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 shows apurple screen when trying to boot windows

SO guys. Recently I'm having a weird problem. I had my windows 10 and Ubuntu set up in dual boot for nearly one month. Two days ago for some reason, I clean installed windows and as expected, I ...
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1answer
56 views

Ubuntu install with Dual boot Win7. Win 7 is not a boot option

I installed Ubuntu on Windows 7 system After Ubuntu install, I no longer see Win7 as an option Ubuntu is working fine. I read on the forum to install boot-repair. I run the recommended fix option. I ...
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0answers
11 views

Installed 15.04 via netboot, getting unknown filesystem error on boot

I've tried other suggestions after searching but nothing has helped. Porteus has been my main OS for a while however I'm struggling with its complexities, decided to change and installed 15.04 using ...
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2answers
41 views

Boot problems with Ubuntu on a external drive

I have tried to install Ubuntu 14.04 LTS on an external drive alongside my Windows 10 OS on my internal drive. If my external drive is connected everything works just fine. The grub menu loads and I ...
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0answers
58 views

Help with Ubuntu /Windows boot

I was stuck in GRUB 2 for days, I could not boot Windows or Ubuntu. I kept making new bootable usb with the same version of Ubuntu in an attempt to boot up and repair. I somehow got lucky on my 100th ...
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54 views

unable to boot into grub, ubuntu or windows; unknown file system; grub rescue

I am continously getting errors while opening any of my operating systems I have dual booted windows 10 and ubuntu 14.04 On starting the PC I get the error: Error: unknown filesystem. grub ...
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1answer
52 views

Dual boot and mounting windows partition problems

i am new to ubuntu, i am installing LXLE 14.04.03 (64bit) on a Lenovo G50-30 preinstalled windows 8.1 updated to Win10 Home. I carried out the install with Secure boot disabled and Bios/uefi optimised ...
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0answers
10 views

How to set persistent media flag on live usb

My computer requires the following flags to boot into live usb: live-media=/dev/sdb1 acpi=off nopersistent without the nopersistent flag it cannot find the persistent partition (which is /dev/sdb2 ...
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53 views

Grub 2, Windows Vista, Ubuntu 14.04

This is how it was for years: I had Windows Vista working fine on one hard drive. I had an older Ubuntu working on another hard drive. I was able to select which hard drive to boot. I installed ...
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0answers
28 views

Cannot boot Windows 8 or Ubuntu 15.04, stuck at GRUB

I've been trying to fix this for so long I cannot remember which version of Windows I had installed. I'm 75% sure its Windows 8, because I didn't like 10 very much. I followed the pendrivelinux.com's ...
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1answer
43 views

Created a Bootable USB Drive to Install Ubuntu.. What next?

I created a bootable Ubuntu USB drive (no CD drive on ultrabook) on Windows so I can install the OS. When I boot from the USB drive, I get a terminal with "grub." I have no idea how to even begin the ...
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28 views

ubuntu not booting suddenly dual boot

I managed to install a dual boot with windows8 first and ubuntu 14 second. it worked fine until 2 days ago, when ubuntu would not boot any more. windows is still fine, but i would like to continue ...
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26 views

installing Ubuntu 15.4 (64 bit) on Dell Inspiron with Intel i3 processor and running Windows 7

I have downloaded and tried to get Ubuntu 15.04, first 64-bit, running on my Dell Inspiron. I have 3 partitions, C- with Windows 7, D - my working partition and F- which I have reserved for Linux. I ...
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1answer
41 views

Boot initialization problem, boot unknown partition, dual boot pc

It has been 3 days I'm trying to solve the boot problem. I have two systems, Windows 10 and Ubuntu 14.04 in different partitions. I have tried many solutions: I used Boot-Repair but it didn't work. ...
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2answers
47 views

Dual Boot on win8.1 with Ubuntu 14.04 LTS

My system is not going to dual boot options. I'm new to linux, just wanted to see how it works and so I installed it using a liveUSB after creating a separate 30 Gb partition alongside with my 3 ...
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0answers
21 views

Keyboard and mouse stop working in ubuntu live usb

I have recently tried installing Ubuntu from a live USB on to my PC, and i encountered problems with Ubuntu not detecting my keyboard or mouse as soon as I boot into it. The keyboard and mouse works ...
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1answer
38 views

How do I dual boot Ubuntu and Kali on one external hard drive?

More specifically, how do I get it to work? I have install Ubuntu on my external hard drive, and it works flawlessly, with Grub2 appearing and I have the option between Ubuntu and Kali, however kali ...
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2answers
101 views

How to fix my Grub after Windows 10?

I am having some large issues right now. I decided to go forward with a Windows 10 upgrade after it worked fine on my other dual boot. Of course, I knew that I would have to fix Grub in some way ...
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0answers
44 views

How to regenerate grub menu entries on Ubuntu 14.04 Trusty after deleting all kernels?

I accidently removed all kernels from my Ubuntu 14.04 Trusty. I followed steps in this question's answers to install a new kernel but when I try to boot I don't see the 'Linux/ubuntu' option in my ...
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1answer
21 views

hp pavillon dual boot ubuntu

I managed to install ubuntu and dual boot it on a hp pavillion notebook. To do that I had to press esc and f10 immediately after pressing power, in order to access the bios. Enable legacy in the boot ...
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1answer
84 views

How to dual boot Windows 10 on Ubuntu 14.04?

I have a desktop with Ubuntu 14.04 as the Operating System. How would I dual-boot Windows 10 onto my desktop? Thank you very much. I understand it would be much easier to do the other way around, but ...
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1answer
55 views

Windows doesn't boot from grub after installing on second drive

I'm on a Lenovo ThinkPad Yoga s1 running Ubuntu 15.10. Just yesterday I installed a second SSD in my laptop. I removed the main drive with Ubuntu, installed Windows 10 onto the second drive, then ...
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1answer
38 views

New GRUB after installing Linux Mint. How do I go back to my previous GRUB configuration?

I have Lubuntu and Xubuntu installed on my hard drive (in different partitions). After installing Linux Mint (on a 3rd partition), I discovered that it installed a new GRUB bootloader which I don't ...
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33 views

grub2 or boot-repair not working

Image of my laptop.I have an HP Envy laptop with Windows 10 Pro 64 bit. Trying to install ubuntu desktop alongside Windows 10. Everything went fine but grub2 is not working as expected. Tried ...
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1answer
50 views

No EFI boot partition on GPT SSD - GRUB won't load Windows

Hi I recently installed Ubuntu Gnome 15.10 64-bit on my T450s to dual-boot with W10. I formatted my SSD as GPT a while ago and forgot so I never manually added the EFI boot partition necessary for GPT ...
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1answer
46 views

lost in the middle of Nvidia installs

My new system is: EB1037 CPU: Intel® Celeron® J1900 (2.0ghz) Graphic: NVIDIA® GeForce 820M 512MB Memory: 8GB DDR3L at 1333MHz Storage: 2.5" 320GB SATA II Wireless: Data Network 802.11 b/g/n LAN: ...
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2answers
34 views

No dual boot option for windows after installing new version of ubuntu

Installed ubuntu along with windows 7. But since then it is automatically starting ubuntu 14.04 and not showing any option to boot windows. While installation I let it use default options to erase ...
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0answers
19 views

Windows not booting from GRUB

After dual booting Ubuntu 14.04 and Windows 10 , when I select Windows from GRUB I sometimes boot into Windows perfectly fine . At other times I get a green jagged line screen for 2 mins , to be ...
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1answer
23 views

no bootloader appears to be present at all. thanks grub

so i am on a compaq presario cq57. i installed ubuntu 14.04.3 and after fighting with it a couple days it finally installed. First it wouldn't, said something about grub 2 and a fatal error, so i ...
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61 views

Ubuntu 15.10 restarts but wont shutdown

I have researched a lot and explored all the avenues but unfortunately nothing worked for me.I tried updating the grub, editing the kernel but no success.After i installed 14.04 this issue have been ...
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1answer
84 views

Windows10 - Asrock z170 extreme4 - Dual Boot

Initial scenario: Windows10 already installed in EFI mode Free space left for ubuntu + swap Problem I can install easily ubuntu in legacy mode ( both 14.03 or 15.10) but I am not able to boot it in ...
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1answer
41 views

Ubuntu 15.04 won't boot

I have just completed a fresh install of ubuntu 15.04. Everything seemed successful, but when I boot I get a black screen with a blinking cursor. I installed it on an ssd drive (/dev/sda) I tried ...
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1answer
42 views

Does rEFInd have a “recovery mode” like there is in Grub2

rEFInd is awesome to dual-boot Ubuntu (primary) and OSX (way secondary). But every now and then I screw something up, and I miss the Grub2 option of booting into "recovery mode" and then dropping ...
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1answer
54 views

Ubuntu 15.04 installed on USB drive but does not boot-up

I have a 1TB external USB HDD. I have partitioned it as follows. Disk /dev/sdb: 931.5 GiB, 1000204885504 bytes, 1953525167 sectors Units: sectors of 1 * 512 = 512 bytes Sector size ...
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32 views

Need to restore deleted boot partition. Can I use boot-repair with full disk encryption?

I have a PC with Ubuntu 14.04, full disk encryption and an accidently deleted boot partition. When I booted from CD and tried to reinstall Ubuntu, it showed 256 MB free space on dev/sda and one ...
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0answers
42 views

boot services were changed and therefore Ubuntu does not work

I was changing the boot services to make the boot faster and now I get a black screen (the screen is working but it is black) after I enter my password in the login page. I can't do anything to solve ...
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1answer
37 views

How to reinstall grub from a liveUSB if the / partition is encrypted and there is a separate /boot partition?

Hello I found few threads that explain how to reinstall grub2 by the mean of chroot but none of them explain how to proceed if my / is encrypted and if there is an plain /boot partition. Thing is I ...
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1answer
130 views

Newbe Ubuntu installer - Ubuntu 14.04.3 LTS 64bit - Windows 10

Having some issues installing Ubuntu 14.04.3 LTS 64bit next to Windows 10. This is what I did: 1) Created a bootable usb with ubuntu on it using Universal-USB-Installer-1.9.6.3 2) Changed the boot ...
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0answers
17 views

Trying to install Ubuntu on a new PC I built but I am getting a “Input not support” error

Okay first off I googling the error has led me to believe that the problem is that the graphics card is trying to output to the monitor in a resolution the monitor doesn't support. There is no OS on ...
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5answers
116 views

GRUB not loading for dual boot

I'm running a dual boot Windows 10 and Ubuntu 15.10 on my HP Spectre X360. Everything worked fine until I updated Ubuntu and it asked me to restart the system. After the restart GRUB wouldn't show ...
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0answers
12 views

Run fsck from grub [duplicate]

My just after installing some software. It takes about 5 minutes to load and then goes into initramfs. I think it's an inconsistency in my super block. I have access to initramfs and grub and nothing ...
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0answers
30 views

grub-install error after update

Yesterday I did an apt-get update on my machine: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty During the ...
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1answer
38 views

UEFI boot not working afte succesful install - Ubuntu 15.10

I am not able to UEFI boot a computer after a successful USB install of Ubuntu 15.10. I prepared the bootable USB with the newest version of Rufus, using GPT for UEFI mode. After a successful OS ...
2
votes
1answer
90 views

Installing Ubuntu 15.10 with Windows 10 in EFI mode on two harddrives

I have just bought a new computer with two hard drives and it came with Windows 10 pre-installed. I decided to install Kubuntu on the second hard drive. The weird thing that struck me from the ...
3
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1answer
99 views

Repair grub2 after upgrading windows 8.1 to 10 (odd situation)

I know this is a common issue, but I think I'm facing a different situation in my notebook. It came with windows 8.1, I used a ubuntu 14.04 disk to install it. It worked for months this way: With bios ...
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0answers
17 views

Dual Booting Issues

I just finished dual booting my computer (here's the specs) with Ubuntu 15.10. I keep running into an issue where I will select Ubuntu and Windows 10 from Grub and then a few different things can ...
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0answers
33 views

Ubuntu UEFI installed next to win10 goes black screen after grub- caused by motherboard change

As in question topic, I have problem that my kubuntu 15.10 goes black screen after grub. Firstly It is just black screen, but after some time monitors turn off, And everything I can do is to press ...
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1answer
44 views

Windows on SSD, Ubuntu on HDD

In my system (MSI GS60) I have 2 SSD (on a Raid0) for Windows, and an HDD where I want to create a partition to install Ubuntu. I have been reading about the optimizations you need to do to install ...
2
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1answer
113 views

Ubuntu 14.04 and Windows 10 dual boot not working

I have a system with 4 hard drives. It is configured like this: /dev/sda - windows system, default partitions /dev/sdb - storage, ntfs /dev/sdc - storage, ext4 /dev/sdd - ubuntu system It is a ...
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2answers
37 views

Live USB wifi problem

I am using an HP laptop with Windows 10. I just created a 14.04 LTS live USB and booted in nicely. I was able to connect to my SKY broadband WIFI without any problems. The installation also went ahead ...