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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partition scheme for dual boot with android-x86

For an old Inspiron 1420 laptop, how can I dual boot (not VirtualBox) with android-x86? What options do I select when installing Ubuntu 16.04 that the partition scheme will work for both OS's. GPT ...
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40 views

Grub shows no OS after boot-repair

I've had some problems with my computer and trying to keep two systems in it. For a long time, I had a stable system where I had Windows 7 and Ubuntu 12.04 side by side, with dual boot. I updated ...
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47 views

Ubuntu 16.04 does not start after installation next to Windows 7

Installation ends succesfully, computer restarts and... Windows boots up. My computer: old laptop HP Compaq 6710b (no UEFI, no secure boot). Two hard drives: - 1st is 240 GB SSD and 2nd is some ...
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Unable to solve the problem of 'cannot execute grub-install in /dev/sda'; 'this is a fatal error'

I installed Ubuntu in my DELL Inspiron 5559. At first it installed showing me the boot menu but later when I restarted my system it didn't give me boot menu and booted Windows. I checked the ...
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1answer
85 views

System won't boot anymore after software update

I'm using Ubuntu 15.10 (64bit) and after the apt-get updates from yesterday it won't boot anymore. It goes from the BIOS screen to black, back to BIOS. I've booted into Boot Repair from an USB stick ...
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24 views

starting the laptop after sleep while using windows — grub opens up instead

I am currently dual booting Windows and Ubuntu. I am not sure if this is an installation error but when I am using Windows and put my laptop to sleep (ie. by closing the lid for a long time), when I ...
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23 views

UEFI problems Grub is no where to be found

I have just recently had to build a new rig because my motherboard failed. So, I am new to the UEFI bios. I have Ubuntu installed on one of 6 drives. Needless to say my computer no longer sees the ...
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1answer
88 views

No Network, not booting

The Problem: I had installed Ubuntu on a brand new laptop and was not getting a wifi connection. Upon clicking the network manager I saw that wifi was disabled, so I turned it back on and still no ...
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23 views

Recovering non-EFI partition with Kali Linux after installing windows 10 [migrated]

I successfully dual-booted and used Windows 10 and Kali Linux for some time. Then due to a failure in Windows I had to reinstall Windows 10. With that I lost the grub. Then I followed the instructions ...
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1answer
71 views

Grub doesn't appear after windows 10 upgrade

After a Windows 10 upgrade I'm not able to choose what operating system I want to boot, (I have installed Windows 10 and Ubuntu 14.04 LTS) because Windows 10 starts automatically. I created a live USB ...
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2answers
301 views

How to change the order to choose os during boot? [duplicate]

I have recently installed Ubuntu in my laptop alongside Windows 10 by dual booting. And at the start grub is showing up to give options between Ubuntu os and Windows boot loader. If I don't do ...
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1answer
37 views

Ubuntu 16.04 freezes on boot after Windows 10 update

Just installed most recent Windows 10 updates alongside Ubuntu 16.04 and when I switched back to Ubuntu 16.04, all it would do was display the Ubuntu logo and dots for a few seconds and then freeze. ...
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1answer
94 views

Grub2 Issues After 16.04 LTS Fresh Install

After two years of using 14.04 LTS I went to install it on my desktop, but wanted a newer ISO and was surprised to see the new 16.04 LTS sitting front and center a few days ago. So I said what the ...
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1answer
50 views

No Bootloader after clean install

I tried to install Ubuntu on a Surface Pro 3 and the installation worked without any errors. After trying to reboot there seems to be no bootloader (boots directly into uefi settings). Booting with ...
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30 views

Problem installing Ubuntu 14.04 on Asus ROG GL552VW

I recently bought this ASUS ROG GL552VW as I really liked the specs. But I am unable to install Ubuntu 14.04 in it. I tried several times with no luck. I tried acpi=off and nomodeset in the grub, ...
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1answer
35 views

Why am I getting the GRUB screen?

Okay, so I recently decided to switch motherboards, and I succeeded. Ubuntu 16.04 LTS is currently my version, and it's set as my default OS. I dual boot Windows 10 and Ubuntu currently, and I feel ...
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20 views

How do I boot to windows 10? [duplicate]

I deleted from windows the Ubuntu partitions, when I restarted it got stuck on a black screen with the following: GNU GRUB version 2.02-beta2-9ubuntu1.7 Minimal BASH-like line editing is supported. ...
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20 views

ubuntu 14.04 : going automatically to memtest86+ on boot, never ending

On boot, my desktop starts memtest86+ automatically. This one never ends (I waited 3 hours). If I exit memtest86+, the machine reboot and starts it again. I found no option in the bios that would help ...
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2answers
66 views

Install Ubuntu on Hard drive and GRUB on USB

I would like to install ubuntu 16.04 on Hard drive, but I want to keep windows 7. What I want is to install ubuntu on a partition of the HDD, but I want it only to boot if I plug in USB Drive, and if ...
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60 views

How to stop Windows 10 from constantly overwriting the bootloader?

After switching to legacy boot and turning secure booting off I could trivially install ubuntu on my new Yoga 510 for dual booting. However (and I have now reinstalled grub from the ubuntu live image ...
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16 views

GRUB 2 waiting 6 seconds when GRUB_TIMEOUT=0

I set GRUB_TIMEOUT=0 in /etc/default/grub and yet when GRUB boots it still waits 6 seconds before booting the OS that is selected. I want it to boot the selected OS instantly and I thought that ...
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15 views

Xubuntu 14.04 boots to a blank screen after update

After rebooting my Xubuntu 14.04 boots to a blank screen after showing logo . I Thought it's because of a x.org server so I booted to Grub but there was no "failsafex" and I booted again normally ...
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1answer
15 views

Unable to view drive - receive error message

I installed GRUB to one of my drives, which caused it not to boot, and showing me "Error 17". However, I thought about deleting the GRUB directory, as my LiveCD/DVD Ubuntu can not run the GRUB ...
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24 views

Putting /home on a second hard drive [duplicate]

I have been searching google and I can't find the answer I am looking for. First, I have a mac running OS X with a 250gb ssd and a 120gb ssd. Currently the second (120gb) ssd is empty. I want to leave ...
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44 views

GRUB 2 does not start from BIOS

SYSLINUX boots from USB. Super Grub2 Disk 2.02s4 calls GRUB menu without a problem. No need to search for boot options. It is sufficient to select the default Super Grub2 Disk option: boot from HDD In ...
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1answer
71 views

How to boot between windows 10 and ubuntu without reboot?

My professor has asked me to find a way to install Ubuntu the computers at a lab that already has windows 10 installed. I know that I can dual install both of these OS seamlessly and be able to switch ...
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22 views

Mount partition with grub

thanks for responding this question I have a multiboot config with Windows and Ubuntu and i want to edit the config of the grub to unmount the Ubuntu partitions if Windows is chosen, and if is ...
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45 views

Replace Grub2 by W10(encrypted) bootloader on UEFI

I have two windows partitions, one of which is encrypted with bitlocker. Also I now added a third partition on which I installed Ubuntu. Unfortunately this gave me a cascading bootloader structure: ...
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33 views

Installation of any distro fails with grub error

I have PC with 5 disks. Primary is Windows 10, UEFI, GPT. And now I wanted to install a Ubuntu to another disk. So I installed by following partition scheme: /dev/sdb - msdos(no GPT partition) 300GB ...
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1answer
32 views

Grub2 not updating boot list. Booting with error: Failed to set MokListKT: Invalid Parameter

I am trying to get my dell r610 booting and I've been running into a few problems. The only OS that I am trying to run on my machine is Ubuntu server 16.04 LTS. I already have it installed and can ...
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2answers
85 views

Dual Booting with linux & windows, cannot boot to windows

I installed Linux on a Windows machine. I make music, so I use live 9, which is not for Linux, MAKE IT FOR LINUX! I wanted to boot to Linux, but well Linux gimp or boot select is fine, but I made it ...
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1answer
33 views

Upgraded Ubuntu to 14.04, can't login to my account & don't know the password of root

I upgraded my ubuntu from 12.04 LTS to 14.04 LTS recently. While installing the downloaded packages, my system hung up and restarted. That is how the problem started. It's not taking my old password. ...
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13 views

Can't update grub

I have changed my /etc/default/grub so: file with $ sudo nano /etc/default/grub Particularly note the line: GRUB_TIMEOUT=3 and I run $ sudo update-grub which result is: $ sudo update-grub [...
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40 views

No LCD display on startup. I have to close the laptop and open it again to make it come back

I have a Lenovo z475 Laptop and I have Xenial installed as a release upgrade from Wiley. After the upgrade, the Grub Menu never appears. The display goes black, and the only way to get it to turn on, ...
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26 views

Grub rescue Unknown file system

I have a new up computer that was running Ubuntu fine on first day had but after its first upgrade something has gone wrong and it is now in grub rescue mode. I'm considering sending it back but was ...
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1answer
75 views

Live USB or Live Install better for my needs

The question to be answered is... Which type of installation should I use on my USB (Live USB or full installation or an other options??) and how would I go about doing so to meet all my requirements?...
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29 views

Laptop boots to GRUB after removing ubuntu [duplicate]

I have attempted to uninstall ubuntu dual boot (8.1) using easybcd software by changing mbr and selecting skip the boot menu and by deleted the partitions of ubuntu. After I restarted my computer ...
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16 views

Grub boot from BIOS of Ubuntu

i need that you ask me about how to boot grub with two operatives system on the virtual machine. I´m ruuning with Windows 10 and Xubuntu 16.04 with UEFI configuration. Sudenly that Winddows 10 runs ...
0
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1answer
44 views

Ubuntu killed Window volume. How to reinstall window from Ubuntu [duplicate]

Ubuntu killed Window partition Hey guys, I have this trouble. At first my Lap has Ubuntu and Window. But the grub has crashed and the best way to save it was backup data and reinstall OS. I chose to ...
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2answers
186 views

Windows 10 update ruined by Windows/Ubuntu dual boot

I had a Ubuntu/Windows 7 dual boot set up on my laptop. An updater tried to install Windows 10 in the middle of the night and now when I start the laptop, I get the grub rescue prompt. I tried this ...
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1answer
129 views

Grub won't start Windows 10

I have had dual boot for a while now, having Windows 10 and Ubuntu 15.04. It was working perfectly. When I turned on the PC Grub would show up with Ubuntu and Windows 10 as options, both worked ...
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0answers
17 views

System wont regonize installation

I have Dell Vostro 15 and he wont regonize installation of ubuntu 16.04 or 14.04. I only have one system. I installed everything normal, after install he ask me to restart in order to make new ...
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1answer
30 views

how to recover my HDD partitions by ubuntu 16.04

Actually what I did,is I was trying to install Ubuntu 16.04. Unfortunately I selected 3rd option "Erase disk and install ubuntu with LVM option. It remapped my 3 partitions of HDD #1 Ubuntu OS (100GB)...
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1answer
34 views

Grub 2 crypto modules prompt issue

I am using grub2 on an mbr disk (not EFI) to boot Xubuntu 16.04. I have sort of a specialized setup, as follows: /dev/sda - MBR - Grub2 installed /dev/sda1 - ext2 - /mnt/boot /dev/sda2 - extended ...
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1answer
31 views

number of options of ubuntu keeps increasing after every restart.why?

my screen after starting and pressing F9 Have installed ubuntu along side windows 8 and also have run boot repair ,but have to press escape and F9 to boot ubuntu,number of options of ubuntu keeps ...
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1answer
23 views

Broken boot after increasing disk size

My ubuntu server will not boot after I increased the disk size. I'm still very new to using/troubleshooting linux/ubuntu and im not entirely sure how I have managed to break the boot/grub so ...
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1answer
118 views

What is the difference between Windows UEFI bootmgfw.efi and Windows UEFI bkpbootx64.efi? [closed]

Also help me by explaining why windows UEFI loader was first taking me to windows but now is redirecting back to this page:
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16 views

Cannot boot on windows 10 anymore and partition error

I installed ubuntu yesterday and had a lot of trouble in managing to start it up. Now it's working but I can seem to access to my windows 10 partition anymore, here is how it turned out : I ...
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1answer
25 views

Dual boot Lubuntu install not going well. (on old P4 w/ xp)

Have an unallocated partition, (Youtube vid), Have the 16.04iso on usb. Several different versions all crashed, or just didn't load from the usb. Can't write code, so if it's not fully auto-install, ...
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0answers
42 views

Fix GRUB for Ubuntu Installed on XFS Filesystem After Installing Windows 10

I have a triple boot with Ubuntu 16.04, Ubuntu 15.10, and Windows 10. The 16.04 installation is on an XFS file system. After installing Windows 10 and running boot-repair from an Ubuntu 16.04 live DVD,...