GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use the GRUB2 tag for questions dealing with GRUB2, a rewritten version.

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Windows boot manager was destroyed after installing Ubuntu 14.04

I tried installing Ubuntu 14.04 in Lenovo G50 which runs on Pentium processor. The system already had Windows 8 (manually installed). I separated 50 GB from a partition and turned off Fast boot and ...
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tty resolution breaks down after suspend & resume on Linux

I am running $ uname -sr Linux 4.0.5-gentoo with an Nvidia GeForce 750 Ti card and $ eix nvidia-drivers [I] x11-drivers/nvidia-drivers ... Installed versions: 355.11-r2^msd(01:51:54 ...
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2answers
33 views

How can I boot into Ubuntu where grub was removed?

Here's my situation: I installed Ubuntu on my work laptop on a partition before IT implemented whole hard drive encryption via bitlocker. I had to do some quick work when IT announced they were ...
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2answers
3k views

How to fix Truecrypt MBR using Command Prompt or Linux live USB?

I was playing with TrueCrypt and decided to make a fresh installation of Windows 7 from USB stick. Unfortunately Windows 7 installer: "setup was unable to create a new system partition" My entire ...
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9 views

Get correct Windows partition back in Grub

Model: HP Compaq Mini 32 bit. Device: Samsung Evo SSD 120 GB. OS: Dual boot --> Linux Mint 17.1 Xfce & Windows 7 Starter. TLDR: Fixed Grub + got Mint back using parted rescue; win7 reboots or ...
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14 views

How do I install GRUB as a boot loader when I currently use Mac OS X (Yosemite)

I currently have a Hackintosh running Mac OS X Yosemite. I'm in the process of updating it to El Capitan any day now. I have an empty drive slot that I'd like to install Ubuntu onto. I'd like to use ...
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10 views

GRUB Rescue Normal Error on Debian

Recently I installed Debian for temporary usage. The install failed for whatever reason, so I went to switch over to Windows 10 which resides on the same drive. However, On boot, the GRUB Rescue ...
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1answer
21 views

BIOS can not find hard disk in boot priorities

I was installing Linux Kali os 2.0 but have got an error while installing grub, so I was unable to start installed kali os and also second OS, Windows 8.1. Only what was possible was to start live ...
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3answers
1k views

Installing Windows Update 3033929

I am using grub as default boot loader for my dual boot laptop (DELL Vostro 3750). My system is currently undergoing a reboot loop (infinite) because of Windows Update 3033929. As described here: ...
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11 views

Linux-mint MATE installation failure

Question Looking for guidance on next steps from the current situation. Read on... Issue #1 Getting error when installing Linux Mint MATE. No number/code is provided. It simply says that it was ...
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2answers
24k views

GRUB: how find partition number (hd0,x)?

i am playing with grub and i change the root using: root (hda,x) how can i know what's x for /dev/sda7 ? fdisk -l Device Boot Start End Blocks Id System /dev/sda1 * ...
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19 views

Disk encryption with separate /boot partition

I'm trying to setup an encrypted filesystem with a separate /boot partition and I'm having some troubles and there's no a complete and definite guide about this topic. I'll write down the procedure ...
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0answers
15 views

I think I broke my PC Grub Rescue

I accidentally removed the Ubuntu partition I had on my PC and when I restarted I was prompted with Grub rescue I've tried to find the partition and to set root and prefix but each time I do ls ...
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0answers
9 views

GRUB 2 boot from IMG file

So, I have a laptop running Linux (Ubuntu 14.04). I migrated my install from a previous hard drive that the laptop used after replacing the hard drive. Then, I deleted the Windows partition and the ...
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0answers
14 views

Surface Pro 3 - UEFI Keyboard on Grub Menu

I have installed Debian with Grub2 EFI on Surface Pro 3. I have also installed Windows. I have noticed that onscreen keyboard (same as on UEFI settings menu) appeared randomly in case of cover ...
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1answer
16 views

doubleboot uuntu/win10: GRUB not recognising the correct win10 partition

I have a windows10 ubuntu doubleboot on lenovo t450s thinkpad, and when the GRUB menu appears, I only have an option to load from Windows recovery partition, which upon selection, comes up with error ...
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2answers
104 views

Ubuntu Full Disk Encryption unlocked via TFTP/NFS?

I'm setting up some secure Ubuntu servers with full disk encryption. They have a small boot partition, and a large LUKS-encrypted disk with LVM to provide the rest of the partitions. Currently, they ...
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3answers
17k views

How would I reinstall the grub-efi bootloader on Fedora Linux?

I recently installed Fedora 18 using EFI boot. Like the other current linux distributions, it sets up GRUB2 for me. I have experience with re-installing the BIOS version of GRUB when things go ...
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0answers
10 views

grub always hides menu and boots to Ubuntu 14.04; must press ESC

No matter what I change in /etc/default/grub or /boot/grub/menu.list, grub always hides the menu, shows a 10 second countdown timer, and then boots to default (Ubuntu 14.04). To access MacOs, I must ...
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1answer
31 views

Disable Windows access to UEFI NVRAM

I have written bash script which adds Grub Entry to UEFI NVRAM. Scripts is invoked by bootable USB linux. This command adds entry: efibootmgr -c -d /dev/sda -p 2 -L "Grub2" -l "\EFI\Boot\shimx64.efi" ...
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0answers
18 views

How does Windows 10 stand up to being relocated?

I'd like to rearrange how my hard drive is laid out, and I'd like to take my Windows 10 partition and put it's own separate, smaller drive. If I'm using grub to boot, can I just run update-grub and ...
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2answers
3k views

How to install GRUB command-line tools on OSX?

I need access to grub-mkrescue for a project I'm working on. I know that the GRUB command-line tools come builtin to Linux, but how do I get them on OSX? Is there a package? Is it built into the ...
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41 views

BIOS - Change order of hard disk device to boot

I did an installtion of a Linux distro onto a USB and it all went fine. I've been using the BIOS settings to choose whether I want to boot the hard disk (with just Windows) and the USB. All seems to ...
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1answer
19 views

Windows can't boot after Samsung Recovery Solution 5 restored it

This is the story: I have (or should I say had?) windows 7 "home basic" edition, service pack 1 installed (preinstalled from factory). One day I installed two Linux OS: First Debian 8.3 Jessie and ...
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4answers
10k views

error: no such partition. Grub rescue

I deleted my Linux (Ubuntu) partition from Windows and I forgot to repair the MBR. I don't have my windows boot CD with me nor a CD drive. Is there any small utility that can be easily downloaded (I ...
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6answers
9k views

How to create multiboot flash drive

I've found a guide here: http://www.pendrivelinux.com/boot-multiple-iso-from-usb-multiboot-usb/ And found this menu.lst in my flash drive, which seems to be the one that I'm seeing when I boot using ...
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3answers
85 views

Add additional boot option to Grub for X32 extensions?

I work with a free/open source project. A Debian maintainer reported a failure under X32 (not a typo; its not X86), and I'm trying to set up a test environment to reproduce it. According Debian's X32 ...
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2answers
73 views

How to boot Ubuntu from BIOS wakeup and otherwise boot Windows

I have a dual boot system. My Ubuntu partition needs to boot automatically on BIOS scheduled wakeup (and wakeonlan if possible) Otherwise I want to boot into Windows by default. (power button) How ...
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0answers
27 views

Uninstalling/removing bootloaders on Windows 10

I have been messing around with various Linux distros over the last few months on my laptop since I first became interested in using it. Any distro I have installed, I have done so in a dual-boot ...
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0answers
63 views

Mactel Fedora 23 - Debugging Slow EFI Boot

I recently installed Fedora 23 on my Macbook4,1 (early 2008 model). After the white screen/apple sound at boot, I see a black screen with an underscore cursor for about 10-15 seconds before the Grub ...
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0answers
3 views

Installing grub with linuxelf support

I have a centos 7 x86_64 setup in my workstation but when I hit # grub2-install /dev/sda it says that Installing for i386-pc platform. How this can be happen? How can I install appropriate ...
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1answer
5k views

With Centos 7 as a Virtualbox guest on a Mac Host, how can I change the screen resolution of the console / command line?

I am using the minimum install of CentOS 7 with command line access only (no graphic support installed). After spending hours reading online about editing grub files, installing guest additions, and ...
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2answers
3k views

Dual booting Linux/Win7, Grub refuses to load Win7

Decided to give Linux Mint a try (Ubuntu's interface annoys me), so I installed it with the intention of dual booting with Windows 7. Installation went fine, but now I can only boot into Linux Mint. ...
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1answer
4k views

What is the correct way to install linux on a Macbook Pro

I've had a lot of trouble doing this. It always is unable to boot after installation (I get the famous question-mark in a folder thing). I've installed http://www.rodsbooks.com/refind/ however after ...
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2answers
1k views

How to repair boot in a dual boot setup with two Windows 7?

I installed a second Windows 7 installation on a separate hard drive on a computer that already had a Windows 7 installation. Initially all worked great - each time I restarted I received a boot menu ...
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1answer
3k views

Install CentOS on top of Ubuntu (dual boot)

I have a Ubuntu desktop and would like to install CentOS on top of it as a dual boot. The machine has two drives, each with one partition. I don't want to risk harming my Ubuntu installation. I'd ...
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0answers
20 views

Cannot find root device when loading a new kernel image

I am trying to install an old linux kernel image 2.6.32.69 just for learning purposes. The machine is ubuntu 15.10 32 bit. The commands to build kernel are: make oldconfig make bzImage make modules ...
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18 views

Grub won't recognise USB stick

I am trying to boot to a USB stick using this guide. But unfortunately Grub won't recognise my usb stick when I type root ([tab], 0). Is there any way to solve this issue? I've tried copying the files ...
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1answer
4k views

How do I remove Grub and restore the XP bootloader without access to XP setup/recovery media?

I have a Lenovo T430, with Windows XP (32-bit). I tried to remove Ubuntu from my HDD by deleting the partitions in Disk Management. Now, when I restart my computer, I get the following message: grub ...
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2answers
4k views

Add Windows boot entries after installing Ubuntu?

I have Windows 7 on its own bootable hard drive, Windows 8 on its own bootable hard drive and Ubuntu on its own bootable hard drive. I'm using the BIOS to manually select on which hard drive to boot. ...
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0answers
23 views

How can I boot Hirens Boot with Multisystem?

I installed Multisystem and I installed on an USB some Linux distros and hirens boot, but it does not copy-paste the .iso like with the distros, it extracts the iso to the root os the pendrive. Then, ...
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0answers
29 views

Out of memory when booting

I have a dual boot system. Running Elementary OS in one partition and Windows 10 in another. I received an update for Linux kernel and applied it, then my computer was not able to boot Elementary nor ...
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1answer
4k views

Can't get 1440x900 resolution with GRUB2 although vbeinfo says it's available

I'm trying to use GRUB2 in graphical mode with 1440x900 resolution, but the result is always garbled nonsense: the highest resolution I can get is 1280x800. Word is from googling that long as vbeinfo ...
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0answers
10 views

Grub missing after fresh Linux installation

I just installed ElementaryOS (an Ubuntu based Linux distribution), which I've used before, but the Boot menu doesn't show up. It just starts Windows directly. I have tried literally every solution I ...
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1answer
192 views

Windows boot problems after installing Ubuntu

I have been using Windows 8.1 on my laptop(lenovo) for a while now and decided to try and install Ubuntu so I can dual-boot Windows and Ubuntu. So today I installed Ubuntu 14 on a separate partition ...
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0answers
14 views

Dual boot - fails to boot to Windows 7 from new HDD

Recently I installed Ubuntu 14.04 to a new HDD. In the old HDD, I already had a dual-boot configuration of Ubuntu 14.04 and Windows 7. Due to some problems during the installation of Ubuntu, I ...
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1answer
2k views

Install Grub2 (with EFI-IA32 support) to the ESP partition from within Windows 8.1 (32-bit) - Bay Trail tablet

This is a very complicated idea, and it's been stuck in my head for a while now, so bear with me. In this question, when I say "Grub2", I am referring to the "EFI-IA32 version". The device I will be ...
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1answer
43 views

Windows cannot start booting

Yesterday I downloaded Windows 10 .iso file from DreamSpark. I installed it and I noticed my laptop cannot start windows booting. It gets stuck in the reboot loop. My BIOS loads then I get black ...
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4answers
34k views

What is hd0 and sda/sdb in Linux?

I'm completely new to Linux, and am using Ubuntu 10.04. I'm confused when to use what (hdx,y) to represent which hard drive. I have 2 hard drives, the first one is identified as /dev/sda (in Disk ...
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2answers
2k views

Grub 2 Password Protection in debian?

I do as the following run grub-mkpasswd-pbkdf2 to get a string nano /boot/grub/grub.cfg add two lines set superusers="putyourusernamehere" password putyourusernamehere grub.pbkdf2 ...