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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Can't dual boot!

Today I tried to dual boot Ubuntu with Windows 7 Ultimate which I already had installed. I downloaded a program to boot Ubuntu directly from a flash drive. My first try was with version 14.04.3. The ...
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1answer
29 views

Why is grub still in my bios?

I installed Ubuntu before when I was using Windows 8.1. Now I have installed windows 10 after a removing ubuntu. I did a clean install of windows but still have grub in my bios. When i boot into it it ...
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1answer
21 views

How do you delete old ubuntu partitions?

I have done a fresh install of Ubuntu 15.04 in order to upgrade from Ubuntu 14.10. After installing, Ubuntu 15.04 created a new partition. I wanted to merge the two partitions and if you can suggest ...
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1answer
8 views

grub rescue in formating a os in dual boot

my system is dual booted with Ubuntu 14.04 and kubuntu 14 being vexed with Ubuntu i formatted the disk containing Ubuntu a error like grub rescue is been displayed to access kubuntu what should i do ...
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29 views

hd1 cannot get C/H/S values

Ok, I know there are many questions about this topic, but I can't found a convince answer (fixing the problem or not). Recently I bought an SSD drive and installed in main SATA (hd0), I've replaced ...
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1answer
30 views

I deleted my ubuntu partition (win8 dual boot) without first resetting my uefi boot settings. How can I recover my laptop from grub2.02?

When I turn on my computer, I see the grub2.02 command line. It says "GNU GRUB version 2.02~beta2-15 Minimal BASH-like editing is supported. For the first word, TAB lists possible command ...
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1answer
31 views

Ubuntu not starting, can I at least remove it? [duplicate]

Yesterday I installed Ubuntu in dual-boot with Windows 8.1, it worked fine, maybe I touched something that I shouldn't have, but now if I start Ubuntu in the GRUB I get the ubuntu logo and then a ...
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13 views

Boot from DVD by grub to install windows [duplicate]

how i can boot from dvd to install windows behind the Ubuntu by Grub?
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1answer
30 views

Why there is no GUI assisted RAID configuration and why RAID is so problematic in Linux? [on hold]

Linux (particularly Ubuntu) slowly becoming a growing OS among PC enthusiasts, content creators and gamers. And most of them have high-end computers with SSD raid setups, latests GPUs and many core ...
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1answer
27 views

Is there a problem with the compatibilaty of my chipset?

I've recently built my own PC and i want to run Ubuntu on it. however when i try to boot ubuntu from my usb drive it says: ACPI PCC probe failed I tried installing with nomodeset and the install ...
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1answer
27 views

No such partition grub rescue - after windows upgrade

I have Windows7 and Ubuntu 14.04 installed on my laptop. Windows required an update, which failed with an error. My laptop has a restore to factory install option, which I attempted. This has ...
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0answers
12 views

Grub problem at 14.04.3

I have 14.04.3 installed. Here we have power breakdowns. Very often (so not always) when Ubuntu reboots, it comes with the grub menu and I have to choose how to boot. How can I get rid of this menu, ...
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4answers
197 views

Selected manual install and now grub can't find moddep files [closed]

I recently re-built my PC and decided to re-install my OS'es. I had Windows 8.1 and Ubuntu 14.04, now I'm installing Windows 10 and Ubuntu 15.04. I followed this guide: ...
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4answers
141 views

Windows 10 upgrade attempt destroyed both my Ubuntu and itself (windows 8.1). How do I wipe/format my hard drive to start fresh and try again?

I had been dual-booting with Ubuntu and windows 8.1 for a while now without issue. However, when attempting my free upgrade to windows 10, it killed both. I am not entirely sure why, but it looks like ...
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1answer
7 views

I boot to a grub prompt. How can I fix this?

I duel boot Windows 8.1 and Ubuntu 15.04. I tried to install kubuntu over an installation I had of Ubuntu. However, the installer crashed in the middle of the actual installation process. Afterwards ...
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0answers
16 views

GRUB2 menu not using correct colors, submenu does [closed]

Using Linux Mint upgrade function (17 Qiana -> 17.1 Rebecca) I lost my colors set for GRUB menu. It has added an submenu "Previous Linux versions", when I navigate in there, the color is correct. BTW: ...
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1answer
36 views

I deleted Ubuntu and accidentally deleted Grub with it. Other OS's aren't booting now. How do I fix this?

I was running a dual-booted Ubuntu/Windows 8.1 PC. I deleted my Ubuntu partition so I could install Arch, but in doing so I also accidentally messed up Grub and deleted my Windows EFI partition. I ...
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1answer
89 views

Windows 10 and Ubuntu dual boot issues

I currently have Windows 10 Pro x64 installed (no upgrade because my PC is custom-built). Whenever I boot into the Ubuntu 14.04.2 live USB, it doesn't give me an option to install it alongside ...
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3answers
46 views

boot straight into windows no grub :(

so i installing windows fresh install i installed ubuntu but i forgot to disable secure boot as some one told me it could cause problems with boot loader so when installed finished it went straight ...
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1answer
30 views

How to access the grub boot menu in order to generate bootchart?

I am running Ubuntu Gnome 15.04, and I am wanting to generate a bootchart to help me diagnose some system problems, however in the guide it says: So how do I access the grub boot menu in order to ...
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1answer
38 views

Dell XPS is not starting

My Dell XPS (with ubuntu preinstalled on it, EDIT1: it was bought on 2014 June-July) does not start. Pressing power on button, a black screen is showing this text: Missing operating system. Operation ...
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0answers
8 views

Deleting Windows from triple boot

I first had windows 7 in my laptop. Then I installed windows 8.1 in different partition (dual booted). Then I installed Ubuntu in different partition. Now it shows me grub showing option to boot ...
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1answer
28 views

After upgrading GRUB, cannot boot Windows from rEFInd

I'm triple booting Ubuntu, Windows 7, and Mountain Lion from a single hdd in my Macbook Pro 5,3. Somehow, when I got everything set up, I had two options to boot Windows from rEFInd: one that read ...
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1answer
21 views

Booting from flash, can't escape grub rescue

I recently wanted to reinstall Ubuntu on a partition on my PC. I used Gparted to delete the partition so that I could start fresh. I tried to boot to the usb, but it went into grub rescue mode. I ...
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18 views

Installed Ubuntu 5 times and never once did grub install

Forcing a grub install and selecting Ubuntu makes it hang infinitely. There is a bug in this product when installing it along Win 7.
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2answers
46 views

Dual boot - Windows missing after installing ubuntu

I am posting a question and also post the answer as I don’t know other way around to help others. I Have been struggling from last 1 month to make dual boot on my hp laptop its hp g6-2313ax, however ...
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2answers
58 views

Bootloader problem

I don't know why or how... But my boot loader have been destroyed. In this moment I have installed on my PC Windwos 8, Ubuntu 15 and Ubuntu 14 but just Ubuntu 15 have visible on bootloader.. I've try ...
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0answers
55 views

Restore grub after windows 10 installation

I was dual booting ubuntu and Windows 8 happily until I upgraded to windows 10. Windows 10 boots fine but I can't boot Ubuntu. If I choose the ubuntu partition from the boot menu I'm given the grub ...
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0answers
22 views

So if a line of code is missing where would I add it?

So as I've seen in so many other links to password protect grub the all say to change a that goes like this, printf menuentry '$(echo "${LONGNAME} $onstr" | grub_quote) but for me it's not in there so ...
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3answers
50 views

Stuck at Grub, can't boot Win7 installation USB

A friend of mine asked me to fix his laptop, and to be honest I'm completely stumped, but he doesn't want to take it to a repair shop. I'm hoping I can get some help here. I haven't done much with ...
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0answers
29 views

Difficulties customising Grub2 in Ubuntu 15.04

After a fresh install of Ubuntu 15.04 and the usual run of configuring wireless drivers, I went to remove the ugly purple background from the grub menu (I am dual booting with Windows) and add my own ...
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1answer
29 views

Goes to grub rescue after removing the partition with linux

I deleted the partition that had Ubuntu on it to get rid of dual boot, and now every time I try to boot to windows it goes to grub rescue, saying error: no such device 22623f... When I type ls is ...
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44 views

/home partition deleted after installing windows 10

I had the following partition organization Disk 1 (HD 500GB) 100MB (Windows recovery partition) primary 100GB (Windows partitions) primary Extended Partition: 100GB ext4 linux partition (/home) ...
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1answer
21 views

Trying to change default OS but permissions won't allow changes to /etc/default/grub

I recently performed a reinstall of Ubuntu 14.04.3 on my hard drive. All of my files were salvaged, but I'm having some issues that I didn't have before with my root directory. I'm trying to change ...
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2answers
41 views

What is the difference between booting into Ubuntu normally and in recovery mode?

I have seen that the grub menu entry for recovery on my Ubuntu is : linux /boot/vmlinuz-3.16.0-45-generic root=UUID=c1f08a7e-c1e0-4409-97cb-8094359408cb ro recovery nomodeset but I didn't find ...
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0answers
20 views

The disk drive for /home is not ready yet or not present

i, install ubuntu 14.04 recently dual booted with windows 8.1, when bootin it i created a /home partition of the HDD and when i restarted, the grub to select win. or ubu. wasn't there. i was booted in ...
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2answers
42 views

I have forgotten my password to my laptop, and can't access GRUB

I forgot my password to my laptop. I know the passcode in the startup that is displayed on the bottom with white stars. But, not my actual account password. I can only use it in guest mode, and that ...
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0answers
23 views

Install boot loader in same partition as Windows Boot Manager

im returning to Ubuntu after a long time. I tried it in a live USB and i decided to install it. I made my "/" partition (its really neccesary to make a "/home" partition?, i dont intend to update any ...
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29 views

Grub doesn't load. Tried boot-repair

Here is the log: http://paste.ubuntu.com/12114211/ I've used a live USB stick to run the boot-repair but the loader still doesn't work. I can't boot Windows 8.1/Ubuntu from the Hard disk. Win8.1 ...
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2answers
23 views

Can I use a CD instead of a USB for boot-repair

Am I capable of using a CD instead of a USB for using boot-repair to fix my grub boot loader after upgrading to windows 10?
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1answer
50 views

Changing Default Grub Menu, Not Default OS

My question is in regards to changing my default GRUB bootoader. Not the boot order, font, image, etc. I have successfully triple booted both of my laptops. Their default OS's were both Windows 8.1, ...
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0answers
21 views

Multiple GRUB_CMDLINE_LINUX_DEFAULT settings for different resolutions on Hyper-V

Ben Armstrong (Microsoft Hyper-V Virtual Manager) suggested in his blog to edit /etc/default/grub and add a parameter to GRUB_CMDLINE_LINUX_DEFAULT to change display resolution on Hyper-V. It's ...
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0answers
48 views

How to prevent the people from using 'e' to change the 'config' in grub?

I'm really stumped this time because, I've tried to configure the 10_linux & the 00_header the /boot/grub/grub.conf I've tried it many times, but unable to protect it with Password Please do ...
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2answers
46 views

Ubuntu and Windows boot trouble with work laptop…HELP

I'm pretty new to linux and have only had a little exposure to it. From what I've seen I really like it. What I've done is I have a laptop from my employer that I take with me on business trips. ...
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1answer
24 views

How to setup dual boot (non windows) and switch later

I wish to be able to dual boot into an OS (windows CE) and ubuntu, with the option to switch the default boot order later (by modifying a file on the FAT partition holding windows CE). Windows CE can ...
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0answers
17 views

Grub entry for Windows 8 boot not working [closed]

I have a dual boot configuration (Linux Mint 17.2 and Windows 8.1) on a Lenovo G505. I can boot into Linux Mint without issue but cannot boot into Windows 8.1. My boot info summary states there is ...
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1answer
59 views

Ubuntu installed on USB, boot loader installed on hard drive

Goal: Install ubuntu 14.04 to my 32gb usb (not persistence/live-usb), and be able to boot with this usb on different computers. What happened: 1) Used a small 3gb usb and format it to live boot ...
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1answer
149 views

Can't boot into Windows 10 after installing Ubuntu 15.04

Here is the bootrepair link , if someone can help I would totally appreciate it thanks. http://paste.ubuntu.com/12105065/
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1answer
44 views

Boot failure after upgrading to Ubuntu 15.04

I have Sony Vaio Fit computer with a dual boot setup of Windows 8 and Ubuntu 14.10. After upgrading to 15.04, booting into Linux fails with a number of 'builtin file not found' errors. I tried ...
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0answers
12 views

encrypted drive, /boot on usbstick that is now lost: how to recreate it from backup?

Very quickly, here is my situation: Ubuntu 14.04 Entire hard disk is encrypted using LUKS boot partition was on an external USB thumbdrive. :-( bootable thumbdrive is gone for good :-) I had a ...