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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Ubuntu 16.04 booting to black screen with blinking cursor when adding additional hard drives

I recently updated my home Server to 16.04, undeniably the worst decision as I did not do it properly and just updated without backing up. Save all of the comments of back ups and what have you.I have ...
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1answer
25 views

Remove grub and keep only Ubuntu [duplicate]

I used to use Windows and Ubuntu on my pc. But I'm no longer a Windows user, now only Ubuntu. I tried to instal Ubuntu over the Windows, but grub still installed and asks every boot which system ...
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22 views

Grub2 installation from liveCD on HDD without installing linux

Before everything I would like to apologize, since english is not my mother tongue, I might do some grammar mistakes, I'm deeply sorry for the inconvinience. If i'm asking for help, it is because I've ...
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18 views

BIOS no longer finds a valid Boot option

Today I ran into the issue that my Asus ZenBook no longer finds a valid boot option. Therefore, I am immediately prompted into the BIOS after power on. I tried using Boot-Repair, which failed at the ...
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1answer
23 views

i8042: No controller found

There are other questions with the same issue (here and here), but in my case, instead of a MacBook I have this (I am not doing any kind of promotion of this product) Until today, everything was ...
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0answers
22 views

Boot widnows from grub prompt

I'm quite a noob with linux and I'm experiencing some huge troubles with an Ubuntu 16 installation. My system is composed of 2 disks: Windows 10 and Grub on the first (sda) and Ubuntu 16 on the ...
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22 views

Triple Boot: Win 7, Win 10, Ubuntu: How to uninstall Win 7 without disturbing Grub and Win 10 Boot Loader?

As the question states. I'd like to completely remove my Windows 7 OS partition, and maintain the other two Os'es, i.e. Windows 10 and Ubuntu. I know that issues can arise that disturb the boot ...
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0answers
30 views

Enable to recover data and linux partition after windows 10 upgrade

I have a dual-boot windows 8 and Ubuntu with a NTFS data partition on my laptop. After a forced migration to windows 10, my computer restarted on grub rescue mode and i was enable to boot on ubuntu ...
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1answer
39 views

Cannot boot Failed to open \efi\boot\grubx64.efi - not found

So I removed and then reinstalled my power supply a few months back on my home server and for some reason it stopped booting to ubuntu and working like it always has been. I've tried completely ...
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10 views

failure reading from sector error mean my HD is broken?

so something happened to my linux boot today and I cant get it too boot. I can get to the grub CL and when I run ls its saying failure reading from sector oxfc from "hd1". im guessing thats my hard ...
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1answer
44 views

Think my ubuntu just broke, not sure how to fix it

My laptop died on me and when I went to start it up, it wont boot ubuntu. I can get the menu in the picutre but if I click on ubuntu it just goes to like the background of ubuntu and gets stuck. ...
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1answer
29 views

After adding a disk ubuntu wont start normally (sda<->sdb)

In my notebook are 2 disks: mSata appears as sdb and SATA appears as sda. I did a fresh install on the mSATA (sdb) including GRUB. All is fine. But when I remove the SATA the mSATA becomes sda and ...
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1answer
38 views

Why Do I Keep Getting GRUB Command Line on Startup - Dual Booting Wins 8.1 and Ubuntu 14.04

I migrated data on my laptop's HDD which contains Windows 8.1 to my SSD and replaced the HDD with the SSD (My laptop has 2 hard drive bays btw). Currently, my Windows 8.1 and Ubuntu 14.04 are on their ...
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0answers
11 views

sysctl.conf or grub file for kernel parameters?

As far as I know it is possible to send kernel parameters with both the sysctl.conf and the grub2 configuration files at boot time. If the same parameter is configured using both methods which ...
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34 views

Installed Ubuntu 16.04 server doesnt boot

Today I install Ubuntu server 16.04 64Bit Installation complete, after reboot ubuntu doesnt show grub menu(I install grub loader in installation and write hanges to disc). I reboot again and push ...
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1answer
28 views

GRUB - automatically boot Ubuntu, or boot Windows when shift is held (WITHOUT showing the menu)?

Before someone marks it as such, this question is not a duplicate: I'm not only asking how to automatically boot Ubuntu and show GRUB's menu when I hold shift during boot. I want to set up GRUB so ...
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1answer
25 views

Trouble with dual boot Ubuntu and Windows

I recently installed ubuntu 14.04 alongside already existing Windows 10 on my system. After installation, grub was only showing Ubuntu and was not listing Windows as OS on my system. I followed ...
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1answer
35 views

Grub nomodeset and purple screen of death

I changed my grub settings by editing the file /etc/default/grub and adding "nomodeset" + "acpi_backlight=vendor". After the reboot I get stucked in a purple screen in which I can't do nothing. I ...
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0answers
9 views

Grub dissapears after configuring a windows 10 live usb stick

I have a Windows 10 PC that I installed Ubuntu 14.04 on a few months ago. I recently made a live Windows 10 bootable flash drive, which is when the flash drive acts as a hard drive with an OS. In ...
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0answers
36 views

Grub rescue error: Unknown Commands + Unknown FileSystem + Live Usb

I have been given an Asus EEE Pc 1201PN where Ubuntu and Windows 7 used to live in a dual-boot. When running Windows 7, the Ubuntu partition has been erased and thus, Grub is not working anymore when ...
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64 views

installation of ubuntu 16.04lts in uefi system with windows 10(dual boot)

I have a windows 10 hp 15 ac 124tx laptop. I have installed Ubuntu 16.04 two times, installation was successful but after some time Ubuntu partition wiped off automatically. I installed it in uefi ...
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1answer
43 views

Dual-boot Ubuntu/Windows 7 upgrade to Windows 10 failed

I attempted to upgrade my Windows 7 to Windows 10 on a dual-boot ASUS U56E laptop. After about five hours of download/prep/install, like many other people, I found myself presented with the grub ...
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0answers
18 views

Stuck at grub rescue prompt after terminating a windows installation

I recently began the installation process of windows 7 on my Ubuntu machine. When I got to the format option on the Windows OS install prompts, I remembered I had some files on my Ubuntu OS that I ...
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4answers
104 views
+350

grub2: update-grub failed to get canonical path of `none'

$ sudo update-grub /usr/sbin/grub-probe: error: failed to get canonical path of `none'. This is the situation I'm in after an interrupted upgrade from vivid to wily [edit] Further delving into ...
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1answer
25 views

Cannot boot into ubuntu after installing it on to hard drive

I was prompted to reboot after finishing the installing of ubuntu kylin(i have same problem with regular ubuntu) I either boot right into windows or if I remove the usb, I boot from the usb again ...
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1answer
27 views

Grub Rescue prompt appears after deleting Ubuntu partition. Can't boot Windows

I have an HP Pavilion dv 9543 cl. I decided that I wanted to update Win Vista to Win 8 several years ago, but did not know how to remove grub 2, so I naively decided to simply remove the Ubuntu ...
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3answers
66 views

UEFI/legacy issue : Ubuntu alongside Win10

I'm pretty much new on Linux and was planing to make dual-boot for a long time now. My problem basically is that after I installed ubuntu (16.04) alongside my windows 10 it can boot if i set legacy ...
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1answer
33 views

How is /etc/default/grub generated during installation?

I'm currently working on a project that needs kernel boot parameters added during a custom adapted Ubuntu installer (based on 14.04.3). I know that they belong into GRUB_CMDLINE_LINUX_DEFAULT in ...
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1answer
22 views

grub2 can't configure after failed upgrade on raid

I tried to upgrade ubuntu with standard apt-get upgrade and ran into similar problems to what is described here: https://www.webhostingtalk.com/showthread.php?t=1315016 grub went through a ...
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1answer
23 views

Black screen after grub or at reboot with LUKS encryption

I know this subject was already treated, and I found a "fix" to bypass this black screen thanks to this answer (LUKS encyption part): My computer boots to a black screen, what options do I have to fix ...
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87 views

failed command READ DMA

I have this strange error when I try to install Ubuntu It tries to install during one day to finally success to install Ubuntu probably because of this error. Do you have any idea of what happen? Is ...
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0answers
27 views

Mint wont boot after booting into Windows 10 [closed]

So, I installed Linux Mint along with Windows 10 in dual-boot. On starting the pc I was taken to the grub boot menu where I could select Linux Mint Cinnamon or Windows Boot Manager. If I selected ...
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0answers
66 views

Help Ubuntu and Windows won't shutdown

I've decided to install Ubuntu 16.04 along with Windows 10 on my Dell Inspiron 15 3000 Series. Now both OS's can't shut down properly. What is looks like is that all processes are killed during the ...
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1answer
75 views

Windows 10 broken after install Ubuntu

So I was with just windows 10 installed and I installed Ubuntu 16 here and now I can't boot windows 10 here's my paste boot info: http://paste2.org/gMBhJyMp If I check the windows partition with ...
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1answer
42 views

Server 16.04 - Default Grub Boot Option Fails

I'm able to get the server to boot by going into the advanced options and choosing the first option. My question is how can I automate this? Requiring someone to be at the console during the boot ...
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0answers
15 views

Add kernel boot parameter from package

I'm creating my own debian package which has to add a kernel boot parameter when installed in order to work properly. The place to have this is GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub. My ...
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0answers
32 views

After OS-Uninstaller tool (linux uninstall), now GPT ntfs partition/disk not visible in Windows 7

I have uninstalled Linux (Ubuntu or Mint - not sure) from dual boot using OS-Uninstaller tool, now boot menu is OK, boot to Windows 7 is OK, but HDD where Linux was installed is not recognized by ...
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18 views

Correcting crashing/grub issues with partially failed install

I had issues completing grub installation on an mdadm system with 16.04, and managed to hack it to boot. However now the system intermittently crashes and continually tries and fails to install ...
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0answers
39 views

How to Enable Predictable Network Interface Names?

Running Ubuntu 14.04, I've set GRUB_CMDLINE_LINUX_DEFAULT="net.ifnames=1" in /etc/default/grub. I've also removed /etc/udev/rules.d/70-persistent-net.rules and linked ...
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0answers
92 views

Linux Kernel 4.6 messes with Grub in Ubuntu 16.04? [closed]

I have a dual boot PC of running Ubuntu 16.04 LTS and Windows 10. I've using it for couple of days. Most of you may heard that Linus has just announced the official release of new Linux Kernel version ...
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0answers
20 views

After system updates ubuntu grub no longer boots on dual-boot system

Very new to Ubuntu and not very tech savvy so bare with me. I have been using Ubuntu on a dual-boot system for a couple of months - all fine. I haven't touched windows during this time. I did some ...
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0answers
4 views

fix boot - is it possible whith encrypted disk?

Is it possible to fix boot of encrypted disk ? only the ubuntu partition is encryoted (sda3). These are the partitions: sda1 - efi sda2 - grub sda3 - ubuntu I use removable disk, and just moved it ...
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1answer
33 views

Trouble booting Windows from GRUB [duplicate]

I have a Lenovo Y700 and I installed Ubuntu 16.04 yesterday. I downloaded the iso and installed it in my USB drive using YUMI. I had a problem trying to boot from the USB since it wasn't recognized. I ...
0
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1answer
17 views

Grub2 broken after editing grub.cfg

In attempting to update the bios on my machine so that it would allow me to utilize all of the installed RAM, I found instructions on adding the option to the GRUB bootloader menu. Since the only ...
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0answers
19 views

grub menu issue after windows 10 update

I recently updated my Windows partition to Windows 10, and it removed the grub menu. I have experienced this before, and there is much online about it. However, I have an issue that I haven't found a ...
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1answer
27 views

Dualboot with 2 seperate harddrives. HD1 has Ubuntu 14.04 HD2 has Windows7

I'm running Ubuntu 14.04 and Windows 7 on my PC, both 64 bit. The way I use it, is to turn off the PC, connect the Ubuntu HD if I want to use Ubuntu. If I want to use Windows, I disconnect the Ubuntu ...
2
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0answers
56 views

How to turn off the filesystem check message which occures while booting

What I want to achieve: I want to customize my complete boot of my Ubuntu 16.04 LTS installation to show the same wallpaper which is actually on my desktop. What I achieved till now: added the ...
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0answers
19 views

Boot Option during Startup

I have Windows 10 on my HDD, would like to install Ubuntu 16.04 LTS on SSD. During startup, Can I get a screen which shows me the option to "boot from" menu? It is possible to go to BIOS and select ...
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0answers
18 views

Dual Boot: Directly booting to Xubuntu without giving me option to boot Ubuntu MATE

I first installed Xubuntu in my laptop. I then installed Ubuntu MATE choosing the option 'Something else' in the installer to create manual partitions. I created a 60GB space for / and 30GB space for ...
0
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1answer
52 views

GRUB boot loader(Ubuntu) not working after updating

I have a system with ubuntu-14.04.2-desktop-amd64 installed. It has stopped booting up after updating. As I power on it, screen glows for 1 sec and it shuts down. I have tried to open GRUB boot loader ...