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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Reinstalling grub2 from an ubuntu live usb

I've installed FreeBsd along with Arch and Windows in place of Ubuntu. So initially I had Ubuntu, Arch and Windows. I did something wrong and now it boots in grub menu. I've created a live ubuntu ...
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1answer
23 views

Unable to boot Ubuntu 14.04 suddenly

I was doing a lot of system installs such as GL, cmake etc. I finished installing and I am unable to reboot Ubuntu 14.04 LTS. I ran the hardware diagnostics and no errors were found. It starts and you ...
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1answer
9 views

Ubuntu 16.04 LUKS passcode does not appear

I installed an encrypted version of Ubuntu on my PC. If I start my computer appears this login screen: I'm unable to type in the passcode. Nothing appears. Also if I type in the correct passcode and ...
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13 views

Not able to install ubuntu 16.04 alongside window 8.1

I have tried to install the ubuntu 16.04 alongside window 8.1 but it is not showing option of install alongside windows boot manager. further on selecting something else and there it is only showing ...
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1answer
19 views

Unable to boot from USB on Windows after removing dual booted linux

I had previously installed elementary OS on my windows laptop and was trying to install normal ubuntu alongside it, but I kept having the issue of not being able to boot from the USB with the ubuntu ...
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2answers
17 views

Unable to enter BIOS/SETUP before Grub bootloader appears

, My name's aJ. I have a Dell Inspiron 7537 w/ core-i7. I used to dual boot windows and Linux,, which was fine. However later, i ended up booting from Linux Ubuntu 16.04 and making that the only OS ...
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2answers
18 views

black screen after installing Ubuntu

Hopefully this has an easy solution. I recently installed Ubuntu using the Ubiquity installer for the latest release. Due to my hardware, in order to install it from my USB, i had to use the nomodeset ...
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15 views

4 operating systems boot problem fedora , Kali , Ubuntu , windows

It's kinda confusing , but I have these systems with grub loader I think fedora was holding the boot , after windows boot crashed I tried fixmbr and it completely erased other oSes from boot menu , I ...
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1answer
8 views

How to access recovery console without using grub?

So I just got a computer from work for free but it's a rather old iMac, probably from 2006, and it has Ubuntu on it. I have no clue how to use this software and the previous owner is unknown so I can'...
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27 views

How do I add an ID to a menu entry to GRUB config?

I want to add an ID to any menu entry in the Grub config and then auto generate the configuration by changing /etc/default/grub file DEFAULT_GRUB = desired_linux_version I already did but grub ...
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2answers
32 views

Dual boot option menu

I installed Windows 7 and 64 bit Ubuntu 14.04 LTS on my PC and both worked very smoothly. Since I updated by ubuntu last month, the system starts directly to ubuntu OS. I can't see GRUB menu, which ...
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1answer
4k views

Can't find Windows 10 on GRUB

I'm a linux newbie and ran into this problem when trying to install Ubuntu as dual-boot with my Windows 10. I've done that before with Windows 7, with wubi. But I read that wubi wasn't the preferred ...
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1answer
95 views

Dual boot Windows 10 & Ubuntu 16.04 — blank purple screen of death when booting Windows!

This is on my Dell XPS 9550 laptop with 512GB Samsung P951 NVMe SSD. I first installed Windows 10 and it boot up just fine. Then I shrinked the volume for Ubuntu and installed it via Live USB ("...
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1answer
14 views

Can't boot from clean install

I've recently been having trouble booting my computer. I tried to re-install some NVIDIA drivers after an update broke CUDA and led to some poor video performance. However that led to some conflicts,...
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2answers
16 views

Booting ubuntu from USB drive using grub and then resizing parition

I currently have a dual partition - windows and ubuntu, setup on my computer. However, I would like to resize my ubuntu partition to create more space. I believe to do this from ubuntu I need to ...
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1answer
37 views

How can I convert Ubuntu to UEFI

I want to install Ubuntu 14.04.4 in UEFI mode alongside windows 8, which is already in UEFI mode. My partition scheme is GPT. Ubuntu is on /dev/sda5. Legacy bootloader on /dev/sda. Windows on /dev/...
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3answers
111 views

Lenovo IdeaPad 100s grub installation failed and disk disappeared

A few days ago I bought a cheap Lenovo IdeaPad 100s and it's a great laptop shipped with Windows 10. Since then I've been trying to install Ubuntu on it but I have failed to do so. What I did is I ...
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0answers
31 views

Ubuntu restart works fine but shutdown does not?

Why does my Ubuntu not shut down properly? My Ubuntu restart works fine but shutdown does not properly. I modified the grub like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash reboot=pci" My ...
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0answers
9 views

Windows 7 screen does not shows after dual booting of my Dell Inspiron 15 3542 Core i3 Laptop

I recently tried to dual boot my Dell Inspiron 15 3542 Core i3 laptop (64 bit) using Ubuntu 16.4 which already had Windows 7 on installed. The process of dual booting completed successfully but when ...
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0answers
25 views

The mysterious : Error parsing PCC subspaces from PCCT

I'm a long time LTS Ubuntu user, I recently changed my aging ASUS notebook to a Lenovo T450. The latter came with windows 10, so I decided to wipe it with the fresh 16.04 Ubuntu. The install (via a ...
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1answer
29 views

Reinstalling Ubuntu as a solution to my issue

As I've posted before, Installing Windows 8.1 over Ubuntu has caused the deletion(?) of grub, and thus I cannot get into Ubuntu. I have tried both repairing grub through the command line on a Live USB,...
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1answer
18 views

14.04 login loop; tried suggested solutions but no luck; will work with older linux kernel

I'm still rather new to Linux. Login loop started earlier this week after an update that required a reboot. I searched here and found suggestions for doing a package repair via "recovery mode" (did ...
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1answer
14 views

NumLock turns off after GRUB

In the BIOS settings, NumLock is turned on. The NumLock will continue to turn on but after you choose your OS with GRUB it will turn off automatically. The NumLock is still on while on GRUB screen ...
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1answer
265 views

no grub menu after ubuntu 15.10 install : dell xps 9350

Was discussing my woes dual booting win10 and ubuntu on a new dell xps 13 9350 in this q, and thought this issue merited its own question. what I have done so far did a clean install of win 10 ...
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0answers
117 views

Ubuntu 16.04 splash screen freeze

After a little while of having Ubuntu 16.04 (which I upgraded from 15.04) I keep on getting the splash screen to freeze after a few animations cycle of the dots where it end up like this: and ...
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0answers
13 views

Lenovo G580 Zorin OS killed my bios. I can no longer access the bios or boot menu [on hold]

I am struggling with a very serious problem with my old laptop. I installed Zorin OS to my laptop and now Every time I try to access the bios or the boot menu It says please wait after pressing the ...
2
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1answer
692 views

Ubuntu full disk encryption with encrypted /boot

I'm trying to setup a full encrypted disk with a separate /boot partition and I'm having some troubles. I'll write down the procedure I've been following on a Ubuntu 15.04 Live DVD session. Fill ...
2
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2answers
6k views

No boot option after installing Ubuntu 12.04 LTS on Acer Aspire 4736z with Live CD

I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7. Before that i was having an ...
2
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3answers
24k views

Add Windows 10 to GRUB OS list

I recently got a computer from school. It came with Windows 8.1 installed. I then installed another copy of Windows 8.1 (so it would use the built-in Windows Pro license) and upgraded it to Windows 10....
2
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1answer
35 views

Attempted to Repair GRUB through live USB. Has not worked, cannot get into Ubuntu

Made a post earlier here: Installed Windows 8.1 over 7. Can't Get into Ubuntu 14.04 Essentially, Had Windows 7 on my system first, as is recommended. Afterwards, Ubuntu was installed. Now after ...
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0answers
13 views

Laptop loads to black screen intermittently when booting from Ubuntu 16.04 live USB

My hard drive got busted, but since I only need to access a browser for most of my work, I decided to wing it by using a live USB. Unfortunately, there are some problems related to the screen. The ...
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0answers
15 views

hd0 read error on boot

My computer was hanged while it was shutting down and I had to hard reboot the system by pressing the power button. When the system booted back I got the message error: hd0 read error and the ...
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1answer
143 views

Cannot mount 2 windows merged ntfs volumes in ubuntu 14.04 [on hold]

when my brand new Ubuntu is trying to mount my two hard drives that was merged in windows 7 I get this message: Error mounting /dev/sdc1 at /media/luttikon/Media 1: Command-line `mount -t "ntfs" -o "...
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0answers
14 views

Dual-Boot Ubuntu/Win7/ (Ubuntu was installed first) Updating Ubuntu version to latest Format C [on hold]

I have a Dual-Boot Ubuntu/Win7/ System on my old laptop, with Ubuntu installed first, I then updated and edited my version to a text-only Linux-based version, for some reason... Now I need to Update ...
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0answers
30 views

minimal bash line editing error in ubuntu 14.04 LTS

I tried this link but I got the following errors: Cannot add PPA: 'ppa:yannubuntu/boot-repair'. Please check that the PPA name or format is correct. and even this doesn't seem to work, nano /etc/...
0
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1answer
24 views

Permission Denied updating grub as root

I bought a MSI laptop recently and I struggled to install Ubuntu. Now I have it installed and I have two problems. One of the is that I need to modify the grub file but when I try(update-grub) it ...
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2answers
89 views

Grub problems on dual boot windows 10 / ubuntu 16.04 laptop using samsung 950 pro ssd's

I have been googling like crazy to solve this issue and most of the posted solutions have failed. I am trying to dual boot an Alienware 17 R3 computer that came with Windows 10 preinstalled on a 1TB ...
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1answer
49 views

Can you use a different bootloader rather than GRUB?

Title says all. I'm trying to see if another alternative to GRUB is working. If you can do it, what are the steps? If you can't do it, why?
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0answers
12 views

Can't boot windows after both windows and linux were working together (Get Repair Windows Option)

I had both OSs working together, then I did a chown on an external HDD and can not longer boot windows. Drives: SSD 223 GiB sda1 fat32 142 MiB boot,esp (UEFI Boot) sda2 ext4 37 GiB ...
5
votes
4answers
15k views

Dual boot menu not showing after installation of Ubuntu 12.04

Before installing Ubuntu 12.04, Windows XP with three drives were there. I've installed Ubuntu 12.04 64 bit in of the three drives which I've mentioned above, installation went fine but after ...
2
votes
2answers
4k views

How to preseed installing grub to a device during installation without prompt?

I am trying to do a fully automated ubuntu preseed installation. I am stuck because I cannot preseed the answer to installing grub on a device other than /dev/sda without having to manually hit "enter"...
2
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3answers
34 views

Update problems… Errors Errors

I tried everything like removing the 24 kernel manually but no matter what I do this is my output of sudo apt-get upgrade: Reading package lists... Done Building dependency tree Reading state ...
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1answer
22 views

HP Pavilion X2 10: Cannot boot Windows 10 efi [on hold]

I have this new model of detachable HP Pavilion X2 10 (n182ng). I am not able to boot into USB installer for Windows 10. I downloaded iso from Microsoft site and copied onto pendrive using Disks ...
0
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1answer
15 views

How can GRUB access initramfs file if its stored in RAID

I am reading about how boot process in Linux works and just cannot understand one thing: If GRUB is the one who copies initramfs into memory and only after that init process starts (which is then ...
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0answers
14 views

Device Not Found - GRUB rescue

Sorry if this answer is already out here somewhere...I've been trying numerous 'fixes' found here, but nothing is working. Here are the details: I installed Ubuntu Linux LTS on my PC. I have two ...
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2answers
41 views

Computer not booting after update installed!

My Ubuntu 16.04 was working fine until it got updated to the "latest version". Now the whole machine is just conked up. It is just conked up. It shows the following : Scanning for Btrfs filesystems ...
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36 views

Windows Boot Manager is not loading

I installed Ubuntu over Windows 8 in my HP laptop. After installing Ubuntu over Windows 8, the first problem occurred. First problem is Ubuntu grub is not loading and directly goes to Windows 8. Using ...
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0answers
18 views

Error Unknown File system

After deleting the lubuntu partition and reboot my pc. i got into grub rescue I tried to do ls I got (hd0) (hd0,msdos1) (fd0) I try this commands set root=(hd0) set prefix=(hd0)/boot/grub but when ...
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0answers
59 views

Ubuntu 16.04 slow boot (apt-daily.service)

Yes i know there is already a question with similar title , but mine is a little different . My boot is horribly slow ,i don't know why. This output from my terminal might help. ashwin@MS-7327:~$ ...
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18 views

How do I tell the boot loader where grub.cfg is?

I have 4 partitions on my boot drive: /dev/sda1 which has Ubuntu 12.04, /dev/sda3 which has 15.10, /dev/sda4 which has 16.04 and which is big, and /dev/sda5 which has 16.04 and is small. When I boot, ...