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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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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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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52 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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46 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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70 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 I'...
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48 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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66 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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37 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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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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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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89 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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47 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
85 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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4 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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38 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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22 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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105 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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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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26 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
60 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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210 views

How to fix Windows 10 bootloader installed on different disk?

I have a computer with two hard drives - the first one running Ubuntu 15.04, the second one running Windows 8.1. GRUB is installed on the first one for dual-booting. Recently, I've bought a new disk ...
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1answer
78 views

Installing Debian but can't boot

I'm installing Debian testing on a SSD, there is a pre-existing EFI ESP partition from windows installation, the disk uses GPT partitioning. Problem is after it finishes installing it won't boot linux ...
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29 views

Can't boot Debian after forced EFI installation

I just installed Debian with encrypted /. I made a /boot partition and converted an NTFS partition to EFI. It installed but now I can't boot on Linux. My motherboard boot list put a mirrored "N" sign ...
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How to restore grub boot on a /boot partition after windows 10 booting restoration

I just installed Debian testing but it didn't put Windows 10 into grub booting options so I restored Windows 10 boot with this tutorial http://www.qliktips.com/2012/11/fix-windows-8-boot-issue.html ...
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55 views

Dual boot windows 10 debian on SSD 950 pro

Hi I got an 950 pro SSD and had windows 10 installed on a partition on it. It was booting fine, then I installed debian testing on an another partition that I encrypted during installation on that ...
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112 views

Debian: grub-install with LVM, crypto, and stripe

I'm working on getting Debian 8.2 installed on my system, and am having trouble with grub. It looks like the OS installs fine, but once I get to the first boot, I just sit at a grub prompt. Here's ...
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29 views

How to configure btrfs raid1 to be bootable again

Setting up my home server with two 1TB devices (btrfs, raid1) two years ago, I recently added two new 4TB devices to my btrfs-volume. After removing the 1TB devices btrfs device delete ..., my server ...
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165 views

Install bootloader for Windows 10 after Ubuntu installation

I installed Ubuntu on an external drive following a tutorial and the tutorial said that I had to install the bootloader into the external drive. After the installation finished I could boot to Ubuntu ...
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66 views

Manual GRUB installation on USB: Filesystem is unknown

I'm trying to manually install GRUB on my USB pendrive. I do the following steps: I check whether the partition table is correct: sudo fdisk -l I get the following output: ... Disk /dev/sdb: 2 ...
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17 views

grub can't boot windows correctly

I have my Laptop (Thinkpad Edge e540) configure to dual-boot Windows 8.1 and Ubuntu15.10. When I installed Ubuntu I selected /dev/sda1 for bootloader installation and made a separate partition for ...
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85 views

Grub is in unusable state since w10 update

I am on a Vaio laptop with Debian Jessie / W10 dual boot and Grub 2.02~beta2-22+deb8u1. Since W10's latest update something weird happened to my grub-efi. When I boot my computer I get this error ...
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2answers
106 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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77 views

How do I fix my MBR after removing dual-boot OS?

I have a PC which I cannot boot into anymore. I really really don't want to re-install the OS on it (I don't want to lose the data and, besides, it's Christmas week...) OK, so the PC has an SSD which ...
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292 views

No GRUB boot menu after installing Kali Linux on another drive for dual boot

I have a ASUS X551MA. I have 444 GB of storage space. I partitioned it so that I had 346 GB for my Windows OS and approximately 100 for my Kali Linux dual boot. I entered my BIOS by pressing F2 and ...
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55 views

PC boots into GRUB rescue/ Live Cds will not start

Ok, so this is kind of two issues at once. So, I was thinking about reinstalling Windows alongside my Linux install. I was in the recovery partition, but I changed my mind and hit cancel. When I did, ...
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68 views

How to restore Windows 10 from grub rescue?

My Pc has Ubuntu and Windows 10 (initially was 7 , upgraded to 10) It has entered rescue mode. I want my windows 10 back. And I have my important work in that. I don't bother loosing my Ubuntu. I ...
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34 views

Re-installing MBR (Master Boot Record) on Windows 7

I have GRUB installed on MBR for dual booting with GNU/Linux. However, now I want to delete my linux partition, and go back to using Windows 7 MBR. How do I re-install MBR while logged on Windows 7, ...
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1k views

Windows 10 and Linux Mint 17.3 dualboot breaking

So I fixed my previous question by getting a valid UEFI installer disk and completely formatting my SSD. I installed Windows 10 on half of it and installed Linux Mint 17.3 afterwards following this ...
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28 views

How to (safely) install Windows 10 on a Linux system

I have Linux (Arch) only system with a spare partition that I'd like to use for Windows 10. It's a notebook with UEFI. I remember I had some trouble back then when installing Arch because of UEFI. I ...
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288 views

“Reboot: power down” issues in Debian Jessie

So, the shortish version: My system will no longer power down after I issue a shutdown command (either from within KDE or on the command line, or it would seem Windows), I see the line "Reboot: power ...
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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 04/...
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27 views

Booting Linux from pendrive very slow

I installed the newer Debian Jessie to my pen drive using VMWare Workstation. When used with VMware the Os works fine and fast. But when I try to boot my laptop using the pen drive, it takes 20 ...
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108 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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22 views

Ubuntu and Win 8.1 DualBoot with default Windows booting

I am a proud owner of Asus ux32ln with 128GB SSD drive. I want to install Ubuntu as my secondary system (work, studies and stuff). So what I want to achieve is to install Ubuntu that way that windows ...
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37 views

grub fails to find btrfs-filesystem after adding new devices

Having my server (Ubuntu 15.04) equipped with two 1TB HDDs in raid1, I added yesterday two new 4TB HDDs. After adding those with btrfs device add ... I rebalanced the system with btrfs balance ...
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90 views

How do I migrate Windows 10 and Grub to a new Hard Drive?

I have two drives: C:, which contains a Grub bootloader and Windows 10, and D: which contains an NTFS partition and also all my Ubuntu partitions. I would like to replace my C: drive with a new (...
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142 views

Arch - GRUB with dm-crypt LUKS on LVM

The last time I had to install Arch was a year or so ago. Grub always gives me the most trouble but I prefer it over syslinux. HOW CAN I GET GRUB TO RECOGNIZE MY ENCRYPTED VOLUME? I get the GRUB ...
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2answers
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GRUB boot error rescue

Recently created a Linux/windows 10 dual boot and something went wrong.... every time i boot up my PC it brings me straight to GRUB rescue and i am unable to type or access the BIOS menu (i have tried ...
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36 views

Shift key doesn't work for GRUB boot loader

I have absolutely no idea on how to get to the GRUB loader. I have an iMac with Ubuntu single-installed(if that affects anything). I tried using shift and right-shift on bootup, and I get an infinite ...
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1k views

Windows 10 ISO in Grub2 Multiboot

I'm attempting to create a multipurpose AIO USB stick for everyday use. So far I've been able to get Mint, Tails, And Hiren's boot cd all successfully working off of one device similar to the tutorial ...