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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Moving grub from one disk to another

I have 13.04 installed on my hard drive in my laptop, I now also have 13.10 on an SSD in the same machine. At the moment to boot 13.10 I have to set in bios to boot my hard drive (which is not the ...
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4k views

Ubuntu 12.04 & Mac Os X - GRUB Rescue prompt SET commands made permanent?

I recently re-installed my Mac OS X partition. This somehow messed up my entire partition scheme it seems. First I got dropped to the Grub rescue> prompt when trying to boot Ubuntu. I had never ...
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2answers
1k views

Dualboot ubuntu 11.10 and windows 7. Want to make sure grub resume the right OS after hibernate

I installed windows7 and ubuntu 11.10 on my asus laptop. I have a large data partition (NTFS) shared by both OS, so I want the laptop wake up to the original OS after hibernate. However, GRUB ...
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2answers
19 views

Ubuntu 14.04 booting, behaves like a spoiled child

I've unsuccessfully tried to boot again in Ubuntu after 1 week of not using it. It clearly punishes me for that. Joke aside, please know that i'm using "vanilla" Ubuntu. I didn't tinker with it. All ...
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1answer
17 views

Right way to completely clean up old kernels in terminal

I have been going through various questions about how to clean up old Linux kernels. They all seem to have different answers and they are old, so someone is bound to say the question is too old and ...
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1answer
15 views

Ubuntu not booting on SSD

I have an SSD which I installed both Windows 7 and Ubuntu 14.04.1. When I installed Ubuntu I allocated 500 MB to /boot and the rest of the Ubuntu partition to /. The installation completed and now ...
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2answers
5k views

No boot option after installing Ubuntu 12.04 LTS on Acer Aspire 4736z with Live CD

I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7. Before that i was having an ...
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2answers
333 views

Trying to dual boot ubuntu14.10 with windows10, last one not detected(semi-solved)

i have a laptop and im going to install ubuntu (i have experience, i have successful installed archlinux,ubuntu fedora,debian,xubuntu,kubuntu,manjaro etc etc) but installing 14.10 alongside w10 ...
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110 views

How to boot into a command line? (tty0)

I need a little help on xubuntu, I would like boot into the tty1 (command line) instead of the default login manager, I've tried to type into the grub configuration file with changing the line « ...
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1answer
51 views

Is it still possible to install Ubuntu to an external harddrive with UEFI?

It looks like installing Ubuntu to an external harddrive isn't possible with UEFI, where as with MBR there wasn't a big difference between external and internal. Is that true or is it still possible? ...
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42 views

Installed Ubuntu 14.10 on MacBook Pro (5,5) without rEFIt or rEFInd, hangs on purple screen

I recently inherited a mid 2009 13" MacBook Pro. I wanted to install Ubuntu 14.10 on the machine rather than OS X. I've previously had success with Ubuntu 13.10 on a 2006 MacBook by booting to live ...
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15 views

Grub2 Add Kernal Boot Flags

In grub I need to add kernel flags to one entry but not another. I plan on doing this by adding a custom boot loader. If this is the script I plan on using to boot the OS, where do I place the kernel ...
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1answer
80 views

Dual Boot Windows and Ubuntu, Grub Problem

I'm a linux novice trying to get a windows/ubuntu dual boot working. I can access both OSs ok, but only by navigating through a series of strange BIOS menus for Ubuntu (Windows boots automatically). ...
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4answers
295 views

Confusion about dual-booting Ubuntu and Windows 8. CSM or UEFI?

As far as I have heard, dual booting (Ubuntu and Windows) in UEFI isn't very clean, and hence people prefer CSM when doing so. But, in case my laptop has Windows pre-installed in UEFI, I need to ...
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1answer
20 views

Grub 2 detects incorrect partition for windows

Windows 7 is present on /dev/sda3, but grub 2 detects Windows 7 on /dev/sda1. How can I configure Grub 2 so that it will always point to /dev/sda3 for Windows 7, even if later on I do a sudo ...
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1answer
24 views

grub recovery after partition deleted

So after getting an error when trying to update my Ubuntu partition I decided to delete it and start over. Did it from windows and now I can't boot into either. Did some research and every thing I ...
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1answer
9 views

How can I set up muti-booting by grub on a usb with different OS .

How can I set up multi-booting by grub on a usb with different OS . The purpose is I want to choose the different OS when I plug in the USB.
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20 views

USB drive does not appear in BIOS boot order

I installed Ubuntu 14.10 along with Windows 8.1. Obviously I used a USB drive to install Ubuntu. I made all changes to UEFI so I could boot from USB. I could see the USB in the Boot Menu and was able ...
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20 views

Windows Boot Loader Calls Old GRUB Version

I have two hard drives and two GRUB versions. Windows still relies on the old version that I want to remove. How can I make Windows Boot Manager talk only to my new GRUB version. I started off with ...
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2answers
91 views

Black screen, can't even get to boot menu

Ok, so I'm a noob. I just needed to install tails and I was going to be done with ubuntu. I burned the image to a DVD then restarted it to boot from tails. (Incase it might be related to anything the ...
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24 views

Boot Failure 12.04

My machine won't boot, freezing mid-boot with a flashing caps lock, and booting in recovery mode I managed to get "Kernel panic -- not synching: Attempting to kill init! exitcode=0x00000007" I took ...
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1answer
22 views

lenovo t420 /Ubuntu 14.04

A screen has appeared with it saying at top GNU GRUB version 2.02~beta2-9ubuntu1 Then in a box says *Ubuntu,with Linux 3.13.0-43-generic Ubuntu,with Linux 3.13.0.-43 generic (recovery mode) ...
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5 views

rd_size being ignored on boot

I need to set up one ram-disk of about 500MB so: I have added rd_size=512000 to my boot line (via /etc/defaults/grub & run update-grub) but I am still only given 64MB ram-disks As brd is ...
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11 views

Disk Partition using disk utility on ubuntu 12.04 [duplicate]

I have a Dell Laptop which is running Ubuntu12.04 Lts. The ubuntu was pre installed in the sysytem. It has a 1 tb harddisk capacity. I want to have a dual boot installation . I want to install ...
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16 views

Can't get to grub menu for dual-booting windows 8.1 and ubuntu

I have been knocking my head against this issue for weeks, and I am at a point where I do not know where to go next. I have a Sony VAIO that came pre-installed w/ windows 8 (has since been updated to ...
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1answer
4k views

Ubuntu 13.10 Grub 2.0

I know this question may have been asked hundreds of times before but there doesn't seem to be one answer to how to solve it. I upgraded my computer to Ubuntu 13.10 and my computer was low on ...
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4answers
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What to do when I get an “attempt to read or write outside of disk 'hd0'” error and Boot Repair does not solve the problem?

I tried to install Xbuntu 13.10 on an older computer. I noticed some difficulties during installation that may be relevant to my problems. Notably: The screen resolution was extremely low. The ...
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1answer
3k views

Remove Grub Loader from Mac - USB Thumbdrive installation

I installed Linux from one bootable USB thumbdrive onto another bootable thumbdrive. That works. However, now my Macbook Air boots to "error: no such device: XXXXXXX... grub rescue>". If I hold ...
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1answer
3k views

I get only a GRUB terminal after installing Ubuntu alongside Windows 8. How do I fix this?

I attempted to load Windows 8 and Ubuntu alongside each other and it was working well until my Ubuntu installation completed and I restarted the computer. Now I can't get past this error: Minimal ...
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28 views

Dual-boot Windows and Ubuntu constantly crashing

http://paste.ubuntu.com/9597237/ I have an Ubuntu 14.04 dual booting with Windows 8. I want to be able to switch back and forth, but that seems to be an iffy proposition. The Windows was installed ...
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5answers
30k views

How to delete grub entirely from grub rescue. Boot windows only

I had installed ubuntu (twice actually) onto the same drive. I wanted to 'try again' since one of them didn't install correctly and the other installed differently, but it worked. I was getting ...
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3answers
952 views

Install Ubuntu but still boot into Windows 7 (No GRUB screen)

EDIT: Nothing was required my end, I have picked the best answer (Which I was going to do anyway) Thanks for the suggestions First of all I want to boot Windows only, I'm not having a duel-boot ...
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16 views

Accessing Windows 8 Hibernated Partition over Ubuntu

I installed Ubuntu alongside Windows-8. Ubuntu works well. Windows-8 is unaccessible because of MBR error. Then, i logged in to Ubuntu and tried to access windows partition (under C:, all of my ...
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1answer
31 views

Windows Invalidated after GParted partition?

I installed Ubuntu 14.10 on my computer on a tiny 20 GB Partition. I decided this was far too small, so I used GParted, resized the partition to an 80 GB partition, and Reinstalled the GRUB ...
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1answer
41 views

Ubuntu black screen after install!

Here goes my problem: I've just finished installing ubuntu onto a computer who, has 1 SATA DVD-RW device and 1 IDE HDD on slave, just after installation finished grub trows me an error like this: ...
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2answers
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Ubuntu 14.04 not booting after error message. /tmp could not be mounted

I recently installed Ubuntu 14.04 using WUBI and after installation when it booted it showed an error: Serious errors were found while checking the disk drive for /. There were three options: ...
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0answers
12 views

After installing Linux, booting up computer shows no bootable device found

However, I can still boot to windows or ubuntu by selecting a specific disk to boot to. It seems that the computer won't go to grub when turned on. Here is some more info: ...
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1answer
3k 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
7k views

How can I add a new operating system boot entry to the GRUB2 menu?

I'm pretty new to Linux, but over the past few days I've taken it upon myself to give it a shot. I'm trying a few different distributions just to kind of get a feel for different versions, and this is ...
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1answer
26 views

new motherboard, old disk: “Gave up waiting for root device”, dropping to initramfs; grub reinstallation doesn't help [on hold]

I want to use a new motherboard with an old disk. The disk has just one partition, with Debian/jessie installed. On booting, Debian is found and begins to start up with usual dmesg output lines. After ...
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0answers
24 views

Unable to automatically boot to grub

I am running ubuntu 14.10 in dual-boot with Windows 8.1, and I was having no trouble until I tried testing out TAILS and couldn't find it in grub, so I installed rEFInd. I later tried uninstalling it, ...
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1answer
58 views

Grub doesn't appear Ubuntu 14.04

I have a problem when I start my computer. The problem is that when I start the computer, grub doesn't appear but it is installed. Firstly, I installed Ubuntu instead of Fedora 21 (I had Windows 8.1 ...
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0answers
28 views

Remove GRUB Bootloader from Mac Yosemite [on hold]

I've seen the posts here: Remove Grub Loader from Mac - USB Thumbdrive installation and here: http://hints.macworld.com/article.php?story=20091111185717745 but I've got Yosemite, and in Disk ...
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0answers
31 views

adding windows 8 entry in grub

i have windows 8 in my hard disk and i installed Kali on a pen drive disk(not live). after installing i could not boot into windows i un-installed Kali but grub is still my boot loader and it does not ...
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2k views

WIndows 8.1 not showing up on GRUB during boot up. Windows 8.1/Ubuntu 13.10 dual boot

I have recently installed Ubuntu 13.10 along side Windows 8.1 on my Laptop. After the install of Ubuntu and restart, everything worked fine. Windows 8.1 showed up in GRUB when the PC restarted to ...
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13 views

Disabling IRQ #11

I am kind of a noob with linux. I know simple commands like sudo apt-get and things like that. But I have been having problems with my computer. a lot of times I will start my computer and it will ...
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1answer
3k views

Got error 'GRUB installation failed' while installing ubuntu 12.04 lts on windows 8

I have Sony vaio with Windows-8. I also want Ubuntu 12.04 as my second OS. I created 50GB root partition and 4GB swap-area partition. But after some time(about 2 minute) while installation I got ...
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1answer
73 views

Can't put windows on a flash drive, even with dd, winusb and unetbootin

How can i install my windows 7 iso to a flash drive? dd seemed to have worked, but when i booted it did not work, saying grub: no such partiton Which is odd, considering i did not remember installing ...
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2answers
3k views

Can't access BIOS and installing a windows hard drive

Built new computer: AMD FX-8320 Eight-Core Processor × 8 9.7 GiB RAM Graphics GeForce GTX 650 Ti BOOST/PCIe/SSE2 Ubuntu 13.10 64-bit Desktop Computer 1 TB HardDrive BIOS Type, UEFI BIOS ...
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0answers
21 views

On a Ubuntu PC graphics became slow and jumpy after making changes with GRUB2

On my Ubuntu system all worked well until I created a separate dedicated boot partition and got GRUB2 working on that partition... It boots, but my graphics became slow and jumpy. The resolution is ...