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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How to Re-Add Windows XP to grub menu after Ubuntu 11.10 Re-install

Basically, I messed up my partitions and decided to do a full re-install of both Windows XP and Ubuntu 11.10 (I know that 11.10 is outdated, but I was planning to do an update to 12.04 as soon as I ...
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0answers
33 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 ...
8
votes
2answers
221 views

Backup LVM snapshots and Grub2 problem

Long story short, I'm using obnam to take backups of my system. This is what I do: take LVM snapshot of /, /usr, /boot, /var, /home mount the snapshots on /bck-snapshots, /bck-snapshots/usr, ...
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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 ...
0
votes
2answers
78 views

Ubuntu Server 14.04 after perfect install, boots into blank screen

After installing Ubuntuserver 14.04.2 LTS without any errors I tried to boot into my SSD and then I just got to a blank screen with a blinking underscore. There was no input except for "Ctrl + alt + ...
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2answers
4k views

Grub2 on LVM: How can I switch between alternate root LVs?

I have a working setup of Ubuntu Server 12.04 LTS (precise) installed on a LVM Volume (/dev/vg0/root). /boot is on the same LV, and Grub2 boots nicely from it using its own raid/lvm/xfs modules. Great ...
0
votes
1answer
26 views

Ubuntu Partition deleted and got i386 file not found error

My query might be looking similar to others which are already posted here and in other forums. But i didn't see exact problem what i am facing. Here we go, My mistakes: Tried to install windows ...
0
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0answers
25 views

Ubuntu 12.04 and Windows 8.1 efidisk read error

I successfully dual boot Ubuntu 12.04 and Windows 8.1 UEFI Boot Mode Ubuntu 12.04 and Windows 8.1 UEFI When I boot, it shows error:efidisk read error, but it goes to Grub's boot menu right after ...
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2answers
63k views

How can I change/convert a Ubuntu MBR drive to a GPT, and make Ubuntu boot from EFI?

I recently have upgraded my PC, my new Motherboard (ASUS M5A99X EVO) uses UEFi instead of the regular MBR option. I have a Ubuntu 11.10 installation that I did when I had my previous hardware (MSI MS ...
1
vote
1answer
48 views

Cannot boot to Windows 8.1 after installing Ubuntu

The issue is fixed, I had forgotten to change boot mode and boot priority in BIOS to UEFI and UEFI First, and also 'Optimize for' from 'other OS' to 'Win8 64bit' First of all, sorry if this question ...
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votes
3answers
723 views

No option to choose between Ubuntu or Windows at startup; tried many suggestions already

Yesterday I used a live cd to install Ubuntu 14.04 on a computer already loaded with Windows 8. The Ubuntu install did NOT recognize any operating system on the computer, so I chose "something else" ...
0
votes
1answer
43 views

Visualizing linux GPT partition (EFI) from Windows Host

I created a rescue grub.iso using the following script. This code worked for me when I using Windows 7, Ubuntu 12, MBR: #!/bin/sh set -e wk_dir=$(mktemp -d "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") mkdir -p ...
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votes
0answers
25 views

executing 'grub-install /dev/sda' failed

I am installing Ubuntu 14.04 as dual-boot with Windows 8 in my HP pavilion laptop in UEFI mode but after some processing it shows an error executing grub-install /dev/sda failed. this is a fatal ...
0
votes
0answers
32 views

Booting Ubuntu 14.10 alongside Windows 8 stops working on installation of nvidia drivers

So I've built my own PC, and I'm trying to install Windows 8.1 and Ubuntu 14.10 alongside each other onto a 3 disk RAID5 array. The PC also has a fairly beefy video card (a Gigabyte Nvidia GeForce ...
0
votes
1answer
228 views

I can not boot directly into Text Mode in 14.10

I want my Ubuntu 14.10 system to boot directly into command line, so I changed the grub file in (/etc/default/grub) like this : (#)GRUB_CMDLINE_LINUX_DEFAULT=”quiet” GRUB_CMDLINE_LINUX=”text” ...
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votes
0answers
27 views

Ubuntu Grub-Customizer: After first reboot after changing settings, Ubuntu freezes after Login

I can't do anything, this has happened to me twice, after logging in, I can move my mouse but it only shows my wallpaper, and that's about it. I didn't know what caused it the first time, but now that ...
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votes
0answers
19 views

Disk shown invalid after ubuntu installed with windows 8.1

I have recently installed Ubuntu with windows 8.1. It worked fine but one day it crashed my windows boot-loader. In diskpart section of windows troubleshooter (cmd) my disk is shown invalid and I ...
2
votes
2answers
4k views

Ubuntu 12.04 failed to reboot after unsuccessful update done on 28/8/2013

I did update on 28/8/2013. It includes the kernel update, mesa update, firefox, thunderbird, python, etc... Before all updates finishes, my internet connection terminated, so in the next reboot my ...
0
votes
0answers
24 views

Windows 8.1 not booting after trying ubuntu 14 on hp 1000

It all started when I made my harddisk drive bootable and uses C (where my windows 8) was installed to boot ubunt, I used unibootein software for it. It worked fine for me every time on start up I ...
0
votes
1answer
28 views

Repair GNU GRUB [duplicate]

I have Ubuntu 14.04 LTS as Dual-Boot with Windows 7 and everything worked superb. Then as I booted my PC GNU Grub rescue popped up and told me, that it couldn't find my SSD. But as I booted into the ...
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votes
0answers
38 views

Black screen and restart after grub menu

So looks like this question gets asked a lot, but it is after ubuntu is installed it seems. I haven't messed with a Linux distro in awhile, but I am sure I am doing it right. I have tried installing ...
0
votes
2answers
34 views

Grub can't be saved after modification

I have Ubuntu 14.04 32 bit machine on my lenovo g580. Default brightness keys are not working and can't decrease brightness in settings also. The brightness has been fixed at maximum. I followed few ...
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votes
0answers
25 views

Windows 8.1 updated and now grub is in boot repair [duplicate]

After i updated my Windows 8.1 partition and rebooted into Grub2 it put me straight into grub repair. How could i fix this because it is very annoying
0
votes
2answers
6k views

How do I fix this problem with grub after installing Ubuntu server?

I've installed GRUB as part of the Installation process of Ubuntu Server 13.04 LTS edition. This is the screen that I get after booting from my hard drive: GRUB: Loading. Welcome to GRUB! error: ...
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0answers
23 views

grub rescue> error: unknown filesystem

I deleted the partition where linux is installed on my computer as per the given instructions in askubuntu.com forum. Then I restarted my system to perform the following commands in command prompt: ...
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votes
0answers
22 views

How to repair grub to prompt for Windows or Ubuntu?

http://paste.ubuntu.com/10583474/ I've pasted the link into this email that Boot Repair spit out to me. I believe that I've successfully partitioned my hard drive and installed Ubuntu 14.04.2 LTS ...
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0answers
77 views

GRUB Won't load after instaling Ubuntu 14.04 on Windows 7 Dell Inspiron 3537 [duplicate]

I bought this laptop from Amazon, which is a Dell Inspiron 3537 with a Windows 7 OS. It DID have Windows 8 before it, the company which was the supplier obviously changed the operating system. I ...
3
votes
1answer
2k views

How can I make Ubuntu the default boot option on a newer laptop (UEFI)?

I have a HP Spectre XT that I installed Ubuntu on. I have turned "Secure Boot" off and turned on "Legacy Support" in the settings. This laptop has UEFI and it always boots to Windows 8 rather than the ...
0
votes
0answers
26 views

Grub Customizer not changing anything

I've changed the order and removed a couple entries in the Grub menu. I hit save, and it goes through saving without an issue, and when I run update-grub, it's output matches my changes (ie. found ...
0
votes
1answer
32 views

How to bypass “Try it / Install” screen when booting from USB Live Session of 14.04 LTS?

I'm trying to accomplish the exact same thing as MestreLion from this question. The answers given there were for 11.04 and 13.10 and are no longer workable for 14.04 LTS. Basically I want a 14.04 ...
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vote
2answers
1k views

Installed dual boot Ubuntu 14.04 and Windows 8.1 Can't boot into Windows

I have two internal hard drives; 1 for Windows 8.1 and 1 for storage. I decided to install Ubuntu on the secondary hard drive. One of the guides I used advised me to make a small boot partition in the ...
1
vote
1answer
28 views

Update grub to remove old installations of Windows and Linux?

I know you are gonna say this question is already asked but all i could find in searching is answers on how to update grub to remove old kernels and/or installations of linux. My question is a bit ...
2
votes
2answers
89 views

Help With Dual Boot Ubuntu 14.1 and Windows 8.1

So here's my problem. I used YUMI from pendrivelinux.com, and I made a Ubuntu LiveCD. I tried manually and automatically partitioning, and I ran into many problems. After rebooting after installing ...
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vote
0answers
84 views

How to disable Secure Boot in Asus Z97i Plus to dual boot Ubuntu / Windows 8.1?

In Windows 8.1, I created a bootable USB drive with Ubuntu 14.04 on it. I've installed ubuntu on a partition of the SSD drive. Win 8 is installed on a different partition of that SSD. Problem: the ...
1
vote
3answers
3k views

Is is possible to modprobe a module from the boot loader?

I want to modprobe a module from the kernel command line (in my case yaboot, but you are probably more familiar with grub). This is for a workaround for the live CD. I've seen some old advice that ...
0
votes
1answer
78 views

fix error: no such partition. grub rescue WITHOUT cd drive

I'm trying to completely remove UBuntu from my Asus Eee PC 1015PEM because I'm giving it to a relative. I thought it would be as simple as deleting the partition it was stored on using Windows Disk ...
1
vote
1answer
3k views

Start-up error (ALERT! /dev/disk/by-uuid/xxxxxxxxx does not exist. Dropping to a shell! )

I got serius problem with ubuntu 14.04 please help me. When i start my computer its says following errors: — Boot args (cat /proc/cmdline) — Check rootdelay= (did the system wait long enough?) — ...
0
votes
0answers
22 views

Win7 nor Ubuntu 14.10 will not boot after installing Ubuntu

After installing Ubuntu the computer now just boots to a black screen. I booted to the Live USB stick and attempted a boot-repair and they said to paste this link for help ...
0
votes
0answers
54 views

Triple Boot Yosemite Bootcamp Ubunutu 14.04.2 Blank Screen

Installed Ubuntu to MacBook 2009 running Yosemite and using rEFInd. I managed to get Ubuntu to boot successfully once, straight after install. However, after a few minutes it locks up. Upon reboot, I ...
0
votes
0answers
17 views

Multiple Grub Theme Images

This is slightly related to a question that I have had previously (but have had yet to get an answer for). I would like to have multiples images for my grub theme. I was wondering if there if is a way ...
0
votes
2answers
39 views

Grub not finding Windows partition

I recently had a dual boot system with Ubuntu 14.04 and Windows 8.1, separated by partition. I had to do a clean install of Ubuntu on the partition with Ubuntu on it due to some problems I had with ...
7
votes
3answers
20k views

How to know the version of GRUB

How can I see the version of GRUB that is running in a particular Ubuntu version. A terminal command that can tell me.
0
votes
0answers
45 views

ubuntu 14.04 grub rescue no bios boot settings

Im new to posting on Ask Ubuntu, so I apologize in advance if this is in the improper place, though I thought this might be a unique problem after scouring endless posts. My problem began after ...
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votes
0answers
49 views

Failed to Install the GRUB boot loader on a hard disk

I keep getting cannot install GRUB boot loader, so I chose continue without boot loader. Then I get the message No boot loader has been installed. You will need to boot manually with the /vmlinuz ...
0
votes
1answer
26 views

No Windows Boot Option In Ubuntu

So I recently installed Ubuntu, but I didn't give it enough space. It started acting weird, so I restarted the computer. Afterwards, it just had a black screen after it started up. I tried the Windows ...
11
votes
4answers
16k views

How can I add the Memtest86+ options back to the Grub menu?

After having installed the 64bit version of Ubuntu 12.04 on my Lenovo B570 I ran into the same problems I had when installing 11.10 with Grub not playing nicely with a uEFI system. I used the same ...
1
vote
2answers
57 views

Dual boot windows 8.1 stuck

I have windows 8.1 and Ubuntu 14.04 in my system. I have used boot repair tool in Ubuntu to fix the grub. Now the boot menu is showing( Before it was not showing). I am also able to boot to Ubuntu. ...
0
votes
0answers
27 views

Windows 7 load from GRUB 2.02 beta, Fatal System Error [migrated]

So, I have a dual boot pc, with Ubuntu on one disk, and Windows 7 on another, in a separate partition. A couple of days ago, I tried to log in to Windows, and have been getting this message ever ...
0
votes
1answer
28 views

Grub halts on menu until enter is pressed

I have installed an Ubuntu server and it stops on the Grub Menu until ENTER is pressed without timing out and using the default entry. At first I thought that the problem was due to a reboot after a ...
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0answers
17 views

syntax error at line 245 update-grub & grub customiser

An error occurred while using update-grub & grub customiser. I removed grub 2 (sudo apt remove grub2) and reinstalled it (sudo apt install grub2) still the problem persists . screen shot ...