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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How can I access recovery mode, Ubuntu 14.04 LTS? [duplicate]

I managed to delete my only user from sudoers group, and now I can't do any administrative tasks anymore. I have been looking for an answer hours, and I guess that part of the problem is solved. But ...
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1answer
20 views

How can I restore control of my computer to the BIOS from grub?

I tried to use Parted Magic (unsuccessfully) and now when I try to boot I get the message: error: unknown filesystem. Entering rescue mode... grub rescue> When I go into the BIOS to override the HDD ...
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0answers
16 views

Can't boot into Windows

Well I did a stupid thing while repairing my boot loader system using EasyBCD on Windows. I selected Ubuntu as default bootloader and also selected the 'Skip the boot menu' option and applied those ...
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0answers
114 views

Can't install Ubuntu 16.04 on Sony Vaio

I hope you can help me quickly, even if my english isn't very well at this time. So: I got a Sony Vaio and Ubuntu 14.04 has been installed and worked fine till this morning. I have mounted the .iso ...
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0answers
17 views

live USB shutsdown after GRUB

I'm having an issue with my Ubuntu install - it randomly decided not to boot this morning, in trying to recover, I've downloaded and burnt to USB Ubuntu to create a live USB install. When I plug this ...
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1answer
17 views

Grub C Code in “set” output?

i made an interesting discovery. When i run set as root the output displays some c code... it seems like some grub boot-loader code.. followed by some unreadable parts. That seems a bit ... wired to ...
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0answers
29 views

Disable all boot messages (ubuntu 15.10) and login screen

I wrote simple application to display pictures at my home. This application starts just after boot (systemd: After = systemd-user-sessions.service network.target) and then uses xinit. I have a ...
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1answer
18 views

Libparted complaining about GPT signatures on disk

This warning comes up while using the Ubuntu studio "Live" from an USB stick, in a PC where the program is installed but the GRUB doesn't work. What does this mean and how can I fix this issue?
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3answers
88 views

Interrupted upgrade from 15.10 to 16.04, Ubuntu boots into black screen

What happened I was working on my laptop while it upgraded from 15.10 to 16.04 (which I admit was a mistake) when suddenly the Unity overlay disappeared and the only thing on screen was the Firefox ...
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82 views

16.04 update : several issues

I recently upgraded from ubuntu 15.10 to ubuntu 16.04 (and at the same time from gnome 3.16 to gnome 3.18 I think) and it all went pretty bad. The x server didn't want to start anymore. After some ...
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0answers
30 views

Grub menu installed on the wrong drive

So I was setting up my Linux along side windows 10 which I had installed on an external hard drive and everything worked great; I had windows 7 on my internal hard drive, and a duel boot win10/Linux ...
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0answers
7 views

Grub2 Alternative [duplicate]

Is there any other bootloaders that work well for Windows 10, Ubuntu, and live ISOs? I don't have a problem with grub2, just interested in other options.
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2answers
39 views

Ubuntu 15.10 then windows 7 dual boot issue

I've been using Ubuntu 15.10 for a while, but recently installed Windows 7 (quite reluctantly) on the same SSD (converting partition table to GPT as required) but on separate NTFS partition. I thought ...
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1answer
63 views

System doesn't boot GRUB/Ubuntu

After installing Ubuntu via a USB and restarting the computer it only boots windows. I checked on the BIOS and Ubuntu doesn't appear. I can boot into Ubuntu using the USB: it boots the menu: try ...
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0answers
48 views

Accidentally deleted ubuntu 14.04

To fix after accidentally deleting Ubuntu 14.04 in dual OS PC, I have followed the community forum on this site "http://searchdatacenter.techtarget.com/answer/Help-I-deleted-a-Linux-boot-partition". ...
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1answer
102 views

Troubleshooting Secure Boot

When trying to boot Ubuntu with UEFI Secure Boot enabled, I get the following error when loading GRUB: Boot failure : a proper digital signature was not found. One of the files on the selected ...
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1answer
63 views

Grub and UEFI boot Problem

My laptop is Lenovo thinkpad edge e530c. I was trying to boot Ubuntu 16.04 amd64 ISO from Grub. So I created the following menu entry for Ubuntu ISO in /etc/grub.d/40_custom file on the current ubuntu ...
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1answer
23 views

Blank screen that does not accept any input, while trying to intall Ubuntu

While trying to install Ubuntu over my Windows partition, I encountered an exception and had to restart the system. Since then, when the system starts, it boots to a blank screen with the cursor ...
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1answer
37 views

Help removing grub from dual booted Surface Pro

I had ubuntu installed on my Surface Pro 1 on a 32gb micro sd card. I ended up not using ubuntu too much on this machine, as i do all my power user processes on my desktop running ubuntu, and windows ...
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1answer
68 views

Add an eSATA drive with bootable Ubuntu 16.04 to a Windows 7 UEFI dual boot PC

I have a HP Envy 700-215xt, with UEFI, and WIndows 7 on it's original 1 TB drive. I've added a 2 TB internal drive, initialized as GPT, and installed Fedora 22 on it's first 500 GB. The UEFI boot ...
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1answer
25 views

Open core.img in GRUB2

I have GRUB2 installed to a flash drive. I want to try editing the main.c file to change the header title of GRUB. How can I mount core.img? The directory is: ...
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0answers
29 views

Having BIOS+UEFI on MBR Partitioning Scheme

I have a Dell laptop with a Windows + Ubuntu dual boot configuration in Legacy boot. I wanted to try out Ubuntu in UEFI since it would boot in just about 2~3 seconds in my earlier config. So my ...
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0answers
32 views
+100

Error unknown command hwmatch

I'm getting "unknown command hwmatch" message on each boot after I installed Ubuntu 16.04 following this steps: https://gist.github.com/umpirsky/6ee1f870e759815333c8 in order to setup RAID0. Special ...
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0answers
18 views

Something went wrong when I attempted to install Ubuntu on an external hard drive

I tried to do an installation of ubuntu 15.04 on an external hard drive following the instructions given in this post. I followed the steps but I most likely made a huge mistake. Currently I can't ...
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2answers
40 views

Installing another Linux Distro

I had Elementary OS on my laptop and Windows 8 as a main system.EOS is not good enough for me, so i deleted it and I am with Win and Grub. Now I want to install Ubuntu, and don't know if should i ...
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1answer
54 views

Ubuntu Can`t Boot After Failing To Install

This is my situation: I had in my hard drive two operating systems: Windows 8.1 and Ubuntu 12.04 LTS Precise Pangolin. Using a bootable USB stick, I created another partition to install in it the ...
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0answers
32 views

How Do I Change the Boot Loader to Load Ubuntu on a Different Hard Drive in Windows 10?

I've just done a successful installation of Ubuntu onto a brand new hard drive, but now I don't know how to load the Ubuntu OS. It does not show up when I boot my computer in the "Choose an Operating ...
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2answers
60 views

Windows and Linux on different HDD and no grub, possible?

I have a notebook with one SSD and one mSATA. I'd like to install Windows 10 LTSB N in the SSD and Ubuntu 16.04 in the mSATA. Can I have those two installed without Grub 2? I mean, I only want to ...
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0answers
23 views

GPT, grub and mdadm. sda drive replaced, raid rebuilt in recovery mode, but now server won't boot

This is how partition table loooks like: (parted) print Model: ATA TOSHIBA DT01ACA2 (scsi) Disk /dev/sda: 2000GB Sector size ...
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0answers
21 views

deleted /etc/grub.d/10_lupin on accident

i was playing around with sudo on accident,and I know it is a very harmful tool to play with,but accidentally,instead of typing sudo VI it took me to sudo /etc/grub.d/10_lupin. can this be repaired ...
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1answer
79 views

i only have one resolution 640x480 desktop looks zoomed in

ok i fixed this once but have no idea what i did system crashed and now im back to just entering random stuff that dosnt work off the 300 fourm pages about it. im conserned about edinting things that ...
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0answers
78 views

how to speed Ubuntu 16.04 LTS bootloading time

Good day fellas, I recently replaced windows 10 with Ubuntu 16.04 LTS OS, now it is taking taking too long to boot. Below is the link I got after running boot-repair recommended settings ...
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1answer
54 views

Failing GRUB installation and Boot-repair

Here is my earlier issue: Booting issue & Boot-Repair not working Despite of possible hard drive problems I have tried to install Linux Mint to my laptop via USB (Linux Mint because I'm not aware ...
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0answers
19 views

Ubuntu doesn't prompt for disk password when booting

I have an Arch partition installed on a LVM volume. It corresponding physical volume is in an encrypted partition (I used cryptsetup to do this). I installed Ubuntu Studio 15.10 in another logical ...
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0answers
132 views

Ubuntu 16.04 - New install shows strange failed message

Just Installed Ubuntu 16.04 alongside Win 10, install completed ok, went to re boot and got this message so thought I would type it up here incase it is relevant to any troubles I'm about to have with ...
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0answers
44 views

Add grub menu for OS X

I installed Ubuntu 16.04 Desktop on my MacBook Pro, and cannot boot OS X now. My disk partition table is: Device Start End Sectors Size Type /dev/sda1 40 409639 409600 ...
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0answers
28 views

Dual-boot - grub failed to install

i am trying to dual boot windows 10 and ubuntu. I already have win 10 installed in non uefi mode and i am trying to install ubuntu (also non uefi) on the same SSD. I do have Secure boot disabled. I ...
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0answers
33 views

I have a problem with dual boot after setup

Today I have downloaded Ubuntu but I can't use Ubuntu with windows like dual boot, for everytime I have to change boot order by hand while setuping Ubuntu I didn't prepare memory for Ubuntu by Hand it ...
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4answers
43 views

Being started of Ubuntu [closed]

I am a new comer of Linux. I went into the official website of Linux and it recommends me to use Ubuntu. And I have some questions about Ubuntu. Is Ubuntu free of charge? Now I am using Windows, do ...
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0answers
19 views

Trying to boot from usb stick but I get to GRUB instead

I already have Ubuntu Studio 14.04 alongside Windows 7, but I'd like to try the latest version of the OS that I flashed on a USB stick. However, even if I select to boot from USB on my computer's boot ...
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1answer
674 views

Does this answer work for UEFI computers?

One of my most popular answers is instructions on how to repair grub. Over time, others have contributed bug fixes to the answer. A recent comment, though, made me wonder if it works on newer UEFI ...
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0answers
10 views

Grub2 doesn't display correctly - most of the time (inspiron 1090)

I have a Dell Inspiron Mini Duo (1090) with a 16GB samsung SSD and a fresh Ubuntu 16.04 installation. My issue is with Grub2. Most of the time, when the laptop starts up, all I get is a blank maroon ...
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0answers
20 views

Ubunutu won't boot when secondary storage drive is removed

I have a secondary storage drive installed in the optical drive. If I remove this drive I cannot boot and get dumped into emergency mode. When I put the drive back in, I have no problems. Is there ...
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0answers
54 views

Can't boot up a persistent Live USB with Ubuntu 15.10/16.04

So I've created a bootable live usb with Lili and UNetbootin without persistence, which boot up perfectly fine, but when I shrink the partition and create an ext2 or ext4 partition labeled casper-rw ...
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0answers
12 views

Access to hard-drive when machine won't boot

Recently I tried to downgrade my kernel (from 3.13 to 2.6.24), and I made sure that the 2.6.24 kernel compiled and installed without any errors. I also updated the grub file to boot with the newly ...
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0answers
32 views

Easybcd not detecting Linux Grub

Firstly, I'm an amateur (read novice). I "successfully" (that was the message) installed ubuntu ion my windows 10 system. However, Grub was not detected either at startup or by Easybcd and in ...
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0answers
24 views

missing UUID of my root partition f2fs

Found some tutorials how to migrate my root system from ext2 onto another partition with f2fs. Unfotunately my f2fs partition hsn't got an UUID. Hence on a SSD and normally I'm booting it in virtual ...
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0answers
34 views

Dual boot windows7 no GRUB goes straight to Linux

I know this is a common issue with many posts about it but can't find any with same scenario. I have 2 hard disks (SATA + SSD). I installed and had Windows 7 running in the SSD one that (I found ...
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1answer
58 views

Did I brick my laptop trying to uninstall Ubuntu?

I had Ubuntu dual booting and wanted to remove it. I followed the instructions at "How to Geek" It says "it is hard" to tell which partition (the 2 unnamed partitions it will not let me remove) to ...
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3answers
325 views

Ubuntu 16.04 has no VMWare console access once booted on VMWare vSphere 5.5 Cluster with EFI

I installed a fresh Ubuntu Server 16.04 on our VMWare cluster to try it out and begin building a template for it. After install, the IP address is displayed and it seems to work if I SSH into it, but ...