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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GNU GRUB V. 2.02 The GateKeeper of the Windows Installer

I am attempting to install Windows 7 Ultimate 64 bit to replace the Ubuntu OS that I have currently installed on my Lenovo T410 ThinkPad. The steps I have taken are: Download windows ISO file ...
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I'm stuck in grub rescue and cant boot linux

So I ended up in grub rescue and can't get out of it. With ls I can see all the different msdos#s but with the command: ls (hd0,msdos1)/ I get: Error: unknown file system. My understanding is ...
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56 views

“Missing operating system” grub2 failure

While trying to install Xubuntu after trying Fedora and disliking it(Still have a windows 8.1 installed), the partition manager was a bit confusing and I might have screwed something while trying to ...
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49 views

How to start my ubuntu 14.04 64 bit?

I bought lately an usb external hard drive Verbatim 1TB and I tried to install a fresh Ubuntu 14.04 64 bit. I have also in my laptop an internal hdd 320GB with my Windows 7. All the installation ...
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2answers
87 views

Black screen when logged in Ubuntu after Nvidia drivers update

Since the last update of my nvidia drivers on Ubuntu (15.04, 64 bit), I get a black screen when logged in Ubuntu. A second monitor does not help. Choosing the recovery mode on Grub doesn't help ...
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13 views

How do i boot into a backup from grub

I want to be able to boot into a backup version of my OS in case I accidentally change something so that i cant get past the grub menu. Is there a software for this? Is this possible with timeshift?
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2answers
43 views

I cannot boot Ubuntu 14.04 because HDD is too full, I can open the terminal, but cannot delete folders

I cannot boot Ubuntu 14.04 because HDD is too full. I can open a terminal, but cannot delete folders to make space because of read-only status. If I check ownership, however, they appear to be my own. ...
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1answer
22 views

Start an app from grub with minimal bootup time

I am trying to build a small retro gaming pc and choose to base it on Xubuntu/ubuntu/Xfce. If it is possible I want to set it up too boot as fast as possible directly into mame (maybe other games ...
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25 views

No Windows partition available after installing Ubuntu 14 LTS

After an upgrade of Ubuntu from 12 LTS to 14 LTS version GRUB failed to boot. With a boot repair disk ISO on my USB pen drive I found the Windows partition still exists and could be mounted, but the ...
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1answer
18 views

Restricting on-the-fly editing of grub2 menuentries

Is there a way to disable the e' to edit commands before booting option in the GRUB2 menu? I want all menuentries to be available to all users (so password restricting them is not an option) but ...
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1answer
27 views

First Installation Problem with GNU GRUB

When I try to install Ubuntu Desktop from a USB it gives me a GNU GRUB minimal command prompt instead of bringing me to the installation menu. I am trying to dual boot Windows 8.1 along side with ...
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1answer
36 views

Grub not booting up

Hey guys I have a question about grub. I am trying to dualboot windows7 and linux however I am recving a problem with grub. It will just boot into windows. I also delated the system reserved ...
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1answer
101 views

Stuck in GRUB after upgrading to 15.04

I upgraded a PC from 14.10 to 15.04 today with no errors, and rebooted. Now I'm stuck at GRUB. If I select 'Ubuntu' to boot, it reboots the machine. If I go to 'Advanced options for Ubuntu' and then ...
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2answers
56 views

I've tried every possible solution, my computer WILL NOT BOOT FROM GRUB

Okay, I went through the installation process to have dual OS; windows 8 and ubuntu 14.04. No matter what I do my computer WILL NOT boot from the grub menu. To clarify I have already: disabled ...
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1answer
22 views

Bootloader of Ubuntu

I bought a HP laptop with windows 7. After I installed Ubuntu 15.04 desktop. But after restarting only it boot with windows 7 only. How can I get both Windows 7 and Ubuntu after booting the laptop.
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4answers
29 views

Installing a third OS

I just installed Ubuntu on my second hard drive. I am in an Intro to Unix/Linux course and would like to install another version of linux on my second hard drive as well. Can I just make a partition ...
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1answer
13 views

Ubuntu and Xubuntu blank grub, boots fine

I had Ubuntu 14.04 (updated to 15.04) installed before and now have Xubuntu 14.04, both have the same issue. The grub menu is blank, as in there is no text, no sign that the grub is there aside from ...
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24 views

Ubuntu 14.04 freezes during boot

Ubuntu 14.04 freezes now almost every time I try to boot from Grub2. There is no problem with booting Windows. Every time I have to enter to recovery mode and run sudo apt-get update and then restart ...
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40 views

GRUB rescue and out of memory - killing process occurs when I start my laptop

Using USB booting, I installed Ubuntu 14.04.2 LTS 64 bit on my LENEVO Ideapad G50 - 70 dual boot with windows 8.1 - In order to overcome Ubi partman error 10 ( I think its RAID isssue) by using -> Try ...
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1answer
117 views

Invalid Partition Table after install

I've spent the past two hours trying to install version 15.04 on my dad's new laptop. I used my laptop to install the .iso to a usb using Startup Disk Creator and booted it from it with no problems. ...
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35 views

Problems with GRUB rescue mode

I've been having some issues with a laptop. This laptop was running Ubuntu 14.10, I was going to install Windows 8 on it through an USB stick, I formatted the drive through the Windows' setup, but a ...
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1answer
115 views

rEFInd Question: Remove multiple boot items?

Just installed Ubuntu on a separate drive (not partitioned with any other OS), as well as rEFInd, on my Mac Pro. I managed to get it all to start up properly and can boot to any of the locations from ...
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24 views

How to make grub in a USB recgonize a non-linux operating system?

Basically, i made just a lightweight and open-source operating system. I will be using grub2 to boot into the operating system, however it is not a linux distro. How i customize grub2 to boot into my ...
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1answer
47 views

Removing Kernels from grub

My grub has the following versions which I want to remove. Ubuntu, with Linux 4.1.0-rc5-next-20150529 Ubuntu, with Linux 4.1.0-rc5-next-20150529.old Ubuntu, with Linux 4.1.0-rc4-next-20150525 ...
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Unplugged old bad disk, ran update-grub, but old menu options (on unplugged disk) still appear

so this must be a common problem. I had an old Windows machine with a disk that started to go bad (just some bad spots, corrupted files). So, I installed a new disk beside the old one and put Mint ...
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34 views

Ubuntu and Ubuntu Server on the same laptop

I have installed Ubuntu 14.04 from a USB (using UNetBootin) on my laptop, on a freshly formatted hard drive, and then I installed Ubuntu Server 14.04 from a USB (made again with UNetBootin), and ...
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24 views

Error: unknown file system. Deleted ubuntu and got this

I was dual booting windows and ubuntu. Whenever I started my computer I'd get to choose between which OS to boot on. But now, I was on my Windows 7 and deleted ubuntu. I restarted my computer and got ...
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28 views

Linux full disk encryption password prompt completely unreadable

After a few updates ago , my computer as it boots up and asks for the hard disk encryption passphrase the menu is completely unreadable. This doesn't bother me too much, but I am curious if there is a ...
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47 views

Ubuntu Server not booting up after install

I have a HP ProLiant Gen8 server with two 3TB HDDs and 16GB RAM and a 16GB Kingston USB. And I'm trying to install Ubuntu server on the 16GB USB, i followed the steps in the installation process and ...
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2answers
62 views

How can I access GRUB in Windows 8.1

I have a laptop with Windows 8.1 installed. I installed Ubuntu Gnome 15.04. I can not access the GRUB to select Ubuntu, the computer just boots straight to windows. I have found the following ...
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1answer
17 views

How to find file on random partions then mount that partition

Im trying to write a batch script that will find a specific file (EX .homemnt) on a random partion then mount that partition to what ever location I want (EX /home).. Added notes: Will be used on ...
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1answer
75 views

How to boot directly into Windows 10 from grub on Windows8.1-Windows10-Ubuntu15.04 tripleboot system?

I have a tripleboot system having Windows8.1, Windows 10 and Ubuntu 15.04. When I choose Windows from grub menu, it takes me to Windows bootloader giving choice between Windows 10 and Windows 8.1. How ...
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1answer
45 views

Will updating the BIOS remove my Ubuntu EFI entry?

I have an HP ProBook G1 with Windows 8.1 OEM on which I installed Ubuntu 14.04 LTS in dualboot. This laptop has a BIOS that makes it difficult to change the default boot loader called at hardware ...
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28 views

Grub Error: Unknown filesystem(Tried with Boot-Repair also, Unable to resolve it)

I have a dual boot in laptop which consisting of Ubuntu along with Windows7, But my laptop is showing the error Grub Error: Unknown filesystem when booting. I tried everything in the web and followed ...
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11 views

Grub Error: Unknown filesystem(Tried stuff everything, but unable to resolve it)

I have a dual boot in laptop which consisting of Ubuntu along with Windows7, But my laptop is showing the error Grub Error: Unknown filesystem when booting. I tried everything in the web and followed ...
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1answer
33 views

Acronis Extended Capacity Disk

I have a Western Digital Black 4 TB Hard Drive in my PC running Windows 8.1. To get past my PC's 2 TB limit I have used Acronis Extended Capacity Manager to gain access to hard drive space beyond the ...
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1answer
40 views

Which partition to install Ubuntu in so as not to erase/make more bad things happen to Windows?

I'm trying to install Ubuntu alongside Windows, but not within Windows. I want to use Grub as the bootloader instead of the Windows MBR. I was installing off the liveDVD for 15.04, the amd64 version. ...
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1answer
25 views

Ubuntu will not boot all the way

Recently, my computer lost it's ability to normally boot ubuntu. I am very perplexed as to why it may be happening. An interesting clue: about a week ago, I was trying to move some files around into ...
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1answer
54 views

Migrating to new SSD, not booting! (GRUB not loaded)

I got my new SSD today, and used dd to burn the Ubuntu 14.04 image onto a USB. Then I swapped the internal HDD with my new SSD. I booted into the USB, and installed Ubuntu to the SSD. I manually ...
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16 views

Will Biosdevname stay disabled when I update my system?

I wanted my server, 14.04.2, to use the old style of network interface naming, e.g. eth0. I used the Biosdevname part of the answer found here, editing /etc/default/grub but not purging the ...
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13 views

Booting OS of Ubuntu 1.1.20.0-8ubuntu1

I have a problem in booting version 2.00-13ubuntu3 moving to recovery mode, it requires me to fill the initramfs using built-in-commands which i dont know how to add them. Help me
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22 views

Computer does not boot after changing hdd and reverting back [duplicate]

1) I have an existing HDD in my computer that dual boots linux and windows using the traditional bios way. 2) I then took out the existing HDD and swap in a new HDD to install linux on it with uefi. ...
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1answer
62 views

My ubuntu is corrupted

I have a dual boot - Ubuntu and windows 7. I recently wass playing around in the ubuntu and used the 'dd' command and it kinda corrupted my linux file system. I exactly dont know what happened to ...
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1answer
24 views

“The disk drive for /media/ext-hdd is not ready yet or not present” is shown every boot time

I used ubuntu 14.04 and windows 8.1 as dual boot. windows was in sda2 drive. I removed windows and sda2 drive became empty which was not writeable. I was able to write in that drive following this. ...
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26 views

What to do when I suddenly get an “attempt to read or write outside of disk 'hd0” error,and ubuntu 14.04 was working just fine the last night?

This morning when i turned on my laptop, it showed this error Error:attempt to read or write outside of disk hd0. Entering rescue mode... grub rescue>_ I immediately shut down my laptop and ...
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1answer
85 views

How do I fix boot problems after installing Ubuntu 14.04 alongside Windows 8.1?

I installed Ubuntu 14.4 (64bit) alongside the pre-installed windows 8.1 (64bit) on my laptop Dell Inspiron 7548 around 1 month ago (UEFI partition). For this purpose I used liveUSB according to ...
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15 views

Ubuntu Live on Pendrive: How can I default booting to Ram Test?

I would like to create some Ubuntu Live pendrive for booting Ubuntu, but most often testing RAM: So, as long as the most usual behavior of this boot manager would be the RAM testing, I would like ...
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33 views

Ubuntu Boot/grub message

I'm sure you have seen this question before and sorry to waste your time but I have 2 computers that use Ubuntu 14.04 and the laptop shows an error message when switched on: error: file ...
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1answer
22 views

Windows has not been removed from dual boot

I have removed windows 8.1 from dual boot Ubuntu 14.04 following this tutorial . I used the OS uninstaller as described in that tutorial. But still when i boot PC, I see that windows has not been ...
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3answers
35 views

Installed grub to wrong partition

I was helping a friend remotely to dual boot Ubuntu with Windows 8. He installed Ubuntu to /dev/sda7 and when it asked for where to put the bootloader, he selected the same (/dev/sda7) When he ...