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

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Problems with secondary hdd in grub

I had some problems installing Linux mint and or any other Linux distribution in combination with Windows. When I booted my machine it would hang before the grub bootloader showed up. Now i have some ...
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2answers
2k 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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61 views

Why does grub2-install escape chroot jail?

I have an odd experience. Scenario: I am writing a Linux installer (based on OpenSUSE 12.2) that runs in an initrd (actually initramfs), and I'm trying to update the bootloader. A copy of the ...
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1answer
26 views

Different linux OS on particular hdd

Have Adaptec RAID controller. There're 4 hdds on it. Existed Centos 5.10 on: /dev/sda1 - /boot ext3 /dev/sda2 - LVM I decided to migrate to Centos 7 and installed It on: /dev/sdd1 - /boot XFS ...
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1answer
873 views

Grub returns File not found when booting on a new disk with Debian Jessie

I installed Debian Jessie on a new hard disk, and wanted to boot from this new disk. At the end of Debian setup, I choosed setup Grub also. But when booting, Grub falls into rescue mode with a File ...
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2answers
215 views

Grub-install: what's the root directory

Can anyone provide a clear explanation what the root directory is for grub-install and when to use it?
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167 views

grub-mkconfig generates duplicate entries for an Ubuntu/Gentoo dual boot setup

I'm currently running Ubuntu (Xubuntu, specifically) as the primary OS on one of my systems. I've been building up a Gentoo installation on a new logical volume on the same system and I'm at the point ...
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1answer
155 views

How do I find/change where GRUB 2 gets installed on a rewrite, on Debian Wheezy?

I have a Debian Wheezy system. On a recent upgrade, I got an error message from GRUB telling me that embedding was not supported for ext2 file systems (huh? Never seen that one before.) and after a ...
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287 views

Dynamic Grub2 configuration via http

This may be a long shot, but I'm wondering if it's possible to load a configfile from an embedded config with grub via http. Something like: insmod net insmod http set net_default_server=${http_ip} ...
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1answer
8k views

Ubuntu 14 server edition, how to boot into single-user mode?

I'm new in Linux and just have basic knowledge about it. In the past I've tested to boot into single-user mode in some Linux distribution by just append " single" to the boot command. However, I don't ...
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1answer
2k views

Required GRUB modules for booting on mdadm RAID1

I have a mdadm-managed RAID1 with a single EXT4 partition on it (having both the OS files and GRUB's files in /boot/grub), and I'd like to know what modules and what configuration do I need for GRUB ...
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185 views

In Elemenary os, grub wont load anything but itself

I am running Elementary OS Freya as the only currently installed OS on my laptop, I have tried to install various operating system via USB and UNetbootin, however my grub for some reason just will not ...
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1answer
660 views

What's the difference between `grubx64.efi`and `gcdx64.efi`

CentOS7 package grub2-efi provides two files that are very similar. -rwxr-xr-x 1 root root 1070976 Mar 26 09:27 ./boot/efi/EFI/centos/gcdx64.efi -rwxr-xr-x 1 root root 1070976 Mar 26 09:27 ...
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3answers
823 views

Check installed grub2 modules

I run CentOS 7. Is there a way (e.g., a command) to check which grub2 modules are currently installed?
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1answer
507 views

GParted Live on Hard Disk with Ubuntu

Edit Please note that I fixed the original problem of not booting, but I still can't get it to run X-windows after being prompted for language, input, and display resolution. Original question I read ...
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1answer
2k views

Problems in using GRUB2 - Manjaro

I hope you are well! I use Manjaro x64_86, using GRUB2 and EFI. I made a large error after coming home from a night shift. I accidentally removed my boot partition when attempting to format an ...
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1answer
185 views

Convert Grub2 entry to Syslinux

I have been trying to do it for hours now, but so far I was unable to. I have a USB stick with grub4dos on sda1 (vfat), /boot syslinux on sda3 (ext2) and root on sda2 (btrfs). ext2 with syslinux is ...
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323 views

Grub is unable to find physical volume with Windows 7, in dual boot with Archlinux. LDM problem?

When I boot my system I get into the nice menu with Arch-linux, its settings and windows vista (loader) as possibilities. Windows fails to boot when selected with a message identical to the output of ...
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100 views

Grub2 don't see my second HDD

When the new distro is installed it makes grub2 boot menu, but it does not consider my second HDD where I have Windows7. So I tried to edit grubs cfg file but with no success. Also tried to insert ...
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1answer
203 views

How to install a Linux system without affecting previous GRUB?

I have a Linux system for current use and a few other partitions to test different other distros. But the way I install these systems, which is always the same, leads to the GRUB boot list being ...
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1answer
871 views

Unable to boot after installing grub for new Arch Linux Install on Acer S7

I have followed the instructions on the Arch Linux beginner's guide to do a dual boot on an Acer S7-392. I only did not do the initramfs part and I did not create the partitions at the install since I ...
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18 views

dracut md5sum boot directory

This has been going on for a few months now, but my initramfs (and kernel) for that matter have been placed in /boot/{some hash}/{kernel version}/{initramfs,linux}. Did dracut or some other module ...
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256 views

How to stop grub from messing with my EFI partition?

I'm dual booting Windows 8.1 and Linux Mint. I decided to install the Linux Mint OS (Rebecca) onto an EXTERNAL HDD. So what I did was click "Something Else" during installation and I created 3 ...
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3answers
4k views

After reinstalling Linux Mint, Windows 7 does not boot

Final edit: I tried each and every single fix on the question, but I ended up just restoring an image I made a year ago of the freshly installed system using clonezilla. After that, I ran rescatux to ...
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1answer
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Can't boot to Kali Linux [duplicate]

I have installed the operating system successfully on my laptop that has Windows 8.1 pre-installed. (With this guide) After restarting the computer, Windows 8.1 loaded instead of grub bootloader, so ...
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1answer
3k views

Kali linux black screen after booting

I've managed to install kali linux from USB but after I try to boot it I get only black screen (after GRUB). It works great when I run only live sesion from USB. I am using MSI GS70 2PE notebook which ...
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187 views

grub2 lvm2 raid1 /boot

Is it possible to boot from a system where /boot is located within an lvm2 raid1 partition. I've tried a variety of configurations, but I have yet to discover how to do it. I am using two 2TB disks. ...
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1answer
68 views

How to restore RAID5 Array

I have a RAID5 array consisting of 3 identical 2TB drives. Suddenly GRUB wouldn't boot anymore and gave the error out of disk. Eventually booted a livecd and ran some mdadm commands: mdadm --examine ...
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0answers
61 views

can I use vmlinux instead of vmlinuz with GRUB2 (Fedora)?

Can I use vmlinux instead of vmlinuz with GRUB2 (Fedora)? I've seen this: Can vmlinux be used instead of uImage? but it speaks of U-Boot, not GRUB2.
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86 views

Configure where GRUB2 environment block is located

I have Arch, Ubuntu, and GRUB2 installed on a BTRFS filesystem. I'm aware that GRUB cannot write to BTRFS for a variety of good reasons, and therefore cannot save environment variables to ...
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109 views

Ubuntu Grub recognises MacOS but cannot boot up

I tried a little experiment on installing MacOS on a non Mac Hardware Laptop... Got this far as to put the MacOS Install ISO on to an HFS+ partition but the machine needs to boot this up for the ...
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1answer
514 views

Where isoboot, boot=isolinux iso-scan/filename parameters are documented?

I see example (in dracut docs) linux (loop)/isolinux/vmlinuz0 boot=isolinux iso-scan/filename=$isofile root=live:LABEL=$isolabel ro rd.live.image these texts: ...
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2answers
762 views

Installing other Linux in an encrypted disk

I recently got an SSD to replace my laptop's HDD and decided to change and use "full disk" encryption. I created a small unencrypted partition for /boot and an big encrypted LUKS partition where I ...
2
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1answer
882 views

Grub with retina displays (high resolution)

I currently use Ubuntu on my macbook pro with grub. My macbook has a retina display with 2560x1600 resolution. The grub startup screen font is so tiny that it is barely readable. How can I make grub ...
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1answer
606 views

Gentoo: grub2 with efi [Solved]

I have a strange problem about loading with grub2 and efi on gentoo. Maybe I've missed something, but I'm trying to do this: # mkdir /media/gentoo # mount /dev/sda8 /media/gentoo/ # mount -t proc ...
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0answers
101 views

Problem dual booting windows 8 and ubuntu 14.04

I had windows 8 for like 12 months Yesterday I choose to install ubuntu 14.04. On windows 8 I had 2 partitions C(where windows was installed) and D(other ntfs partition). I shrunk D with 50 GB then I ...
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2answers
8k views

Multiple boot: Windows-10 along Linux?

On a computer running for the long term Linux Mint 17 Xfce (ubuntu 14.04) along Windows 7 I have created another two separate partitions with the purpose of installing for the short term other systems ...
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1answer
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Can Grub2 multi-boot LUKS/LVM distros with only one boot partition?

There are many tutorials on the internet for multi-booting unencrypted distros using a single boot partition and chainloading. For example, booting 145 OSes. Likewise, there are tutorials for ...
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1answer
226 views

Initialise USB devices before hard disks during grub2 boot

I have a CentOS installation on a portable USB stick, with a grub2 installation on it's first partition. The system can boot when there are no internal hard drives plugged into a machine, but fails if ...
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2answers
4k views

Windows 8.1 not showing up in GRUB bootloader after installing Linux Mint 17.1 on partition

my system drives are based on these hardware parts 1: SSD 250 GB 2: HDD 1TB 3: External HDD 2TB I use my SSD for Windows 8.1 and all other related stuff, like, installing software etc. The HDD is ...
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1answer
843 views

How to generate grub.cfg for different disk?

I have 2 disks: 1-st disk contains base operating system (/dev/sda with many partitions and OSes) 2-nd disc should be setup (/dev/sdb1=/boot,/dev/sdb2=/) I have grub2 package installed in the base ...
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1answer
636 views

How to change grub black screen

I'm using dual boot Linux Mint 17.1 Cinnamon and Windows XP. So I want change grub2 black screen and I've tried to install gfxmenu theme for grub but it is not working; I see it's not installed in ...
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1answer
49 views

How can I generate two Grub2 entries for each kernel?

Due to bugs in my laptop's BIOS (or some such thing), I use the boot flag nox2apic when I know I need to attach an external monitor. However, when this flag is enabled, pressing some multimedia ...
2
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1answer
427 views

how /etc/grub.d/41_custom is supposed to work?

I am asking, because fragment of file /boot/grub/grub.cfg looks like ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif ...
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Is it possible to use “submenu” command in grub2 embedded config?

I want to enumerate all partitions of my hard drive, and include /boot/grub/grub.cfg file from each partition as a submenu. And I want to do this in embedded config file. This way all partitions will ...
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1answer
417 views

Kali Linux Live (Try before installation) won't install GRUB or LILO

I want to install Kali Linux but the original installation makes my PC hot. I use cpufreq-selector -f 1000000 to cool down my PC, but when I use the live option, GRUB or LILO won't install. Do I have ...
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3answers
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Need to reinstall GRUB2, but it requires me to boot into unbootable system!

I had Window 8 and Linux Mint. Mint broke and I installed Antergos. Now I lost GRUB completely and I have to use Windows Boot Manager to boot into Windows. So I used Boot Repair CD to try to fix that, ...
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2answers
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Is my server still using a grub-legacy (GRUB 1) MBR?

When Debian updated to GRUB 2 (package grub-pc), it didn't automatically upgrade the MBR. Instead it configured the old GRUB 1 installation so that it will chainload GRUB 2; that way administrators ...
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1answer
555 views

Start server after stuck at GRUB

I currently have Ubuntu Server 14.04 and sometimes when I reboot it gets stuck on grub selection without countdown. It is the same problem as here, but I want to fix it remotely because I am not home ...
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1answer
2k views

Fix grub v2 bootloader configuration on running debian

We have a server running Debian Wheezy. It is connected to a UPS, that's why it basically never went down for years and we never noticed that the grub v2 bootloader could not load the correct kernel ...