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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Update from 14.04 to 14.10 NO LOGIN SCREEN

So i updated ubuntu (kubuntu) to 14.10 just now, i am in desperate need to get it to work. I cant login. No login screen is showing. Just a blank screen. I have done everything possible (shell, root ...
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1answer
8 views

Ubuntu 14.04 LTS shuts down and restarts

This is my first question so I'll try to do my best. I have a Gateway laptop and I wanted a change, so I downloaded, burnt and installed Ubuntu 14.04 LTS from www.ubuntu.com/download. Once it was ...
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8 views

(Unused) swap causing fan noise? [Ubuntu 14.10]

I was running Ubuntu 14.10 for a while without any (fan related) problems. The fan was very quiet and would blow slightly when e.g. viewing HD videos etc. Then I had to reinstall Ubuntu due to a ...
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0answers
2 views

How to safely go from dual boot Ubuntu/Win8 to single boot Win8? [duplicate]

So I had a Win8 laptop which I turned into a dual boot Win8/Ubuntu creature. Now I want to go back to solo Win8 and I want to make sure I don't screw up the boot manager things. Currently it uses GRUB ...
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1answer
23 views

Cant get back to windows after uninstalling ubuntu

I have a surface pro 3 so I thought about dual booting it with Ubuntu, every thing went fine but I didn't like it because it had some bugs and I couldn't get the type cover to work so I decided to ...
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1answer
14 views

Help interpreting fdisk after boot problems

I duelboot Windows 8.1 and Ubuntu on my laptop (unfortunately I can't remember which version of ubuntu I have). I today tried to boot it up and received the message "error: no such partition" when ...
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0answers
36 views

Can't boot into Ubuntu with Windows 8.1 installed

So you've probably seen this all before, but I have searched around a can't find a fix anywhere. I installed Ubuntu 14.10 on a 10GB partition of my SSD, said SSD has a much larger partition with ...
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3answers
19 views

Grub2 rescue with Win7 & Ubuntu [duplicate]

I installed the Ubuntu 14.04 and a Windows 7 in the same HD. And everything was working, but I created another partition in Windows to store data. And now I can't boot. error unknown filesystem grub ...
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0answers
9 views

How do I stop GNU GRUB from booting and select the Windows Boot Manager option by default?

I've decided to uninstall Ubuntu due to various incompatibilities. I tried going in to my BIOS but that option is not there. It says Ubuntu on my hard drive.
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0answers
22 views

Unable to install Ubuntu 14 LTS (64bit) on Lenovo Ideapad S205

My Lenovo Idepad S205 seems to be in a worse situation than in the question here Unable to upgrade or fresh install Lubuntu 14.10 (32bit) on Lenovo Ideapad S205 Unfortunately the answer given there ...
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0answers
5 views

GNU Grub v.2 beta 2 9ubuntu1 always reboot?

I have here GNU grab version 2 beta 2 ubuntu 1. Yesterday, i just transferred the hard disk to another computer,because its previous motherboard is dead already. I cannot enter into ubuntu and ubuntu ...
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1answer
27 views

how to put windows 7 on linux mint or how to remove [on hold]

i already tried installing Windows 7 which it worked however when i installed linux mint basically windows 7 didn't show up in grub menu
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1answer
20 views

How do I install Ubuntu 14 with UEFI and software raid0 on GPT SDDs

I usually work on a Mac and would like to setup a Linux workstation for Development. I have no experience installing Linux, because the servers I work with are hosted VMs. Most of the Ubuntu specific ...
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1answer
32 views

Dualboot Windows 8.1/Ubuntu 14.04 No Windows Bootloader on grub2

So, I had Windows 8.1 and Ubuntu running fine on my laptop until Ubuntu updated to 14.10, after that Ubuntu could not load, just a Purple Screen and a Blinking CapsLock Key, so I booted into Windows ...
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0answers
25 views

Troubleshooting Dual Boot: No results from boot-repair

sorry to post another one of these, but I cannot for the life of me get this dual boot to work. I am using a Sony VAIO S, which has Insyde H20. I have no issue booting from a disc or usb, but I cannot ...
2
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1answer
26 views

How to boot to Ubuntu ISO image on drive?

I can't boot to the Ubuntu 14.10 ISO I have on my drive (running Ubuntu 14.04 as my main OS btw). I added these lines to the bottom of /etc/grub.d/40_custom: menuentry 'ubuntu-iso' { set ...
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1answer
26 views

Can't reinstall grub from Live CD after reinstalling Windows

How do I reinstall grub, after I have reinstalled Windows XP on dual boot system? I have Ubuntu 14.10 installed, and I'm trying to reinstall grub from Ubuntu 10.04 Live CD. However, I cannot install ...
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0answers
23 views

Dual boot Ubuntu14.04/WIN7 separate disks

posting this question after three days searching online and trying various things. I have two physical drives (each a 480GB SSD), one with Ubuntu 14.04, one with WIN7. I would like to get a choice ...
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0answers
40 views

How to repair Grub rescue knowing that I can not access bios?

I have made in creating a partition to install Windows 8.1, but I forgot that a hard disk can contain only 4 partitions, however when I created and when I start my PC screen put me error: no such ...
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0answers
17 views

dd: Trying to recover my file system

ubuntu: 14.04 By mistake I ran the following command dd if=/dev/zero of=/dev/sda2 bs=1024 count=1 and now grub is unable to recognize file system and so the linux is not starting. I think I have ...
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0answers
15 views

New SSD in optical Bay, Cant get boot order to select it first

(fairly new to Ubuntu) Running 14.04 on a Mac (a1278 Mac 5.1), no dual boot just Ubuntu. Just installed a new SSD in place of my optical drive. It was recognized, and I used "dd" to copy my ...
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0answers
40 views

Can't generate grub.cfg

Software Up To Date installed a new kernel for me yesterday ( Ubuntu 12.04, kernel 3.13.0-48-generic) After rebooting I ran grub customizer and got an error. Same from update-grub: Generating ...
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1answer
21 views

Grub kernel upgrade (two different systems)

My system is partitioned this way: hdda 500 giga (/dev/sda) ssd 20 giga (/dev/sdb) /dev/sda /boot(300 mega) /home(remaining space) (/dev/sdb) / (14 giga main system with ubuntu 14.04 x64) / (7 ...
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0answers
19 views

Cannot install grub fatal error

So I know this question has been asked to often. And I've tried most of them but none of them work. Tried using the boot repair and using the terminal but no good. I'm about to running dual boot on my ...
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0answers
29 views

Ubuntu does not boot successfully with btrfs root partition errors

I have a setup on my laptop in which there are three partitions relevant to Ubuntu: a ext4 /boot partition, a btrfs root partition on LUKS and a swap partition on LUKS. Sometimes, after an unclean ...
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20 views

Problem with Grub Rescue

When I start my PC I have a black screen telling me: No such partition ... Entering Grub Rescue Mode Grub Rescue To summarize, I would like to know if there is a way to solve this problem with a ...
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2answers
44 views

Can't boot into Windows 8.1 from Grub menu on Ubuntu 14.04 LTS

My computer specs - 2GB RAM, Intel Core2Duo @ 2.7 GHz, 250 GB HDD. I've Windows 8.1 in partition C:\ and when installing UBUNTU 14.04 LTS, I chose the option "something else" and selected ...
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1answer
6 views

Hide partitions on RAID0 in GRUB2

I'm trying to hide two Windows versions from each other. I know how to do this on a single drive, however, it seems to be somewhat more difficult on a RAID0. More precisely, I don't know how to ...
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0answers
18 views

Messed up bootloader and locked out of windows/xubuntu. With live CD I ran boot-repair, now windows works but not ubuntu

My computer directly boots in to Windows?. I ran boot-repair and I can see my Ubuntu partitions are unharmed, what can I do to fix my system boot-loader?
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0answers
12 views

UEFI boot hangs at grub with 82599ES 10-Gigabit SFI/SFP+ network adapter

I am using MAAS to commission and install machines. When I attempt to commission a machine with a "82599ES 10-Gigabit SFI/SFP+" network adapter the following happens: 1) TFTP Request — bootx64.efi 2) ...
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0answers
13 views

Using ssd drive as boot device

Installing Ubuntu 12.04 on a HDD after having selected a SSD-drive as boot device ended in an error whie installing grub. After that the SSD-drive didn't work any longer. What kind of damage on the ...
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1answer
12 views

Need help with reinstalling grub

so I installed windows 7 after installing ubuntu, and as you may already know I can't log back into ubuntu. I tried running boot-repair but it seems to be stuck on purging the kernels (I left it for ...
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0answers
16 views

problem with grub2 rescue error in uefi system

I am a user of Lenovo B480 I installed the windows8 in UEFI mode alongwith ubuntu 14.04 & I have a GPT partition table.and my ubuntu grub has gone.I tried the bootrepair disk its not working how ...
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0answers
8 views

Can't boot from cd/usb- already have dual boot setup

I've got an HP g6 that came pre-installed with Windows 8. I've got it set up for dual boot with Ubuntu 14.04. I haven't had any problems with that, however, I can't boot from usb/cd. I'm familiar ...
2
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0answers
32 views

How to boot Windows 8 installed in legacy mode using GRUB in EFI mode?

This question is linked to this: How to boot Windows 8 from a legacy MBR partition in UEFI mode via GRUB? But I can't access windows anymore, so I can't run bcdboot. Here's my partition tables: ...
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0answers
29 views

Can I keep my Ubuntu distro running if I replace Fedora with Arch in my dual-boot setup?

This is less of an Ubuntu question and more of a dual-booting question but I didn't find a better forum so I will post here. Currently, I am running Ubuntu 15.04 Beta and Fedora 21 in a dual-boot ...
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1answer
29 views

Ubuntu 14.04 can't boot after hard shutdown

I'm using Ubuntu 14.04 from wubi application with Windows 7 as partition. I was using ubuntu for some time. After that it freezes for some time and I shut it down by long press on the power button. ...
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0answers
26 views

Clean up /boot directory

After an update of my Ubuntu I came to the error, "I cannot update since /boot is full". The thing is, that when I compared the results of the two following commands $dpkg --list 'linux-image*', ...
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2answers
22 views

mitigation of grub attacks

I want to disable the sing user mode attack performed at the grub level by passing kernel parameters. I know a solution that is putting the grub password & bios password.but I want to know ...
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0answers
20 views

Not able to boot Ubuntu from USB

I installed Windows after installing Ubuntu, so I had to fix GRUB. To do that, I used a tool called "GRUB4DOS". After trying out a few switches, I let it be, since I did not understand how it works. ...
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1answer
36 views

two windows 7 boot options in boot menu

I have installed Ubuntu 14.04 with Windows 7 dual boot. After GRUB repair two Windows 7 boot options are appearing. Both are booting the same Windows 7 OS. The system recovery partition is appearing ...
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0answers
20 views

Ubuntu 14.10 doesn't shutdown on my Dell 15R 7520!

I installed Ubuntu 14.10 using usb installer on my laptop. The only issue with it is it won't shutdown or reboot at all. The system shows few messages and tries to kill all the processes but fails and ...
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1answer
45 views

Legacy mode, Grub can't load win8 even it's in grub list

I don't think I can handle daul-boot in UEFI mode, so I delete efi floder in Win8 iso as Microsoft suggests to install win8 in legacy mode. Then turn to install Ubuntu. I create some unallocated space ...
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2answers
34 views

Problem booting Ubuntu after removing Windows

so I've got a system that originally had Windows 8.1 on a regular HDD. I added an SSD and installed Ubuntu on it. After getting everything setup (this is my new media server), I decided to just ...
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0answers
12 views

dual booted Ubuntu everything works except it boots to grub2 command line

So I recently installed ubuntu as a second operating system on my computer, and everything is working smoothly except for this one issue. When I first boot up my computer it goes to a black screen ...
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1answer
41 views

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
10 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 ...