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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on fakeraid, could not mount / at boot, then boots to purple screen

I'm running Ubuntu 14.04 beside Windows 8 on an Asus UX51VZ-XB71 which comes with two SSDs configured in a fake raid-0. I can install 14.04 successfully by booting into the live usb, assembling my ...
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11 views

Problems booting after moving from Ubuntu 12.04 from one HD to another

I recently tried to move my Ubuntu 12.04 OS from a smaller hard drive to a newer one by following, for the most part, the instructions described at ...
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1answer
48 views

Windows 8.1 is not showing up in grub2 menu

I have a Toshiba Satellite C55 Series Laptop. I decided to install Ubuntu because I love Android. When I installed Ubuntu there was a Windows 8 option, but after I restarted my laptop windows 8 option ...
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1answer
70 views

Dual boot Windows 8.1+Ubuntu12.04 - can't boot on windows

I got a Toshiba Sattelite S70-b-110, with windows 8.1 pre-installed. I partitioned my HDD into 4 : C:/ (Windows install) ; P:/ (Windows Data and installed programs) ; Ubuntu install (/) ; ...
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1answer
241 views

Uninstalled Ubuntu 14.04, can't boot Windows 8 stuck GNU GRUB

I've got a problem with my computer after trying to uninstall Ubuntu 14.04 (in probably the wrong way). The steps I took yesterday to try this are as follows: booted windows 8 went to uninstall ...
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1answer
31 views

Can't boot from CD/Install Windows

My issue is with Ubuntu 14.04. I have recently installed Ubuntu over Windows 8, being unhappy with Windows. After playing with Ubuntu, I discovered that some of my hardware and software is ...
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1answer
75 views

Can't Boot into Windows 8

I have just installed Ubuntu 14.04 LTS on my laptop with Windows 8 installed. Now I can boot into Ubuntu without any problems, but I can't boot into Windows 8. After I choose Windows 8 Loader (on ...
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1answer
52 views

How to install graphics drivers off a live usb

Hi im having some trouble with Xubuntu. I have a toshiba satellite c50-b-14d (Hardware can be found here: http://www.toshiba.co.uk/laptops/satellite/c50-b/satellite-c50-b-14d/) After installing ...
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2answers
38 views

need to boot back into windows 8 [duplicate]

i don't know exactly what topic i should read, but i thought it would be better to just post this. i have an acer laptop, and i was locked out of the bios. i wanted to try something new and installed ...
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162 views

(Boot Problems) Error: attempt to read or write outside of disk hd0. grub rescue>

I normally auto-boot to windows through grub because of music software incompatibilities with Ubuntu. This message came up one day and I could never figure out what happened, but It won't let me even ...
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26 views

how to fix Ubuntu boot after intalled windows?

I was having win8.1 as my 1st system and Ubuntu 14.04 as my 2rd. and last week i installed win 10 preview , however win8.1 , win 10 and ubuntu are all shown in the boot list , but if i chose ubuntu , ...
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29 views

Flashing white dash on startup

My Laptop has always been annoying when it came to grub. I have a toshiba satellite c50-b-14d (if needed you can find the hardware details here: ...
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81 views

Reset Entire Lubuntu System to Factory Defaults Without Reinstalling

Okay, I've been spending several days trying to troubleshoot my GRUB, but ain't getting anywhere. An update corrupted it, so it takes extra-long to boot my computer since I have to go through the ...
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1answer
54 views

Deleting Windows Partition + Installing Ubuntu = Please Help!

I installed Linux Mint about 2 years ago because my Windows side failed to boot. With Linux I was able to access the files I needed on the Windows side immediately, and go about my day (I did this in ...
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1answer
44 views

Two “Windows 7 loaders” in Grub2 screen

I've installed Ubuntu 14.04 LTS on the same hard drive(sda) which already has Windows 7 OS installed on another partition of this hard drive and I also have a second hard drive(sdb) which is just for ...
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27 views

A black screen/window on top of the grub2 menu on boot

I only have ubuntu 14.04 installed and I'm getting a black screen/window on boot. at first I thought that I had no grub and was booting straight into ubuntu. But that was not the case, in the next ...
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23 views

Vista & 14/04 dual-boot Boot-repair to external hdd: Can't have a partition outside the disk!

I have a laptop with 1) internal disk with windows vista and 2) an external hdd with ubuntu 14.04 On start-up it just boots to windows. If I change the boot-order to the externall drive, it simply ...
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77 views

Problems with grub rescue. can't enter BIOS, can't boot from cd, dvd or USB, only OS installed is Win8.1

I am a noob with grub rescue. I am Dutch (don't use tot difficult language) andere I screwed up my laptop. What i did: Tried to install Ubuntu and Mint next to Win 8.1. I had tot much primary ...
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22 views

Should I install the bootloader on the internal hard drive?

I've got a mac and I want to install Ubuntu on an external hard drive. Whenever I try to install Ubuntu on the hard drive I get an error when the program tries to install the bootloader on the ...
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0answers
18 views

Can not change grub2 timeout

I did follow instruction https://neosmart.net/wiki/easybcd/dual-boot/linux/ubuntu/ But I can not do last step! I did sudo update-grub and sudo update-grub2 and GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT ...
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70 views

UbuntuGnome 14.04 does not boot after install on MacBook Pro 13

I installed Ubuntu Gnome 14.04.01 by creating partitions on OS X and then installing from bootable USB disk. By Selecting Linux in rEFInd menu, I'll be taken to grub and selecting any options will end ...
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39 views

UEFI Bios, Ubuntu 12.04 and Secure Boot blocked

I have a problem, how I can boot Windows 7 / Windows 8 32-bit on my laptop, has blocked all options related to UEFI default. (See photo) At this time, I have Ubuntu 12.04 on a 16GB mSATA SSD and a ...
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20 views

Two windows 7 entries with only one working randomly when booting

I installed Ubuntu alongside Windows 7 just now and when booting up, I get the menu: Ubuntu memtest windows 7 (loader) /dev/sda1 windows 7 (loader) /dev/sda2 Now, the problem is ...
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17 views

Forced reboot stopping in grub on HyperV

On 14.04, running on HyperV (Windows 8.1, deploy planned for 2008R2). For a complicated reason, I need to occasionally force a second reboot while the system is booting (I will also post a question ...
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2answers
42 views

DUAL OS with booting

I Have installed the Ubuntu 14.4 version o/s over the Window 7 ultimate with seperate partition with 200 GB free space. Thereby I have changed the booting mode to hard disk now I am facing the ...
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43 views

Partition not found Grub Rescue [duplicate]

I had installed ubuntu on a different partition. When i deleted that partition, it also deleted my 3 logical drives and i am only left with C drive containing XP Professional and another drive D. I ...
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1answer
53 views

Couldn't access ubuntu, used boot repair, cant access windows 7!

As the title says, I accidentally created a grub on my windows partition and now I can't use it. My windows install disk says that it's not compatible with my windows so that doesn't work. Then I ...
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11 views

Grub lists Windows 7 but hangs on trying to boot it

First of all, many thanks for trying to help. Here is the problem: I've two physical drives in the PC with a clean Windows 7 installation on sda and a clean Ubuntu 14.04 (64-bit) on sdb. Both OS boot ...
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1answer
61 views

Show ubuntu boot as UEFI in boot selection HP Envy

I've recently installed xubuntu on my HP Envy 15. I can't set it as default boot because it is not seen as UEFI boot. The strange fact is that the usb drive I used to install xubuntu (made with ...
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12 views

How to fix display of system rescue cd?

I recently change system rescue cd to 4.3.1. One thing different is that it starts from a character console (like 80 characters per line), then the font becomes smaller and the console only takes ...
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84 views

Lost grub menu entry after installing second linux OS

Previous setup was Kali Linux (encrypted) on my HDD and Windows 8 on my SSD. I installed Kali Linux while having my SSD removed from the device so this install could not mess with my windows system. ...
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2answers
46 views

Grub Setup for dual Ubuntu under EFI

I have installed to versions of Ubuntu, one up-to-date Xubuntu and a 12.04.5LTS Ubuntu. I first installed Xubuntu and later Ubuntu. Since the 12.04 would not write a correct grub-conf on install (I ...
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2answers
95 views

Install Windows Alongside Ubuntu 14.04 on Second hard Drive

Currently I have Ubuntu 14.04 installed on one hard drive, and I'd like to install Windows onto a second hard drive. I've read that I need to boot into a LiveCD, usually I'd use my memory stick for ...
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1answer
30 views

GRUB problems after Upgrade 14.04

I upgraded to 14.04 on a server a few months back and today was the first time that I have rebooted it. When I expected it to come up normal, it seemed that GRUB was broken or just not found. I ...
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2answers
75 views

How to give boot priority to grub2 on HP Envy 15 notebooks?

Yesterday I installed xubuntu 14.04 on an USB3 ultrafit pendrive just to avoid modifying the partition table of my new HP Envy 15 jxxx. Everything works fine, xubuntu do perfectly this job... but ...
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49 views

Grub navigation with volume key and windows key on surface pro

I recently dual booted my surface pro with ubuntu 14.04 (and upgraded to 14.10). Everything works fine (since I upgraded to 14.10). There is one little problem. i don't have the windows clip on ...
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44 views

Corrupted boot file

a while back ( 6 months or so ) I was using a single laptop and switching out the Windows HDD with my Ubuntu SSD drive from time to time. The laptop was in standby in Windows ( I thought it was off ! ...
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41 views

Why did dual boot system stop booting Linux?

I'm trying to understand why the following happened... I think (hope) I can fix it using boot-repair but have not yet tried. To clarify... I had a successful UEFI dual boot setup with Win 7 64bit (no ...
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32 views

How do I speed up how fast GRUB starts/hands off to OS?

After the BIOS finishes its POST, grub starts but the time between the BIOS finishing and seeing the Ubuntu startup screen takes maybe 3 or even 4 seconds, and when I set it to take 5 seconds to ...
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0answers
70 views

Installed Ubuntu 14.04 after Windows (dual-boot) - Windows now no longer boots up

I recently installed Ubuntu 14.04 after several failed attempts at other distributions running alongside Windows 8.1. I have managed to successfully install Ubuntu 14.04 alongside my Windows 8.1 ...
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1answer
25 views

How long for 14.04 installation to repartition disk

So I wanted to replace 12.04 alongside W7 by 14.04 alongside W7. Trying the upgrade path resulted in a crash, grub badly mutilated apparently. So tried a fresh install. 14.04 recognises W7 so I ask ...
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0answers
21 views

I'm not getting a grub menu on boot

instead i'm getting a blue screen saying you need to repair your device(0x0000225).but however i'm getting a "Ubuntu( WDC 00xxxx)" option when i enter into boot device options in my bios and when i ...
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2answers
55 views

after installing second distro, seperate grub2 installs

I was googling a lot, but couldn't really find any solution. I installed Kubuntu 14.04 (sda2) with seperate home partition (sda4) in EFI mode. Then I decided to install a second distro (Ubuntu Studio ...
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67 views

core.img cannot be found

I get this after trying to reinstall grub using boot-repair: Grub2 (v1.99-2.00) is installed in the MBR of `/dev/sda` and looks at sector 778209992 of the same hard drive for `core.img`, but ...
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1answer
78 views

Add a grub menu entry that boots into my current install but with a different runlevel

I am running the latest Kubuntu (14.10) and would like to add a grub2 menu entry that allows me to boot straight into a different runlevel? I would like to modify /etc/rc3.d or /etc/rc4.d to boot ...
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1answer
115 views

No GUI install Grub Customizer 14.04

Don't see Grub Customizer in system tools and can't start using gksudo Terminal command line paste: user@LC2530Sb:~/Desktop$ sudo add-apt-repository ppa:danielrichter2007/grub-customizer [sudo] ...
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0answers
20 views

wont see windows7 in grub after moving drives to other pc

i have moved 2 hard drives to new pc, repaired grub, ubuntu was detected successfully however windows wasnt detected, i did use BootRepair few times here is Boot Info Summary, its quite a mess ( as i ...
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1answer
24 views

how to uninstall ubuntu

Friends! i met with a strange problem. its a bit lengthy. i created a bootable pendrive of ubuntu 14.04. when i started my pc and opened boot menu and choosed the device which contains ubuntu and ...
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1answer
124 views

GRUB fails to load Windows in “dual-boot” with ubuntu

I've just installed Ubuntu from live DVD in my external HD to try it before using it in dual boot with windows 8. I deleted my Windows backup to make room for it so, even if I have the rescue disk I ...
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1answer
102 views

Ubuntu installation failure - Unable to install GRUB

Lately I bought a new laptop - Lenovo Yoga 2 Pro 13" - Intel i5-4210U, 256 SSD. I have tried to install Ubuntu 14.04 using this guides: Ubuntu on Lenovo Yoga 2 Pro ...