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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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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12 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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6 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
8 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
7 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
15 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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7 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 ...
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0answers
23 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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25 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
24 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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22 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
20 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
17 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
29 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
11 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
41 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
29 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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11 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
34 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
9 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
36 views

BOOTMGR missing [on hold]

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
17 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
14 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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44 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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9 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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2answers
42 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
64 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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1answer
77 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
43 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
56 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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41 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
20 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
28 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
21 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
40 views

Dual Boot Ubuntu 14.04 LTS with “Something Else Option”

As per my previous question, I finally could dual boot Ubuntu 14.04 LTS with Windows 7 (Old School way, Not Alongside Windows 7)- so as I thought I had done it. But it was if not a huge, was disaster. ...
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0answers
17 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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26 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
32 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
51 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
26 views

Android X86 ISO and Grub 2 [closed]

I want to boot Android Iso with Grub 2. What should I write in the menu entry ?
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15 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 ...
3
votes
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
16 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
9 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
26 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
25 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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0answers
43 views

Cannot boot to window after install elementary os [closed]

Elementary os is a distro of Ubuntu so i posy my problem here. Last week, i install elemetary on on of my 3 partition so that i can dual boot it with window 8. After a couple day plaaying with eOS, i ...
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1answer
64 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.