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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Ubuntu 14.04 software update causes system failure and messed up graphics

I allowed the software updater on my Ubuntu 14.04 machine to update various software packages today (1/25/2014). A reset was requested. I reset my machine and it now comes up with messed up ...
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4k views

Ubuntu 12.04 & Mac Os X - GRUB Rescue prompt SET commands made permanent?

I recently re-installed my Mac OS X partition. This somehow messed up my entire partition scheme it seems. First I got dropped to the Grub rescue> prompt when trying to boot Ubuntu. I had never ...
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Help! Installed Ubuntu on old PC - Grub manu disappeared

I installed Ubuntu on an old Toshiba Satellite (processor 1,6 Ghz, 448 Ram, 100 Gb), everything went fine, I could install everything and then it asked to reboot. But when I did, it wouldn't. Instead ...
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1answer
12 views

Enter Bios from Ubuntu 14.04

I changed Bios settings in my Lenovo IdeaPad Yoga13 running Win 8.1 as I was having difficulties in installing Ubuntu 14.04 LTS. In the process I also changed the UEFI to LEGACY. Later Ubuntu booted ...
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1answer
16 views

How to delete and merge old version of Ubuntu with latest 14.04?

I installed Ubuntu 14.04 on window boot of already dual booted system, but it still boot in start from old Ubuntu. full explanation. I had dual boot of window 7 and Ubuntu 13.10. ...
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8 views

Grub will crash on motherboard with AMD onboard gaaphics card

In Short: Grub crashes right at start on two mainboards with AMD onboard graphics. How can I get grub not to crash? I was using Ubuntu and kubuntu on a GA-880GA-Ud3H motherboard for a couple of ...
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1answer
10 views

How do I run `vbeinfo`?

The instructions in /etc/default/grub say to run vbeinfo, # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them ...
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1answer
4k views

how can I fix error: hd0 out of disk?

I am running Ubuntu 12.04 on a netbook - Acer AS 1410. After a download session, I restarted the computer and it said: error: hd0 out of disk. Press any key to continue... I pressed ...
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6 views

Can't Fully Boot from vmlinuz *.29

I'm having a problem fully booting from the latest vlinuz listed in GRUB. When I select the default Ubuntu option, the loader hangs on a memswap line, then hangs further down the process. Only when I ...
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1answer
52 views

Windows not booting anymore after using easyBcd

I decided to install a dual boot on my windows 8.1 machine. Everything was working fine, but I had the unattractive grub booting option. I wanted to have the good-looking graphical windows boot ...
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9 views

Can not get Ubuntu to go past grub

I just built a new computer and decided to go with Ubuntu, and now I am having lots of problem. When ever I try to boot Linux from grub it either freezes or is just a purple screen. The only way I ...
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14 views

Ubuntu 14.04 upgrade boot problems

After upgrading to Ubuntu 14.04 LTS from Ubuntu 12.04 LTS, I have a boot in problem. When starting the Computer, it first produces a orange rectangle (Ubuntu Colour), then a blank screen, and nothing ...
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5answers
32k views

How to delete grub entirely from grub rescue. Boot windows only

I had installed ubuntu (twice actually) onto the same drive. I wanted to 'try again' since one of them didn't install correctly and the other installed differently, but it worked. I was getting ...
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1answer
22 views

How to boot into different partition?

This arises from trying to upgrade to 14.04 from 12.04. The upgrade failed, so that when I tried to reboot I got an error: file not found message and the grub rescue prompt. (Up to that point, ...
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13 views

Any intuition into how I've messed up? UEFI dual boot woes, Win7 and 14.10

there. New poster long time lurker. I haven't used Ubuntu since Natty; forgive me. I recently burned an ISO of Ubuntu x64, and thought I'd dual boot with Win 7; My system has a spare HDD, so, I ...
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13 views

Dist-upgrade in Ubuntu 14.10 tries to remove grub-efi-amd64

A recent security (?) update in 14.10 Utopic Unicorn caused "apt-get dist-upgrade" in Ubuntu 14.10 to try to remove package "grub-efi-amd64", and replace it with package "grub-pc". I use grub-efi to ...
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1answer
38 views

No Ubuntu boot option in grub after installing Windows 7

I installed Windows 7 alongside Ubuntu 14.10 and hence I lost grub. I reinstalled grub using a liveCD and now the Ubuntu boot option only shows Windows 7 and 10s timer after which it'll boot into ...
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13 views

windows 7 not loading after dual boot on Lenovo T440p & 14.04

I just installed Ubuntu 14.04 on a new Lenovo T440p, I wanted to dual boot it along the already installed pre-installed Windows 7. Grub worked fine after several reboots and staring it on Ubuntu. I ...
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27 views

Can't boot after yesterday's update(20.01.15), except advanced option (last one)

Yesterday I've applied the update that showed up on my Ubuntu 14.04, and when when I returned I got a sad surprise: Ubuntu was going into a boot loop after selecting it normally from GRUB. I tried: * ...
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11 views

Blinking Cursor during Post-Installation Reboot

Though I understand that there are similar questions already posted on here about what I am going to mention, I feel that none of them directly address my issue at hand so I will try my best to ...
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1answer
20 views

GRUB Rescue after Disk Clone

I need a little help from a GRUB expert. I just cloned a 1 TB Seagate drive onto a brand new 2 TB Hitachi, and before swapping them out, I decided to boot-test it. It's tied to my computer through a ...
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13 views

“your screen, graphics card, and input device settings could not be detected correctly.”

So, I just put Ubuntu on my new HP laptop. I had to boot it using the "nomodeset" kernel. It finished installing and updating everything and it rebooted. When it boots up it goes straight to saying: ...
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2answers
892 views

Will Windows 10 “upgrade” affect GRUB2 and screw up my dual boot with Ubuntu? [on hold]

I turned off Windows update because I read about problems with BIOS tinkering within the updates. Will Windows 10 "upgrade" affect GRUB2 and screw up my dual boot with Ubuntu?
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2answers
3k views

Why can't I install GRUB on my USB drive?

I'm trying to install Lubuntu to a USB drive, but I'm having a difficult time installing GRUB to the drive. The rest of the install seems to go fine. This is what I have tried Went through the ...
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15 views

Need help, stuck in Grub rescue mode!

Help there Ubuntu community, I just had this problem where whenever I boot up I get transferred to Grub rescue mode. I have tried many methods from other users, but whenever I try to do 'insmod ...
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1answer
3k views

Got error 'GRUB installation failed' while installing ubuntu 12.04 lts on windows 8

I have Sony vaio with Windows-8. I also want Ubuntu 12.04 as my second OS. I created 50GB root partition and 4GB swap-area partition. But after some time(about 2 minute) while installation I got ...
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1answer
3k views

What location to put bootloader, when running multiple drives and partition

I have Win8 on my desktop, where a 120G SSD is used to run windows and some select applications, while I have a 2TB HDD to provide basic file storage and where possible, install applications instead ...
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1answer
4k views

Remove Grub Loader from Mac - USB Thumbdrive installation

I installed Linux from one bootable USB thumbdrive onto another bootable thumbdrive. That works. However, now my Macbook Air boots to "error: no such device: XXXXXXX... grub rescue>". If I hold ...
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18 views

Facing fatal error “unable to install grub” while installing UBUNTU 14.04

Recently I bought Dell laptop with i7 processor and Windows 8 is preinstalled.. I downloaded UBUNTU 14.04 and trying to install . But I am facing fatal error " Unable to install grub2". I tried ...
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108 views

Kernel panic - not syncing: No working init found - also Windows7 dual boot failure after second install!

Installation is on an MSI-7680 MB, with i7-2660 processor, 8G, and 1 TB disk. Procedure followed is per instructions on http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windows using the ...
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0answers
10 views

Grub not running after formating my first Ubuntu partition

I've had installed Ubuntu and Ubuntu Gnome alongside Windows 8 on my computer, but a few days ago, I decided to remove one of those Linux Ext4 partitions (Ubuntu, which Grub was also installed on it). ...
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1answer
4k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
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1answer
38 views

Asus booting and rebooting into BIOS

I have Ubuntu 14.04 on my laptop, (Asus VivoBook S551 R551LB) fully encrypted system (need pass-phrase on boot), it used to have Windows 8 but I installed Ubuntu instead. I just realized today that ...
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1answer
10 views

I have grub installed twice, what will happen if I remove the 1st install?

My hard drive: sda1: SUSE sda2: new Ubuntu, installed yesterday sda3: win7 When I turn on my PC it always uses the SUSE boot loader. When I format the partition with SUSE will my PC ...
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1answer
50 views

How to install Kubuntu from working OS?

I have dual-boot system. Now, I want to erase all packages and all home's files on my Kubuntu, i.e I need 100% clean system. I decided to make a bootable usb-stick. I tried to boot from it, got ...
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1answer
28 views

After Installing Win XP, could not able to load Ubuntu 14.04

My System was having Windows XP in C: drive, then I installed Ubuntu in F: Drive. Everything was going fine. But I re-installed Windows XP due to some reasons and I did take care of F: Drive where ...
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0answers
14 views

Grub not responding

I ran into a problem after installing Ubuntu without rEFInd on my Macbook Air 2013 11". I used my macbook's own bootloader to install it, and everything worked fine (I could use the USB drive to boot ...
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2answers
4k views

GRUB / os-prober doesn't see Windows 8.1 partition

I have a 1 TB HDD with seven partitions, one ~600GB for Windows and one ~300GB for Xubuntu and a bunch of assorted system partitions taking the rest of the space. I recently overwrote my Xubuntu ...
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0answers
14 views

Why ubuntu 14.04.01 starts up to some text screen always [on hold]

My Ubuntu 14.04.01 desktop corrupted with black screen and I reinstalled same but now, when I start it go to some text screen after restarting it works. I corrected it with Boot loader but now it ...
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2answers
3k views

Can't access BIOS and installing a windows hard drive

Built new computer: AMD FX-8320 Eight-Core Processor × 8 9.7 GiB RAM Graphics GeForce GTX 650 Ti BOOST/PCIe/SSE2 Ubuntu 13.10 64-bit Desktop Computer 1 TB HardDrive BIOS Type, UEFI BIOS ...
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1k views

cant install ubuntu on new asus g series laptop

I can't seem to install Ubuntu 12.04 LTS or 13.10 on my new Asus G750JM-DS71 gaming laptop. I've been using Linux and Ubuntu for my professional work for years and I've never run into such a ...
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0answers
22 views

Problems installing Windows 7 over Ubuntu [duplicate]

I am new to Linux. My problem is that when I try to install Windows 7 from USB I go straight to GNU GRUB menu or something like that (again I am new to Linux). When I access the UEFI (BIOS) and ...
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1answer
29 views

Problem with grub Ubuntu 14.04

I have just installed Ubuntu 14.04 on my PC and when I restarted the PC it told me that it does not have any Operating Systems installed, ok, so I tried to reinstall grub with the Ubuntu live CD ...
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0answers
23 views

Installing Ubuntu 14.10 alongside Fedora 21

I installed Ubuntu 14.10 after installing Fedora 21 but I cannot see fedora 21 installation in boot option. update-grub in Ubuntu recognizes fedora 21 but when I reboot I don't see the option. (I ...
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1answer
30 views

What is the difference between GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub

I'm troubleshooting a fn-key brightness control problem on my laptop, so I'm wading through a lot of config options in /etc/default/grub, as you can imagine. However, it's raised a question for me: ...
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5answers
117k views

I can't get grub menu to show up during boot

After trying (and failing) to install better ATI drivers in 11.10, I've somehow lost my grub menu at boot time. The screen does change to the familiar purple colour, but instead of a list of boot ...
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2answers
15 views

Regaining Ubuntu after installing Windows 7

I had Windows 8 and Ubuntu on two different partitions. I was using both the operating systems as per my needs as I had dual booting options. I have now removed Windows 8 and installed Windows 7 in ...
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1answer
25 views

MBR is on wrong drive (USB) now windows/ubuntu won't boot w/out usb connected

I somehow installed Grub on my USB drive, now Windows/Ubuntu won't boot unless my USB drive is connected. How do I move the MBR to my laptop - internal HDD? Acer 64; Windows 8; Ubuntu 14.xx
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2answers
57 views

How can I get grub2 to boot a different option only on the next boot?

I am setting up a dual booting headless linux / windows machine. I mostly want the machine to always boot up to Ubuntu, except for occasionally when I need to test something in windows. I've ...
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1answer
4k views

file error /boot/grub/i386-pc/normal.mod trying to repair boot, live dvd install probleml

I have seen that there are a lot of threads about this problem. I had Windows 8 installed on my series 3 samsung i5 computer and I tried to install ubuntu 13.04. This is what I did: Because of the ...