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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Maintaining multiple Linux distros - boot and grub partitions

Here is my GParted view of /dev/sda The unallocated blocks were once another Ubuntu distribution - I will resize my other partitions to consume them soon. /dev/sda2 holds my Debian installation's ...
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Installing GRUB2 on Intel RAID1 volume fails to boot

I've come here as a kind of last resort, hopefully someone will be able to help me. I work for a company which sells POS systems, recently we started using the HP RP5 5810 PC as the heart of our ...
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1answer
13 views

Ubuntu 14.04 is not recognizing Red Hat 6 Enterprise Linux to do Dual Boot

My biggest issue is having Ubuntu recognize RHEL as an Operating System. I initially installed RHEL first and then tried Ubuntu. When installing Ubuntu, I wouldn't get the statement that says, " we ...
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1answer
19 views

Unable to Wipe my SSD from linux

I have an SSD which I've installed Ubuntu on, it was completely clean. I installed it and encrypted it. I decided I wanted to wipe my hard drive for a new install without encryption. I'm unable to do ...
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1answer
4k 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
23 views

Ubuntu and Windows

I installed Ubuntu to other partition and I didn't delete the Windows partition. I installed successfully but İ can't open Windows. I doesn't come up in grub at start up. It is the output of sudo ...
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7 views

I no longer detect any OS or hard drive after updating from 12.04 to 14.04

I updated the my system from ubuntu 12.04 to 14.04. I had installed the OS on the partition /sda. After I restarted my system, I was taken directly to boot menu and the boot menu no longer showed that ...
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2answers
3k views

Recovering GRUB after installing Windows 7 with boot repair

Recently I've reinstalled the Windows copy I had alongside Ubuntu, and after that the GRUB menu disappeared and the computer starts off on Windows automatically. The solution I found was to run boot ...
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6 views

error: unknown file system entering rescue mode

Hi all i really want help with a pc running ubuntu 14.04 LTS only from 2 days ago and its stuck on GRUB RESCUE and i tried a lot of things that i found on the web and nothing work for me...like i ...
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1answer
13 views

Boot ISO file via GRUB2

I'm migrating my multiboot USB drive from syslinux+grub to grub2. I'm now searching a way to boot my ISO files. I'm searching for a chainload method. So I don't want to add kernel and initrd ...
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1answer
103 views

Installing Ubuntu after failed installation with flash drive (no disk drive)

I'm trying to install Ubuntu (version does not matter to me) alongside my Windows Vista Operating System. My laptop does NOT have a disk drive, so I have to use the bootable flash drive option. ...
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19 views

Ubuntu won't boot after installing on MacBook Pro 6,2?

I installed Ubuntu Trusty Tahr(14.04) on my MacBook Pro 6,2. But, after installing all the updates, and restarting, I can't boot anymore. I installed The rEFInd Boot Manager, on my MacBook. At boot ...
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4 views

loopback module for grub with secure boot

I am building a multi-boot usb stick with ubuntu derivatives. I followed several tutorials found online: essentially, you put the isos on a usb stick and then you boot them using grub, which is ...
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1answer
29 views

ASUS X555LN Brightness fn key not working in Ubuntu 14.04

I have installed Ubuntu 14.04 on my ASUS X555L Laptop using an nVidia GeForce 520M Graphics card. The fn+f5/f6 keys are unable to adjust brightness. Currently my screen brightness level is maximum. My ...
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2answers
303 views

Ubuntu installation VS UEFI on Dell XPS 13 9343

I have heard that there are problems with Ubuntu on the Dell XPS 13 9343, however - I cannot even make the boot menu pop-up when booting from an installation pendrive (lastest Ubuntu, lastest ...
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13 views

Keyboard will not work for encrypted login

I'm running Ubuntu 15.04 (Ubuntu gnome). When I start the computer, it shows the gnome logo and asks to enter my encrypted password to unlock the disk. However, I cannot enter the password. Nothing ...
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1answer
662 views

2 windows loaders after grub2 repair

I have recently reinstalled w7 and had ubuntu 12.04 lts installed on it,w7 installation deleted the grub2 loader,after that i found solution to use boot-repair from live-cd session, BUT......now i ...
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0answers
19 views

How to choose which OS to start in dual boot with Touch Screen and no physical keyboard?

I (now) own an HP Slate 2(b2a28ut) which it's a fancy piece of technological art. It does look like a tablet itself and it acts like an Android Tablet because of its Capacitive Touch Screen, but it is ...
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37 views

Ubuntu 14.04 on is not booting, bootmgr is missing, press ctrl + alt + del to restart

My system refuses to boot normally from the SSD, I tried to run boot-repair from a USB, after reboot the problem persist, here's the Boot repair info script Boot Info Script e7fc706 + Boot-Repair ...
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4answers
8k 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
6 views

How to get out of grub after failed update, WITHOUT a cd reader

I tried to install the new version of ubuntu. It took a long time and i let it go on while i slept. When i woke up there was a black screen with commands saying something about the battery. I tried ...
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13 views

Everything except GUI is black

Since I installed Ubuntu 14.04 on my laptop, I have many problems on it (that I don't have on Debian 8) Indeed, when I switch to TTY with CTRL + ALT + F(1-6), I get a black screen, same problem when ...
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2answers
26 views

Messed up grub boot order

While I was messing around with my boot order I moved efi firmware to the top and restarted my machine. Now I am stuck in a loop of uefi and boot orders trying to get back to my desktop. How do I fix ...
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13 views

grub2 not working, showing purple screen after selecting ubuntu or windows

grub2 wont boot anytithing, it just shows purple screen after i select windows or ubuntu but when i install grub legacy ubuntu works perfectly but i cant add windows 8 to grub legacy. Any help is ...
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22 views

Can't Boot Ubuntu 14.04 after software updates

I installed Ubuntu 14.04 into my per-installed windows 8 computer and uses dual-booting for a wile with out any problem. Three days ago Ubuntu flagged me with some software updates and I let to ...
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16 views

Error Booting to Windows after removing Ubuntu

I wanted to remove Ubuntu to reorganize my hard disk, I deleted Ubuntu partition then I run this command in Windows repair "bootrec.exe /fixmbr" but when my Laptop boots it shows a screen says ...
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72 views

Help creating Custom Grub2 Entry for Parted Magic 2015 (Have working 2013)

I love parted magic, I want to be able to use the newest version. I got my custom entry from Help Ubuntu and tweaked it a bit to my system and made it simpler. It works with the version from the ...
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1answer
32 views

Operation System not found after installing Ubuntu 15.04

I had my perfectly working Dell XPS with several ubuntu based distros installed on it (ubuntu 14.04, 15.04 and elementary luna and freya) Then I tried antergos and installed it to one partition. ...
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18 views

What is the kernel command line to completely disable bluetooth in /etc/default/grub?

What is the kernel command line to completely disable bluetooth in /etc/default/grub? I need 25 characters to ask such a simple question because of "quality standards"?
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0answers
19 views

How to add windows 8 to Grub 2 [duplicate]

Ok, my computer has windows 8 preinstalled, i wanted to have dual-boot so i tried to add ubuntu in the easyBCD, now i cant boot to windows and in grub2 only ubuntu appears. I ran the boot repair and ...
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3answers
43 views

Old kernel version still running after several updates

Currently running 3.11.0-18, but many other later versions are installed. For some reason the updates aren't getting selected for grub: $ uname -r 3.11.0-18-generic Listing kernels: $ sudo ...
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24 views

Problem with Multiboot and Grub

Sry for my Bad English, I am from Germany:D My Problem is that my Grub bootloader had a problem a few days ago,I couldn't change the options with Grub Customizer or anything. It says that a file is ...
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23 views

Black screen with white underscore not starting and no option for reboot [duplicate]

After installation from bootable USB it worked well, but when restarted after some time,this black screen occured. Any fixes for this? And the purple screen also doesn't come. It only stops at the ...
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6answers
3k views

Ubuntu 12.04 LTS on pendrive

I've got a problem with installing Ubuntu on Pendrive. Steps I made: Downloaded ISO from Ubuntu site. Burn it on DVD. Run PC from the DVD (pendrive is plugged in). Followed instruction on the ...
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0answers
21 views

Can't boot into Windows 8.1 after installing Ubuntu (Elementary Freya) [on hold]

I wanted to try out Linux so I installed Elementary OS Freya (which is apparently an Ubuntu fork) following these instructions, but I lost the ability to boot into Windows now as it doesn't show up in ...
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2answers
21 views

Windows gone and ubuntu not working [duplicate]

I installed ubuntu alongside windows 8.1 and i installed correctly by creating partitions and the laptop finally says restart to use ubuntu but when i do , it agains diplays a gnu grub version showing ...
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1answer
20 views

Backup live server, migrate to new hard drive (simulating recovery from hard drive failure)

Goal: to take image of live system, transfer to new drive (from MBR, to GPT), separate /boot from / partition, and not have to go through tedious system re-install and re-configure from fresh. ...
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3answers
4k views

Black screen when trying to install ubuntu 13.10

I am in need of some help. It has been 2 weeks since I bought my first ever windows laptop with the aim of replacing windows but I have been unsuccessful. The hardware is as follows : Asus 15' F550D ...
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0answers
22 views

Windowse/Ubuntu dual-boot disk separation

I have a HDD and an SSD. I have a win8 and Ubuntu in two separate partitions on my SSD. First win8 has been installed and then Ubuntu. Boot-loader grub comes up and I can select my OS. Now, I feel ...
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1answer
23 views

getting issue when booting system in Ubuntu 14 in laptop

I am getting these kind of errors when booting system: READ FPDMA QUEUED (DRDY ERR) READ DMA EXT What I need to do for this? Is this HDD issue? I should replace it with new HDD?
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19 views

Sound is gone after booting system in text mode

I started using GRUB_CMDLINE_LINUX_DEFAULT="text" grub argument for my boots, and recently noticed that the sound is missing. I start GUI from terminal using startx command, here's my .xinitrc ...
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0answers
9 views

Boot Live CD from HDD and unlock HDD

I boot Live CD from HDD with following grub menu item menuentry "Ubuntu 14.04 ISO" { set isofile="/boot/iso/ubuntu-14.04.1-desktop-amd64.iso" loopback loop (hd0,5)$isofile linux ...
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1answer
14 views

grub(violet screen) did'nt apppear

previously i had windows 7 and windows xp.I formatted the drive containing windows xp .i installed ubuntu 15.04 through USB and allocated the previously formatted drive to it.ubuntu installed ...
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0answers
11 views

Error: no such device after removing ZorinOS (Ubuntu based) on Second hardrive [on hold]

I had windows on my first hard drive and then installed ZorinOS (Ubuntu based) on my second hard drive. I removed it like Zorin said but now I get the No such device error no matter which drive I boot ...
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0answers
178 views

ACPI PCC Probe failed. starting version 219 Welcome to Emergency Mode!… ERROR-MESSAGE

Hello i recently noticed the following error at System-boot and was basically stuck at the Emergency-Mode. I even reinstalled Ubuntu 15.04 right after this error, but without deleting the other ...
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2answers
45 views

Brand new to Ubuntu - can't get into recovery mode

After a mistake, I changed my password but can't remember it now. I've found out that you can reset it by going into recovery mode, but I can't seem to get there! I have Ubuntu 14.04.2 running ...
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0answers
14 views

Keyboard is not working on PC with Ubuntu

I have a Toshiba laptop running Ubuntu. I got it from my friend that way. I don't know much about Ubuntu. It look nice and stuff but the laptop keyboard is not working on it. When i click the caps ...
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1answer
30 views

Ubuntu 14.10 | Logitech Unifing | No Keyboard nor mouse during Grub choice menu

Almost all is in the title ! I'm unable to use up/down arrows on my K800 wireless Logitech keyboard (No advertising, just trying to be accurate!) Once grub choice menu passed after time out, both ...
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0answers
24 views

after installation problem with ubuntu booting

I had completed my dual installation of Ubuntu using wubi with Windows 8.1 using a live USB and it displayed the message to restart and remove the USB but after completion too the boot manager is not ...
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1answer
1k views

14.04 Freeze on Splash after Installing NVIDIA Drivers

First of all, I have looked at a bunch of threads that are similar, but none of the solutions work for me. I am trying to install nvidia drivers (nvidia-340, specifically) but when I reboot the system ...