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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Grub cannot detect Windows 10 (UBUNTU INSTALLED FIRST)

I have a Lenovo Yoga 2 pro triple booted with two Ubuntu (15.10, 14.04) and Windows 10. Initially I wiped the hard drive and installed Ubuntu. To install windows I reformatted the hard drive to GTP ...
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25 views

Grub issues, cont

Okay, so I posted some questions online last night. While they didn't get resolved my bigger issue right now seems to be my desktop will not boot without my windows installer usb I made plugged in. I ...
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1answer
51 views

How to boot from a usb in UEFI mode on a Dell Inspiron

I want to dual boot ubuntu 15.10 with already installed windows 10 (upgraded from 8). From what I've been researching, in order for ubtuntu to be dualbooted with windows 10 on a uefi machine, the ...
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40 views

Editing Grub.cfg

I have two questions. Where is grub.cfg located? Ubuntu / is mounted on /dev/sda6 Fedora / is mounted on /dev/sda8 How should I edit grub.cfg so that when I choose Ubuntu (out of Ubuntu and ...
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2answers
30 views

No operating system selection screen

I have been using Windows 10 as my default OS. A few days ago I installed Ubuntu 14.04 through USB. When I start my PC I can't see any OS selection screen. It boots Windows 10 directly. But if I press ...
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3answers
37 views

Ubuntu not able to boot up and fresh installlation also not possible

I messed up with my ubuntu 15.10. I was trying to gnome-desktop-environment by running the command sudo apt-get install gnome-desktop-environment, but I closed the process in between because I didn't ...
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1answer
30 views

Windows 8.1 bootloader is not working after install Ubuntu 14.04

after installing Ubuntu 14.04 windows boot loader is not opening ... when i turn on my laptop it boot directly ubuntu . There is no option to boot windows boot loader. I didnot delete or format any ...
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29 views

Missing Operating System vs Grub Terminal [duplicate]

Did some updates on Ubuntu. My sister turned off the pc, I guess while the update was not finish and since then I got some issues. First some i-386 was missing and the rescue grub something started ...
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25 views

Grub? help, I'm not sure where to begin

I am having trouble with Grub reading any of my usb devices on start up. That being a ubuntu live cd and a windows installer. Now I have two questions, if I want to use these (which I know work.) ...
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0answers
18 views

Surface 3 Issues - Black Screen After Boot

I am sure this question has been asked many times, but I have not been able to find an answer. I am trying to install from a usb and I always get passed the purple screen with the Ubuntu logo, and ...
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0answers
28 views

How can I get the Ubuntu Installer to recognize that my system has windows 10 installed?

I'm currently trying to dual boot my Dell inspiron 7000 series laptop with Windows 10 and Ubuntu. Windows 10 is already installed. However while messing with installing other linux distros i seem to ...
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1answer
42 views

Ubuntu 14.04-Windows 10 dual boot makes windows hang

I have a dual boot Ubuntu 14.04<>Windows 10 system. It has two SSD-drives, 256 GB for Windows and 128 GB for Ubuntu and one 1 TB HDD for data. Ubuntu works without any problems, Windows 10, ...
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12 views

Headless wont boot without screen connected

For a couple of years I have been running a little PC as a headless server with 14.04. I recently upgraded the hardware, and used DD to copy the hard drive to the new drive and new mother board. ...
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0answers
10 views

Ubuntu 14.04 theme failed to be loaded properly and wouldn't be changed

I was playing with grub2, so I restarted my machine for several times. But at some point, the system seems to be pissed off and wouldn't load its theme properly. And any of my subsequent attempts to ...
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0answers
24 views

“pci=nomsi,noaer” in “/etc/default/grub” : any downside?

Because my kern.log and syslog files were growing to immense size, I added the subject entry to a line in /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash reboot=efi,pci pci=nomsi,noaer" ...
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1answer
36 views

Grub Customizer will not install on Ubuntu 14.04

enter image description hereenter image description hereI am trying to install Grub Customizer to customize Grub menus, without success. The following instructions (which can be found on various ...
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0answers
48 views

Ubuntu: “Booting in insecure mode” with SecureBoot enabled

I have just installed Ubuntu 15.10, after having been with 16.04 LTS for some time to try it out. While I was using 16.04, I tried to install Nvidia Drivers and got told that I needed to disable ...
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2answers
31 views

How to wipe disk clean totally

I saw this has been answered before but related to windows. I have the following on a 2009 macbook air and would like to wipe the disk and start over: Minimal bash-like line editing is supported. ...
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1answer
34 views

Ubuntu and Windows 10 dual boot issue on a toshiba sattelite P 50 A 11 L

I had ubuntu 14.04 and windows 10 installed on my toshiba, everything was fine. But after a month, my computer starts only on widows, I tried everything I could but I cannot access the ubuntu ...
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53 views

Ubuntu won't boot after installing a new kernel

I am a software tester, and I'm trying to test a kernel module on a variety of Linux kernels (3.2+). Currently I'm trying to compile the module, mount it and run an automated test suite on all Linux ...
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1answer
20 views

How do I get grub's name for a given partition? (specifically grub2)

I know that grub names my hard drives and partitions counting from zero, so /dev/sda might be (hd0,0) and /dev/sdb2 might be (hd1,2). Is it guaranteed that grub numbers the hard drives in the same ...
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1answer
28 views

Installed ubuntu with erase disk and cant boot. no grub [duplicate]

tried boot-repair. URL from that is: http://paste.ubuntu.com/14673632 thanks
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2answers
62 views

grub rescue after creating new partition from windows

I'd successfully installed Ubuntu 10.04.03 LTS with parallel to existing Window 7 Professional. Both the OSes were booting properly without any problem. After install I needed to do sudo update-grub ...
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1answer
32 views

ubuntu partition grub mount failure

I have tried install a Ubuntu 15.1 partition on my window's 10 lenovo t450 machine with a usb. After running boot-repair in Ubuntu, I found out there was a problem with mounting grub2's core.img with ...
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23 views

How to get past the gnu grub screen?

Installing Ubuntu 14 from USB. I Have it installed and updated but now can't restart. Did it have something to do with the boot sequence? All it says is: loading Linux generic Loading initial ...
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2answers
39 views

Set grub as bootloader when windows default bootloader is deleted

I completely wiped my hard drive on an HP initially set up with windows uefi boot. The wipe also deleted default windows bootx64.efi. Right now my fat32 partition flagged as boot is mounted on ...
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12 views

dual-boot distros without re-partitioning & able to run second distro in VM

When my laptop HD w/ Ubuntu 12LTS crashed a year ago, I decided to change up and try 32-bit debian for a while. Now I need to install 64-bit ubuntu again, but I still want to keep the debian distro ...
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1answer
49 views

Is my Ubuntu partition gone?

I have (had) a dual boot Ubuntu and Win10 machine. Windows was hosed and I fixed it using using unetbootin. Ubuntu disappeared i.e. the boot menu that had Ubuntu and Win went. Now I only have Win10. ...
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3answers
73 views

Dualboot Windows 10 and Ubuntu: GRUB Problems

I tried to Dual-Boot Windows 10 and Ubuntu 15.10. But I can not choose to start Windows, when I turn on my Computer (Lenovo ThinkPad E330). I can access all my files of Windows from Ubuntu, because ...
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0answers
16 views

Ubuntu doesnt get past the purple screen. Wont log in..HELP!

Ok here we go, I had Ubuntu and Cinnamon working with Ubuntu as the default OS. Now, I tried to make cinnamon the default but I failed and ended up deleting Ubuntu. Now, every time I sign in my ...
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2answers
34 views

Why showing two vmlinuz and initrd.img in update-grub?

shady@shady:~$ sudo update-grub Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.13.0-76-generic Found initrd image: /boot/initrd.img-3.13.0-76-generic Found linux image: ...
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0answers
12 views

dualboot windows lost recovery but partition is still there

So i run windows 10 (on a default windows 8 machine) and i installed ubuntu 15 and after installing it and messing around decided to reinstall ubuntu, but after the windows 8 partition would not boot ...
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0answers
26 views

How to Boot to USB on a Laptop for Existing Desktop Ubuntu Install on USB Harddisk

How to Boot to USB on a Laptop for Existing Ubuntu Install on USB Harddisk? Sometimes I would want to travel with my work desktop harddisk with a full Ubuntu install. Due to security settings and ...
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1answer
21 views

Accidentally delete Ubuntu swap and main partition

When I start my PC it boots me the Grub rescue place It says error no partition found How do I fix this thing I tried set prefix and set root those things but still it says error. Please help me.
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25 views

Boot Repair disk not successful

I have Windows 10 dual boot with Ubuntu 14.04 LTS. I recently increased my ubuntu partition's size using GParted. Now, to repair the GRUB, I am using boot-repair disk which gives following error : ...
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2answers
64 views

*Grub* Windows 10 doesn't start anymore

I have a SSD with 2 partitions. The first one belongs to Win10 and it worked fine. I installed Ubuntu 15.10 on the second one and it also works fine. Problem is : When I boot, Grub is correctly ...
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0answers
28 views

HELP! Ubuntu (12.04) doesn't load at all after installing lxde! Can anyone please help me?

I was using Ubuntu (12.04) precise pangolin on an old machine (intel core duo dual booting with windows xp). I thought the unity shell was taking too much ram so I installed lxde. It installed a ton ...
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1answer
29 views

How to set partition mounted for /boot with grub installed as boot partition in windows 8.1?

I recently installed Ubuntu 15.10 on an HP Z-Book running Windows 8.1. I installed grub on an sda partition mounted for /boot. Is there some way that I can boot on that partition and possibly use ...
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0answers
8 views

How do I access Windows if all I get at start up is Gnu prompt?

I made the mistake of wiping the Ubuntu partition on my laptop running Windows 8.1 Pro and Ubuntu 14.04 dual boot set up. Now all I see when I turn on my laptop is a gnu grub command prompt. Is there ...
0
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1answer
32 views

Dual booting pre installed Windos 7 and Ubuntu 14.04 (SSD + HDD)

I got this new laptop with Windows 7 pre-installed and I wish to dual boot Ubuntu 14.04 with it. Here is the partition I have currently and I don't know what to make of the `SYSTEM_DRV'. Basically, it ...
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0answers
28 views

duel boot with grub not recognizing windows boot

I recently installed a dual boot of windows 7 and Ubuntu on a new hard-drive (sdb), while still keeping the ancient(and corrupted) install of windows 7 running on the original hard drive (sda) as i ...
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0answers
35 views

what is “audit_printk_skb” and why does it seem to slow my boot

I'm running Ubuntu 15.10 and compared to previous versions, it takes a lot longer to load. I've tried disabling startup programs, also I've done my research and ran the dmesg command that came to this ...
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1answer
22 views

How to shift from one distro's grub to another's

I installed Ubuntu 14.04(say ubuntu-1) and set it with another Ubuntu 14.04(say ubuntu-2). Now everytime I boot my PC I see the grub boot menu from Ubuntu-2 but I want it to start from Ubuntu-1's ...
0
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1answer
37 views

Help in manually adding Windows 8.1 to grub loader

I have just repaired my boot loader using the instructions in this video - https://www.youtube.com/watch?v=i97y5Y2nChs Although it can detect Linux Ubuntu, it can't detect my Windows 8.1. The Youtube ...
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2answers
28 views

Windows boots instead of grub [duplicate]

help, I just installed linux but when I reboot, windows 10 starts instead of grub. I try to selected a diffrent boot by pressing esc, but I could only chooice windows boot system, of my cd/dvd player. ...
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0answers
50 views

Dual boot issue with windows 10 and ubuntu 14.04

I have installed Ubuntu 14.04 on a windows 10 system. Installation was successful, but after rebooting the system, it is taking me directly to windows OS. GRUB menu is not getting loaded during the ...
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0answers
37 views

Installed Ubuntu 15.10 and Windows 10 on separate hard drives, can't boot windows now, Boot Repair didn't fix

http://paste.ubuntu.com/14598891/ This is the link I got after running Boot Repair. Ubuntu and Windows are installed on separate hard drives. Windows is on my 960gb ssd and Ubuntu is on my 120gb ssd, ...
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0answers
63 views

Windows 10/Ubuntu 14.04 dual boot problem. '/boot/grub/x86_64-efi/ntfs.mod' not found

[enter image description here][1]I'm new to Ubuntu, it would be great if you can help me set the windows and Ubuntu dual boot. I've tried many solutions, and I'm really lost. It seems like I touched ...
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0answers
15 views

Ubuntu Installer unable to find Hard Drive (HD is working, please read)

I'm actually stuck since 3 days on this problem, after googling the last 60 hours about it i'm trying to ask here before loosing any faith. I resume here the story to let you understand the situation ...
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0answers
12 views

i need help with fixing dualboot windows 8.1 and ubuntu 15.10?

I have tried boot-repair and it said it was successful but I couldn't boot and I got this link http://paste.ubuntu.com/14593200/