows 8.1 upgrade

I am running a dual boot with Ubuntu 14.04 and Windows 8. After upgrading to Windows 8.1, I am no longer able to boot into Ubuntu. It says "unknown filesystem" and gives me a prompt for Grub repair. ...
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0answers
21 views

Boot Menu not functoning properly

My computer is currently dual booted with ubuntu and windows 8.1. When I turn on my computer my boot menu displays three options: "Ubuntu","Ubuntu Advanced Options", and "Windows Recovery ...
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0answers
35 views

Boot goes to initramfs

I installed Ubuntu on my machine as a duel boot on a hdd in a drive caddy on a Lenovo w510. On my primary ssd I have windows 8. I believe that my grub install is located on my primary drive. When I ...
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0answers
23 views

Grub rescue not working, I don't know how to intall grub from Live USB?

I have recently Updated from Ubuntu 12 to Ubuntu 14.4 but while rebooting it is going into the grub rescue screen. I don't know what to do, I tried the steps given for grub rescue using command line ...
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0answers
26 views

Booting flash drive on multiple PCs

I installed Ubuntu GNOME on a 120GB USB 3.0 SSD with the intention of making a portable Linux install (not live) I could boot off of any system. I'm getting kernel panic due to UUID being incorrect ...
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0answers
28 views

Ubuntu 14.04 Dual-boot freezes

My Ubuntu 14.04 boot keeps freezing up after about two to three minutes. I have an HP Elitebook with an I7 processor with windows 7 pre-installed. I used the windows partition editor to create an ...
2
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1answer
33 views

How to list GRUB's “menuentries” in command-line?

Is there a way of retrieving list of "menuentries" titles of GRUB? I need a results in a format that grub-set-default will accept. eg. "Ubuntu" "Memory test (memtest86+)" etc.
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2answers
59 views

Change kernel version from command line [duplicate]

Is there a way to reboot with a different kernel version from the command line? I have Ubuntu PXE booted on a VM, and there is no graphical interface, but I need to downgrade the kernel (which is ...
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0answers
16 views

Cant install ubuntu alongside win 7 (had Win 8)

I have read many many posts and tried to find my problem in one of them some back story, my laptop came with win 8 I re install it with win 7 I allocated some space from win 7 disk manage then run ...
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0answers
23 views

Ubuntu grub customization through terminal ?

I was just wondering what would be the equivalent of bcdedit(windows) in Ubuntu as I am having some problems to resume system after hibernation in Ubuntu 14.10. I am currently using boot-repair ...
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0answers
18 views

Boot manager problem

I installed Ubuntu 14.10 along with my Windows 8 pre-installed UEFI OS and it installed correctly. My problem is when I reboot or turn on my system it asks whether go to Ubuntu or Windows 8. But once ...
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0answers
11 views

Ubuntu UEFI installation no video / currupted video out

I wan't to install Ubuntu 14.04.2 on my new system via a bootable USB stick (UEFI). The system correctly recognizes the stick as UEFI and I get the UEFI grub menu where I can choose what to do. ...
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0answers
28 views

grub rescue in dual booting (with ubuntu 12.04) and kernel panic error

Can anyone please help me out in solving the grub rescue problem that I'm facing on my Lenovo G570 laptop (installed operating systems are - windows 7 home basic and ubuntu 12.04 LTS)? The initial ...
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1answer
26 views

problem in dual boot [duplicate]

I have recently dual booted ubuntu 14.04.2 LTS alongside window 7 in my dell laptop from live usb flash drive. the dual boot was working until I deleted empty partition(not ubuntu or window partition) ...
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1answer
66 views

stuck at this screen after installing GNOME [duplicate]

I'm stuck at this screen after boot. I have installed and again uninstalled GNOME through Ubuntu Software center before. I really just want to go back to Ubuntu.
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0answers
20 views

How can I disable DisplayPort-1 in grub?

How do I turn off/disable DisplayPort-1 in Grub? Specifically, I'm looking for something similar to GRUB_CMDLINE_LINUX_DEFAULT="video=LVDS-1:d", except for DisplayPort-1 instead of LVDS-1. This is ...
0
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1answer
56 views

How to triple boot windows 7, ubuntu 14.04, and ubuntu 14.10 (keeping windows loader if possible)

I want to be able to play around with drivers and updates without putting my primary work in danger so I want to add ubuntu 14.10 to the possible OSes I can boot into. I already have windows 7 and ...
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1answer
37 views

Booting Into Fresh Install of Ubuntu on Lenovo x120e

Finished installing Ubuntu, in what appears to be a successful installation. However, I cannot boot into it ("No Operating System Found"). After researching, I came across this article that advises ...
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1answer
18 views

Grub question mbr

Apparantly I have grub installed on the MBR of 2 drives, my question is 'how can I check this?' And 'how can I solve this?' I am using Ubuntu 14.04 lte in dual boot with Windows 7, this all works ...
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1answer
24 views

Triple-Boot with GRUB on ubuntu

I installed the ubuntu first, then windows. Windows did overwrite on the GRUB, so i recovered GRUB and now I am able to dual-boot. My question is, if iI install Manjaro now, on a different partition, ...
1
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1answer
39 views

Grub boot probelm

I have Ubuntu 14.04.2 installed on my first HDD (500GB) with a second drive(1TB) as a backup (500GB), and the rest(500GB) non allocated. I needed to run a windows based only program for school so ...
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1answer
54 views

How to dual boot Ubuntu with some other distribution?

My laptop initially had Windows 8.1 with UEFI firmware but now I have replaced Windows with Ubuntu 14.04. Now I want to install Kali Linux alongside Ubuntu. How can I do that?
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2answers
99 views

Install Windows 8.1. with BIOS unaccessible

I've got really annoying problem and can't seem to figure out how to work it through. Recently I cleared my hard drive and installed JUST ubuntu 12.04 and of course upgraded to 14.04. Now I need ...
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0answers
30 views

Installing ubuntu with windows 7 Disk error load

I'm new using Ubuntu my life was going great after i installed alongside with Windows7 that's where problem happens. :) I see that this issue is extremely common but I didn't find any properly ...
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1answer
28 views

Windows 8 not showing up in GRUB

Initially my computer was going straight to BIOS and I couldn't even get to GRUB. I've ran boot-repair using a live session from a DVD, here was the output : http://paste.ubuntu.com/10615351/. After ...
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0answers
21 views

Ubuntu 14.04 does not autoboot

My Ubuntu 14.04 doesn't autoboot, I've to manually select the default grub item. My /etc/default/grub: GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=2 ...
0
votes
1answer
21 views

I have 2 SSDs one for windows the other for ubuntu. No gurb on sda

I installed Windows 8 on sda and I installed Xubuntu on sdb, but I don't like using Ubuntu grub to change sda mbr. I like to use a simple F12 solution for dual boot. How can I remove grub on sda and ...
0
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2answers
41 views

Broken Sudo and no write privilige on file system

I had upgraded ubuntu12.04 to ubuntu14.04 and it didn't boot unless I edited this line in the grub menu linux ${rel-dirname}/${basename} root=${lINUX_HOST_DEVICE} loop=${loop_file_relative} ro ...
0
votes
1answer
50 views

Dual boot giving boot priority to Ubuntu 14.04 (UEFI based)

I will install ubuntu in a computer with pre-installed Windwos 8, this summarize all procedures (Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported)), but something very ...
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0answers
29 views

GRUB2 booting raw hdd disk image via loopback

First of all, i tried to google, but only found how to's for booting iso files with grub via loopback. Im running linux mint 17.1 64, up to date. i have a complete dd image of a 128GB SSD with ...
0
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1answer
36 views

GRUB not showing up

I installed Ubuntu 14.10 alongside windows 8.1 and it was working fine until I ran the CHKDSK command in windows now when I restart the PC, there is no GRUB screen and the PC boots directly into ...
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0answers
57 views

Trying to Install Ubuntu 14.10 but will not boot from the hard drive

Okay, I've been at this for 3 days now. I am installing Ubuntu Via USB and I'm using the Universal USB installer and downloaded the Ubuntu 14.10 version. I tried two ways to install it to the hard ...
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0answers
11 views

Installing 12.10 on the drive where 14.10 is installed

I have a Dell laptop with 64 bit architecture. I installed 14.10 and windows 8.1 as dual boot. Later I tried to install 12.10 on the same drive(/sda6) as 14.10. The installation was successful but ...
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0answers
35 views

Strange boot issue (purple screen)

I'm somewhat of a noob when it comes to this kind of stuff, but I am a computer science student so I am familiar with operating systems. Anyway, I'll try to be as detailed as possible in describing ...
1
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2answers
106 views

Failed to open \EFI\Microsoft\Boot\grubx64.efi - 80000000000000E

I have a fresh install of 14.04 on a new SSD. Everything was running fine until I ran boot-repair for some reason that I cannot remember. Now when I boot up I get the following errors: Failed to open ...
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0answers
16 views

Why couldn't I see grub when first dual-booting with Windows 8? [duplicate]

I just installed Ubuntu. When I rebooted the PC Windows 8 was starting automatically. I thought that "Install alongside Windows 8" meant, that I could directly use the dual-boot, but I had to use ...