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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Problem with lost files on EXT3 Linux partition

i've got a big problem with files that have disappeared from EXT3 partition. This morning i have recived many i/o errors on consol of my linux server. I could not do anything in bash. After reboot ...
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32 views

Ubuntu 15.04 can't shutdown — How to find a way to get a shutdown log

I think all is in the title actually, I just need a way to get a shutdown log to understand what can block it. I don't know if the problem comes from Ubuntu itself or Grub though, as my computer ...
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1answer
15k 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
31 views

ZFS root filesystem

I've been trying to install ubuntu with a zfs as root filesystem. But it seems that GRUB 2.xx which has ZFS support doesen't support compression, so i disabled it. However i keep running in to the ...
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1answer
66 views

Can't get Ubuntu to boot from EFI in Mac

I am trying to get an old ca. 2006 macbook (technical specs here) to boot Ubuntu 14.04.2 LTS. I'm on day two of this now, having wiped the hard drive numerous times and reinstalled from the disk ...
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1answer
42 views

Install Ubuntu Linux Desktop 15.x on Pre-installed Windows 8.1 laptop and have dual boot [duplicate]

I looked at various questions all over the internet. Infact i did the same almost 6 months back on my HP Desktop but i did so much hit and trial that i have forgotten what to do this time? Do i need ...
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0answers
53 views

How to repair Ubuntu GRUB bootloader from within Windows WITHOUT a live CD

I've been running Ubuntu 15.04 and wanted to install Windows 7 for dual boot, and it of course deleted the GRUB bootloader upon install. However, every time I try to use a live CD or USB to repair ...
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1answer
56 views

Kernel Panic when attempting to boot Ubuntu 15.04 CD on older computer

I have an older machine that I would like to install Ubuntu to. When the computer sees the CD and attempts to boot from it, the Ubuntu colour will appear and the accessibility and keyboard icons will ...
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1answer
11 views

Grub rescue trouble after moving a partition

So I was allocating some free space for ubuntu and now grub is launching in rescue mode. I have done a lot of searching and tried what has been suggested here several times. Grub rescue - error: ...
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1answer
382 views

efibootmgr cannot launch OSX yosemite (only showing folder image with question mark)

I have a macbook pro with freshly installed yosemite (100 GB) and freshly installed Ubuntu. To boot I use efibootmgr. My partition layout is: /dev/sda1 40 409639 409600 200M EFI ...
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1answer
9k views

Ubuntu 12.04 stuck at boot splash screen

This has happened to me 3 times now, so it is definitely something I am doing. I'm hoping someone else has seen this or knows what the problem is. First, I installed Ubuntu 12.04 from the ...
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6 views

Grub rescue HP mini 1000

Error entering grub rescue mode "no such partition" after i enter Windows recovery environments my partition is not ext4 thankyou for your attention im newbie on linux ubuntu 14.04
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0answers
13 views

Error attempt to read or write outside of disk hd0

I installed Ubuntu 15.04 on Moserbaer 64 GB pen-drive so that i can use it at office desktop computer as well as laptop at home.My office system is already having a windows 8 and Ubuntu installed on ...
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0answers
39 views

Failed to start user service: unknown unit: user@0.service after grub launch [closed]

First I have to let you know that I got absolutely no knowledge about linux and need help and explaination like Im 3. So, Im on holidays and I have no live cd with me. I tried to install crome and ...
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2answers
3k views

Boot loading problem after Wubi installation of Ubuntu 12.04 on Windows 7

I was new in Ubuntu OS and I was just trying to use wubi windows installer to get a Ubuntu first for hands-on. I followed exactly the same as the instructions and after reboot win7, there is no ...
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1answer
52 views

Lubuntu boot: no signal once in two

I have a strange problem with a fresh installation of Lubuntu 15.04 (Ubuntu 11.04 was ok). Sometimes when I boot the computer the monitor goes in "No DVI signal" mode right after grub selection. ...
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1answer
1k views

How to choose OS when the arrow keys won't work in grub

is there a way i can choose an OS my arrow keys don't work on the OS choices menu so it always boots to Ubuntu and i want to use another OS.
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2answers
4k views

Grub2 on LVM: How can I switch between alternate root LVs?

I have a working setup of Ubuntu Server 12.04 LTS (precise) installed on a LVM Volume (/dev/vg0/root). /boot is on the same LV, and Grub2 boots nicely from it using its own raid/lvm/xfs modules. Great ...
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0answers
29 views

How to setup linux on drive d without removing windows on drive c and other drives

I am a starter in Linux. I was having a windows laptop with the hard drive split into 5 drives. Drive C Windows 8.1, Drive D and G empty. Other drives has important data. I want install Linux on ...
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1answer
37 views

Installed SSD and want to boot existing Ubuntu off of original Hard Disk

I just installed a new SSD into my laptop and had some questions on how to boot into Ubuntu. Before I installed my SSD, I had a single HDD with both Windows 8.1 and Ubuntu installed on it. When I ...
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0answers
20 views

Failed to install GRUB boot loader on HP ProLiant DL380p Gen8 Server

please I need your help. So I am trying to install Ubuntu Server 12.04 on this server. Everything else installs correctly, especially the software which I have selected. But when it comes to the GRUB ...
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2answers
39 views

Cannot boot Windows 7 after installing ubuntu

I installed ubuntu on a seperate partition I made in windows disk management. When starting my pc, windows 7 loads automatically and after reading forums I ran boot-repair in terminal loaded from the ...
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1answer
29 views

Problem in booting from new installation of Ubuntu 14.04 to a new ssd Hard disk

I try a lot of times to install Ubuntu 14.04 toy a new disk in my desktop. But grub never worked. After reboot always goes to rescue grub command line with the message can “open” the disk see image 1. ...
306
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37answers
330k views

How do I remove or hide old kernel versions to clean up the boot menu?

Every time I install a new Linux kernel, it gets left in the grub_config, making the boot menu longer each time. I know I can manually search through the installed packages and remove them. Does ...
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0answers
25 views

Booting off of a usb

I Have Recently Dual-Booted a asus x401a netbook with Windows 7 and Ubuntu 15.04. Every time I want to boot into Ubuntu, I have to boot off of US to access the Grub boot menu, But once booted I can ...
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24 views

Grub acting up, and monitor resolution not detected - Ubuntu 14.04 Gnome

I've been having a lot of trouble with this lately and wanted to check if anyone here had a solution. I installed Ubuntu GNOME 14.04 on my secondary drive, but now when I boot up I get into the GRUB ...
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1answer
21 views

I dual-booted Ubuntu and Windows, and now I want to switch to another distro

Alright, so the other day I installed Ubuntu GNOME alongside Windows 8. Now I've decided that the latest version is just too buggy, and I want to switch to stock Ubuntu. Instead of just installing ...
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1answer
82 views

How to update Windows 7 to 10 without affecting GRUB and Ubuntu installation?

I have 2 systems on my computer: Ubuntu and Windows 7. GRUB was configured automatically during Ubuntu installation. Microsoft now offers free update to Windows 10. I'd like to do it but is it ...
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0answers
29 views

Windows 8.1 won't boot after installing Ubuntu 15.04

So, I made bootable usb with ubuntu, then install ubuntu on my other pendrive, also GRUB. But when I power on my computer, some GRUB console pop up and windows won't load up. But when I put my ...
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3answers
846 views

Ubuntu 12.04 stuck at “reboot: Restarting System”

I know this has been asked multiple times before, but most of these threads don't have an answer. I tried user62664's solution here and ran sudo update-grub successfully, but nothing changed. This ...
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0answers
22 views

would updating grub fix Ubuntu crash error

When I had Windows 10 on my PC it never crashed. But then I put Ubuntu 15.05. It crashes about once per day. But it's a hardware level crash (maybe) as Ubuntu is not crashing. It just winks out ...
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1answer
33 views

Can't boot ubuntu, showing GNU grub menu instead [closed]

I can't boot Ubuntu, instead it shows me the GNU Grub menu. Until yesterday, it worked fine but now it's stuck at gnu grub menu. The items in the gnu grub menu are: Ubuntu, with Linux ...
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1answer
15 views

Grub Error - ^Y: comand not found

I was trying to change default boot option for my laptop(ubuntu and Windows). I can not update the grub which is the last step. When enter the command "sudo update-grub" i get this error "Searching ...
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2answers
78 views

Repair Windows Boot Loader after installing Ubuntu on MacBook Pro

I installed Ubuntu 14.04.2 LTS on MacBookPro11,5 (Retina) with Mac OS X Yosemite following this guide: https://help.ubuntu.com/community/MacBookPro11-1/Saucy The thing is that I already have Windows ...
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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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4answers
7k views

Booting Android with GRUB, but how?

I have a small problem. I have seven partitions: Device Boot Begin End Blocks Id System /dev/sda1 * 206848 219013119 109403136 7 HPFS/NTFS/exFAT <-- ...
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0answers
37 views

WinUSB fails to install windows 7 on USB

I get a error saying: Installation failed ! Exit code: 256 Log: Formating device... Mounting... mount: block device /home/jeffrey/Desktop/Win7_sp1_32-64_EN-faXcooL.iso is write-protected, mounting ...
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0answers
21 views

How to install ubuntu and windows on a non-bootable drive

I recently purchased a PCIe ssd that unfortunately isn't showing up as bootable because it seems my motherboard doesn't support NVMe. What I would like to do is leave my bootloader on a SATA hard ...
2
votes
1answer
37 views

Ubuntu UEFI Dual-Boot without boot repair

I have an HP Pavilion with Windows 8.1 pre-installed. I managed to dual boot Ubuntu 15.04 successfully. Then, I replaced the Windows Boot Loader with the grub loader as default by entering this ...
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0answers
33 views

UBUNTU 14.04 Black screen after interrupting MemTest x86

i have installed ubuntu 14.04 after installing windows 7 (dual boot) a years ago and i have been working on both OS without problems now when i boot to ubuntu i choose from the menu memtest x86 (i ...
3
votes
1answer
18 views

Linux ubuntu can load grub after deleting windows 8.1 dual boot see reults.txt below

Boot Info Script 0.61 [1 April 2012] ============================= Boot Info Summary: =============================== => No boot loader is installed in the MBR of /dev/sda. sda8: ...
84
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3answers
231k views

How do I set the grub timeout and the grub default boot entry?

In Ubuntu 12.04 (or above), how do I set the GRUB time and the default OS (that I see at boot time) as I'm dual-booting Windows (7/8) and Ubuntu (12.04 or above)?
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2answers
25 views

Need to fix admin group but can't get into recovery mode with grub_timeout=0

I've gotten myself into a bit of a unique situation. Somehow my main user got removed from the admin group and no longer has sudo privileges. However, sometime in the past I also set my grub_timeout ...
0
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1answer
18 views

Windows won't load and neither will Ubuntu after removing Ubuntu partitions

I'm using Windows 8.1. I deleted two of the Linux partitions from Windows disc manager. However, two of them still remained that wouldn't let me delete (they were blank). I ignored them, and expanded ...
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1answer
21 views

How come I don't see grub every time I boot? [duplicate]

I have noticed that when grub boots up I don't get a black screen on my monitor. I want to make it so that it will show every time I boot, not just when I turn it off manually and then turn it on ...
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2answers
9k views

If Windows 10 “upgrade” affects GRUB2 and screws up my dual boot with Ubuntu will I have to completely wipe my computer and start from scratch? [closed]

I turned off Windows update because I read about problems with BIOS tinkering within the updates. Partitioning is not something I do on a daily basis so fear has been creeping up on me with updates to ...
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2answers
159 views

64 Bit Xubuntu on Full Software Raid 0 Using Mini.Iso

What I am asking is doable but the thing is I forgot how to do it since the last time I did. I recently upgraded my Ram to 8Gb from 2Gb. I am using an Asus Maximus Extreme with an intel core 2 duo ...
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1answer
24 views

Dual booting doesn't load Windows anymore

The grub2 used to work just fine with a purple screen pause and used to load Windows and Ubuntu as required. I used to run both OS on the same machine and both used to work just fine, but now when I ...
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3answers
663 views

Dual Boot: GRUB disappeared, boot-repair not working and linux partition cannot be accessed

I'm trying to fix a friend's computer. He uses Win7 and ubuntu 14.04 dual boot and ran "secure boot", which seems to have caused major damage: afterwards, GRUB wouldn't show up and the computer booted ...
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1answer
17 views

Keeping Windows Bootmanager

When installing LinuxMint it assumes it is the only operating system and replaces the perfectly working Windows Bootloader with grub2. How do I prevent the Linux installation to mess with the boot ...