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

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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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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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How to dual boot PC-BSD 10.3 (with zfs file system) and debian 7 (crunchbang) using grub2 boot loader in MBR?

I want to dual boot PC-BSD 10.3 with ZFS as the root file system (the only file system) with Debian 7 (crunchbang linux) with ext4 using grub2 boot loader installed in MBR and grub is managed by the ...
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50 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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2k views

Grub2 unable to boot encrypted root

I'm using ArchLinux, I followed their tutorial on encrypting your root filesystem: https://wiki.archlinux.org/index.php/Using_DM-Crypt But I cannot get grub to boot the encrypted partition. My ...
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1answer
20 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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1answer
31 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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27 views

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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1answer
19 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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11 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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641 views

Debian install fails on USB-HDD

After my internal HDD broke in my laptop, I've tried to install Debian 6.0.6 on my external HDD. Please note that everything runs great when installing Ubuntu, but for some reason while the Grub stage ...
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8 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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40 views

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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2answers
360 views

What is `$menuentry_id_option` in grub?

I was fiddling with my GRUB 2 config files (/boot/grub/grub.cfg) and I noticed that the menuentry line for the automatically added Ubuntu boot looks like this: menuentry 'Ubuntu 14.04 Trusty Tahr (on ...
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Grub 2 os prober for windows 8

I try to use dual boot with fedora 20 and windows 8. I install first windows and then fedora. And grub dedectet automatic my windows. So the default \etc\grub.d\30_os-prober for windows is this: ...
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3answers
77 views

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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28 views

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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1k views

How can I boot the PC-BSD live DVD-ISO IMAGE directly via GRUB2?

Via the loopback command, GRUB2 allows to directly boot an ISO file. Now, I've configured the according menuentry to boot the PC-BSD Live DVD ISO, but when I try to boot it, the FreeBSD bootstrap ...
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9 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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3answers
1k views

Fedora 22 on MacBook Pro (Retina, 15-inch, Mid 2015)

I recently installed Fedora 22 on my new MacBook Pro. Good news: Wi-Fi works out of the box, so you can update the system immediately to resolve the faulty video driver issue (under bad news). ...
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3answers
11k views

How to install Kali linux on to a specific (existing) partition on a USB stick

I'm endeavoring to put Kali linux onto a USB stick - I know it's already written up, but I'd like to use only a portion of the total space (the aforementioned link will use the entire drive space). ...
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22 views

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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30 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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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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1answer
543 views

GRUB error Fedora 15 when Dual Booting on MacBook Pro

I am having trouble getting Fedora 15 running on my MacBook Pro. I had Fedora 15 installed before on this MBP before, so I know it works. I basically followed the good old instructions of Create a ...
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1answer
626 views

Builiding a UEFI bootable USB

I'm having a really hard time getting Mint13 installed on my new laptop, no optical UEFI support and having odd corruption of grub.cfg when I do try and use unetbootin. Is there a method to build a ...
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Dual booting Ubuntu and Windows 8. w8 boots through grub shell, but not from menu

I have a laptop, with installations of Ubuntu 12.10, and Windows 8. Windows 8 was first installed on the system, and Ubuntu was installed afterwards. During the Ubuntu installation, the installer ...
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3answers
16k views

GRUB-EFI installation fails while installing Kali Linux in external hard disk

I was trying to install Kali Linux from a live USB to an 1TB external hard disk. At first I was unable to boot the live USB with my H2O Insyde BIOS. Then I converted my pen drive partition table to ...
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1answer
273 views

Grub - boot debian iso file from ntfs partition and install it

I have problem installing debian directly from hard drive. Say, i have a logical partition /dev/sda5 and there is debian DVD iso file located in (hd0,5)/iso/debian-8.0.0-amd64-DVD-1.iso with initrd ...
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1answer
188 views

How do I repair grub2 (not) booting 32-bit EFI on a 64-bit machine?

I have an Asus EeeBook X205TA which proves very difficult to install Linux on due to obscure new hardware and 32-bit EFI on 64-bit hardware. I have seen and read a lot of material and I am almost ...
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4answers
3k views

Add FreeBSD to GRUB2 boot menu

I have Gentoo x64 installed with Grub2 on my MBR drive. Today I installed FreeBSD x64 9.2. Now I'm in Gentoo and trying to add FreeBSD to grub2 menu list. grub2-install /dev/sda os-prober ...
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651 views

Grub2 keyboard layout when decrypting partition

According to the OpenSUSE 12.3 documentation the only keyboard layout which can be used during a Grub2 boot is the "US keyboard layout". Is there really no way to change the keyboard layout used when ...
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1answer
891 views

Can't get grub to boot windows 7 partition. “error: invalid EFI file path”

I have an "HP pavilion 7008tx dv7" laptop. It came bundled with Windows 7 and has two 1TB HHD and an 32G SSD. Here is the output form "sudo parted -l": Model: ATA TOSHIBA MQ01ABD1 (scsi) Disk ...
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1answer
57 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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1answer
80 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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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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1answer
673 views

Incorrect step with grub while installing onto a USB stick?

I tried installing debian on a USB stick. I believed I made a mistake with the grub boot up part. I want to leave my harddrives alone and with my bios choose to boot up from a stick. Do I need grub if ...
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1answer
630 views

How to boot kali from native usb

Last night I made a kali linux usb. Now this isn't the live usb I literally installed kali on the drive. I did this from my desktop which meant naturally I had to install the grub for my boot loader. ...
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2answers
7k views

Windows boot option is missing after installing CentOS 7, how can I get it back?

I recently installed CentOS 7 on a machine that has been running Windows 7. I did a dual boot installation and installed CentOS in a partition. But when I boot up my machine, it only gives me two ...
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1answer
1k views

efivars data missing from procfs and sysfs

I'm trying to install ubuntu on a Tab-X 10.1 Intel WinPad. The UEFI loader only allows booting from 32 bit efi images. Ubuntu only supports UEFI in 64 bit versions. I'm trying to get the 64 bit ...
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5k views

stuck at grub rescue on boot, no bios, no live cd, ls returns hd0

I have an external hard drive with elementary os on it, and when I took it out my preinstalled windows 8 laptop, it came up with the "error: no such device:'hex number' grub rescue>". I can't boot ...
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1answer
882 views

Why do I need GRUB_DISABLE_LINUX_UUID=true

I just switched from lilo to grub2 and my first attempt failed with kernel panic - not syncing vfs unable to mount root fs on unknown block(0 0). It turned out that the problem was that the root ...
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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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GRUB no longer can boot the machine (different error messages)

When I boot from GRUB, I get various error messages from GRUB, apparently at random : "invalid arch independent ELF magic" or "incompatible license" or "file not found". I can boot from the rescue DVD ...
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1answer
56 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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1answer
536 views

Grub2 lost in new Linux distro install

So, I really need some help. Recently I was using a dual boot machine on the same hard drive. I had Windows 8.1 and Ubuntu GNOME 14.04. When I installed Ubuntu on top of my Windows install, I didn't ...
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1answer
531 views

Can't boot properly after moving all files off then back on my VM drive

I have created an Ubuntu 12.04 32-bit VM in VirtualBox with a .vdi disk. I then mount this disk with qemu-nbd and move all the files off it; then back onto it. When I boot the VM again I get varying ...
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2answers
4k views

Dual booting Debian and Windows 8?

My problem is a little weird (maybe to me only). Specification: Lenovo, Ideapad Z510. i7 intel core. 1920x1080. ISO: GNOME Debian 7.2.0 amd64. Bootable Device: Universal USB Installer. ---Process ...
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599 views

Unable to boot Windows without USB in

I recently attempted to install ubuntu 14.04 on a USB flash drive so I can use it on the go. I burned the ISO to a CD and booted it by doing try Ubuntu without installing, and then I clicked install ...
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1k views

How do I restore grub on a uefi boot after a windows update wiped it?

Until yesterday I had a dual boot debian / win8 with grub that worked like a charm. Yesterday a stupid windows update totally wiped grub and I'm now unable to boot in linux. I installed linux a year ...