GRUB2 is the second revision of the GRand Unified Bootloader, with versions numbered 1.9x and 2.yz.

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Permanently modify boot menu on another drive (Solaris 11.2)

I'm running Solaris 11.2 on a HP Proliant Microserver Gen8. Because of a limited number of hard drive slots, I have installed a SSD in the optical drive bay. Unfortunately, this SATA slot is not ...
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Cannot boot into Linux off live USB

I am trying to dual boot Linux on my laptop (Dell XPS 15) which is running Windows 10 Pro. I did not have any problem dual booting the two operating systems on my desktop. I cannot boot up ANY Linux ...
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1answer
13 views

Why is debug_putstr() not being printed during boot?

I'm asking myself why debug_putstr() in arch/x86/boot/compressed/misc.c is not being printed during x86 boot phase, though it is configured to do so with GRUB_CMDLINE_LINUX_DEFAULT="". On other ...
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I just installed Arch with grub2. When I boot it doesn't launch grub

I am just dual-booted my computer with Windows 8.1 and Arch. I have windows on a 120GB SSD and arch is on a 2TB HDD with ~half partitioned for windows storage space and the other half partitioned for ...
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1answer
16 views

Grub config separate root and boot partitions

I've been reading many articles about Grub with LOTS of examples for configuration. Exactly 0 contain configuration for a separate root and boot partition on LVM. This is my configuration: menuentry ...
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7 views

Grub2 fails to load on an AMD cpu

I have built a linux image with GRUB2 as its boot loader and written it on an IDE hard disk. When I put it in a computer with Intel cpu, it works fine. But putting it in an AMD cpu computer, it even ...
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1answer
22 views

GRUB rescue mode - where does it live?

My understanding is that when I install GRUB, a primary OS loader gets written to the MBR and a secondary OS loader (the bulk of GRUB) gets written to some other partition. In normal operation, the ...
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GRUB doesn't find /boot in LVM

My system was installed with the Antergos installer and it runs encrypted GRUB. This works fine, just have to insert decryption key twice. Then I added LVM and created three LVM volumes, boot root ...
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How to apply grub theme to a live usb?

This is my setup, I Have installed grub on the usb using grub-install command in the /boot directory. I copied 3 iso's on the usb Manually created a grub.cfg file to boot into the iso's. So I want ...
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19 views

What are the steps to migrate from GRUB to GRUB2?

I have a fresh installation of Scientific Linux6/RHEL6/CentOS6: I have /boot with boot loader and / with all else (which are sda1 and sda2 partitions of one hard drive, on a fresh, real system). I ...
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10 views

How to downgrade Grub legacy in a linux image

I have a 1 Gbyte image of installed debian 7 which I have made it myself by copying all the needed file to it. There is only one partition in it named hda0. I have mounted it to loop0p1. I had ...
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1answer
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How to make a UEFI bootable ISO image with grub-mkrescue?

The story so far: I have been following this guide to produce a customized version of Ubuntu. As of now, the structure of the CD is complete. I have generated an ISO with the command: sudo ...
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1answer
88 views

GRUB unable to detect Windows 10 using Boot-Repair

I have been using Windows 8.1 and Kali Linux 3.14 for a while. But upgrading to Windows 10 resulted in installation of MBR instead of GRUB. As I usually do, I used the Boot-Repair Bootable USB to ...
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1answer
47 views

Freshly installed elementary OS Freya missing on boot menu

In my laptop right now I have two operating systems: Windows 8 and Ubuntu. I also had a third one I installed in the past but never used it: elementary OS Luna. I saw elementary OS finally released a ...
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1answer
20 views

install grub but no booting

I'm having trouble installing grub. I used to have a UEFI boot setup but it constantly failed so I decided to use normal boot instead. Unfortunately, the system doesnt boot into grub. What I did ...
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14 views

Need Help to locate the GRUB FILE..!

I know this question has been discussed multiple times but my solution is no where in any one of those. So my apologies for writing such a post again but i am really out of my wits. My system is ...
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33 views

UEFI with Windows and Ubuntu dual boot Grub fail

UEFI with Windows and Ubuntu dual boot Grub fail when boot and show a minimal bash but UEFI detect Ubuntu only Grub can not load system.
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2answers
37 views

Installing Linux distros on two seperate hard drives

I am wanting to dual-boot Ubuntu 14.04.2 LTS and Linux Mint 17.2. I have a custom built PC, that I built with 2 hard drives (500 GB w/ Ubuntu 14.04 and a 250 GB that will have Linux Mint on it) and ...
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51 views

Making a multiboot grub usb with debian jessie live

I'd like to put grub on my flashdrive, and be able to boot a live debian image from there. I got grub onto the flashdrive fine, I see my debian menuentry there, but I get a kernel panic when I try to ...
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34 views

Installing a bootloader on a mac

Due to a somewhat odd requirement for a particular linux installation, with a particular software suite, I found it best to use ddrescue to populate the harddrive with the partitions and their data. ...
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1answer
32 views

How to safely delete a system partition?

I got the following disk sda9 contains a new Linux installation which I'd like to keep, while sda5 is the old installation which I'd like to free (and successively merge with sda4, but we don't ...
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43 views

Grub reboots PC after showing only “Grub loading.”

I have this old computer I use for the more experimental OSes, and about a month ago I installed Gentoo on it, with GRUB2 as boot loader. Everything worked fine, but every boot it would show an error ...
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77 views

Which boot loader is commonly used on Linux distributions and why?

I have been using Ubuntu on my local machine and occasionally running Debian and other Linux distributions for experience. Until recently I thought Grub2 is far common, but that was misleading. While ...
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1answer
34 views

SSD failiure. grub rescue sees files, but I can't mount drives

I have a 2 year old SSD that apparently has died. 2 out of the 3 partitions are completely unmountable (only EFI boot partition mountable). When i turn on my computer I am greeted with grub rescue ...
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128 views

Permanent grub 2 configuration on debian 8 “jessie” installation on Asus X205TA

I am attempting to run Debian Jessie on an Asus X205TA. I do not have access to internet. I am having difficulty creating additional install media (separate issue). My configuration is as follows: ...
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grub2: error: /vmlinuz-3.16-ucs109-amd64.efi.signed has invalid signature

I am using a derivative of Debian, called Univention Corporate Server. It's a nice appliance that I use for my home server. Yesterday I upgraded to the newest version and since then my server does not ...
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28 views

How to get the values for “set root” in menuentry while setting password for GRUB2 on CentOS 7

I need to disable single user mode on my servers running CentOS 7. I read the RedHat documentation on what goes to /etc/grub.d/40_custom and how to encrypt the password and all but one details makes ...
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27 views

Boot managers found by os-prober not shown at boot

I've recently made the move from Ubuntu to Arch Linux and could use some help configuring GRUB. When I run grub-mkconfig -o /boot/efi/EFI/GRUB/grub.cfg as per the instructions on the Arch Wiki, the ...
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Is there a different file location for grub2 configuration files on a UEFI system?

One of our old scripts looks in two separate places for the grub.conf file: one "default" and one for UEFI if [ -f /boot/grub/grub.conf ] ; then GRUB_CONF_FILE=/boot/grub/grub.conf elif [ ...
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35 views

Failed to start user service: unknown unit: user@0.service after grub launch

First I have to let you know that I got absolutely no knowledge about linux and need help and explaination like Im 3. So, Im on holidays and I have no live cd with me. I tried to install crome and ...
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1answer
33 views

Booting off raid'ed > 2GB drives, btrfs, handling bios boot partition [duplicate]

Setting up an array of (3) 5GB drives using btrfs. It will soon grow to (6) 5GB drives. Starting with raid 1, will rebalance once all the drives are installed to either raid5, 6, or 10. I will be ...
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Which ISO file, vmlinuz and initrd.gz to use for installing CentOS from Multiboot USB?

I have created a multiboot bootable USB with GRUB and used it to install Debian 8.1 successfully. A multiboot USB is one that contains the ISO images of multiple operating systems, with GRUB being ...
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GRUB: how to change default disk for future OS updates?

I'm running Debian testing on a computer with 2 disks: /dev/sda: /dev/sda1 - data disk /dev/sdb: /dev/sdb1 - Linux Mint (no longer used) /dev/sdb2 - /home /dev/sdb3 - Debian testing (current ...
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Preinstalled windows 8.1 not booting after installing Linux mint 17.1

I have pre-installed windows 8.1 on my machine and its a uefi enabled machine. I installed linux mint 17.1 on this by the side of windows 8.1. As I was unaware about the approach to install linux ...
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1answer
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Problem with GRUB for dual-boot installation of LMDE 2 (and Windows) on encrypted luks-lvm (truecrypt)

I'm trying to install LMDE 2 'Betsy' 64-Bit dual-booting with Windows 8.1 and both systems encrypted separately, Windows with truecrypt and LMDE with luks. When booting I want to be asked for the ...
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36 views

Mount CD/DVD in GRUB

How to access CD's content in GRUB, when booted from HDD? This is what I would like to do: title Boot from CD with modified parameters root (cd) kernel /live/vmlinuz <my ...
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1answer
61 views

Grub 2 multi image boot disk boots some images but restarts on others

The issue I'm having is that my bootable usb I have only works with certain boot images, to be more specific it will boot Ubuntu desktop iso images but not Ubuntu server. If I try to boot Ubuntu ...
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1answer
136 views

Arch linux root device problem in '/dev/mapper/MyStorage-rootvol'

I installed Arch x86_64, these are the commands I used during the installation: # parted /dev/sda (parted) mklabel msdos (parted) mkpart primary ext2 2MiB 2GiB (parted) mkpart primary ext4 2GiB 100% ...
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1answer
67 views

Read the UUID of a known partition into a variable in GRUB

I'm already successfully booting the loop mounted arch installation iso (and couple of other isos) using grub on flashdrive. I have grub files in /boot/grub on the flash, iso files in /boot/iso (see ...
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68 views

Gentoo boots into grub2, “You need to load the kernel first”

I just finished my first Gentoo install and rebooted. I'm taken to GRUB2 and try to boot, it returns error: you need to load the kernel first I tried kernel /vmlinuz But it could not find ...
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24 views

Boot GRUB2 with Degraded RAID5

I am building a custom NAS with Debian Jessie. Has three 4TB hard drives in a software RAID5 configuration. Works perfectly when all three drives are present. I am trying to test what happens when if ...
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1answer
164 views

grub-install : File descriptor 3 leaked on vgs invocation

I installed Debian Jessie on a LVM in a software RAID 1. To make sure MBR are written on both disks of the RAID 1, I run dpkg-reconfigure grub-pc (as suggested here) and select both disks. I get ...
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23 views

Initramfs error installing Blackbuntu through Grub

I'm trying to install Blackbuntu through Grub. Once I click the ISO in grub it displays the Blackbuntu loading logo, but then I get this error: Initramfs error: unexpectedly disconnected from boot ...
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Dual boot Mageia5 using Windows XP bootloader

I used the following commands for dual booting Mageia 5 from Win XP bootloader grub2-mkimage --output=./core.img --format=i386-pc --prefix="(hd1,msdos5)/boot/grub2" biosdisk part_msdos ext2 cat ...
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Trying to boot Mint via ISO on Drive using a DVD

I use Mint on a Windows PC that I cannot install Grub on. I am trying to figure out how to boot an ISO on the root directory of the C drive (c:\mint.iso) on my Windows PC by running Grub off of the ...
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Advice Needed for Grub2 Rescue Prompt

When I boot my system, I receive the following Error Message on my screen: error: no such partition. Entering rescue mode... grub rescue> After seeing the error, I plugged in an external USB ...
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Grub Refuses New Kernel

so my Mint 17 hasn't been booting, and I tried reinstalling the kernel from a live USB drive. I followed the steps detailed in this guide to edit /etc/default/grub to accept the last saved kernel ...
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355 views

Recover from emergency mode on Centos 7

I have a Dell PowerEdge R420 which has installed Centos 7 and was working fine. One day I removed the disks that Centos 7 was installed (2 disks with RAID-1 layout) and I installed another clean disk ...
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1answer
77 views

restoring grub mint 17

I'm currently trying to get my Mint 17 partition booting again. I tried to fix a booting problem with boot-repair and a live USB, but upon inputting the command sudo chroot "/mnt/boot-sav/sda7" ...
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how to make GRUB find modules on multiboot Linux LiveUSB?

background (skip to header=problem if you're expert on LiveUSBs, ISOs, GRUB2, etc) I'm setting up a multiboot/multiISO Linux LiveUSB as detailed here, which I intend for use on multiple hosts (i.e., ...