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

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Grub not loading at boot

I just installed Fedora, I had just one partition before it was Windows 10. When I do grub2-mkconfig it reconize all my partitions including Windows, but at the boot grub is not loading I dont know ...
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394 views

Install Grub2 in UEFI

I have overridden the MBR from Windows 10 using EasyBCD and now I can't boot into any system. What I've tried So I've followed these instructions: ...
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1answer
289 views

How to correctly install GRUB on a soft RAID 1?

In my setup, I have two disks that are each formatted in the following way: (GPT) 1) 1MB BIOS_BOOT 2) 300MB LINUX_RAID 3) * LINUX_RAID The boot partitions are mapped in /dev/md0, ...
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30 views

GRUB> unknown filesystem… [closed]

unknown filesystem grub> set boot=(hd0,msdos6) Prefix ... insmod normal doesn't work = unknown filesystem normal doesn't work = unknown command sudo doesn't work = unknown command I had ...
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1answer
87 views

Moving /boot partition without messing up the system

I have deleted my old Linux Mint partition I had installed beside my new current Rafaela one. Thus, I have free space I want to add to my home partition. Above you can see the partition layout: sda4 ...
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90 views

Lenovo G50-70 grub 2 broken

Hello I bought a Lenovo G50-70 core i3 edition which came with pre-installed windows 8.1 and a partition for lenovo one hit recovery button.I tried installing Funtoo at the end of the installation ...
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54 views

Repair File System After changing the partition structure

I have dual booted linux centOs with windows. Now I changed the partition structure of linux with a partedMagic live CD. Since I have used the EasyBcd to make the boot menu on windows, I can still ...
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148 views

operating system not found Kali Linux (GRUB not loading)

I previously had kali linux along with windows 7. I removed both of them , keeping only a backup data on a partition. I reinstalled Kali Linux. Installation was correctly terminated. Now when the ...
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129 views

Arch won't boot into grub on HP Elitebook, but does everywhere else

So this is not my first time setting up arch on a system. But for some reason this here is not working. I have an HP Elitebook 2560p, I already had Fedora 22, Ubuntu, Centos and other Linux distros ...
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1answer
219 views

How to make grub-mkconfig work on a usb device?

AFAIK grub-mkconfig and grub-update/update-grub commands only run on the device that they are installed on. I want to run the commands on a usb drive, but I don't know how to install them on the ...
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0answers
89 views

NixOS not appearing in Grub (Sony Vaio E series)

As described here, the Vaio E series of laptops don't follow the UEFI standard, and simply load /EFI/Microsoft/Boot/bootmgfw.efi on startup. When I was running Linux Mint, this was a relatively easy ...
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1answer
115 views

grub2 create menu entry to skip the current disk os while booting

I created 2 partitions on my pendrive. The first partition is big one and I use it for general purpose file storage. The second partition is small one and I made debian-jessie install in this one. I ...
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1answer
153 views

Arch Linux: GRUB does not load after installation

I have installed windows 10 in my laptop in BIOS Legacy mode.I have 3 primary partitions including the Windows partition and have extended partition with 2 more logical partitions. Now for installing ...
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37 views

after extension of partition grub says unknown file system

I have a vServer with Debian Wheezy running, yesterday I wanted to extend the partition but after the reboot grub2 says error: unknow filesystem. Entergin rescue mode... grub rescue> Here I am in ...
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228 views

Rolling Grub2 back to Grub on Debian Jessie (8)

I'm trying to run 'grub-install /dev/sda', it stays stuck on 'Searching for GRUB installation directory ... found: /boot/grub' after leaving it for an hour, nothing happens. I have tried removing all ...
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2answers
2k views

Dualboot win10/Linux Mint boots directly into win10 - doesn't show grub

So I have a dual boot setup using Windows 10 and Linux Mint 17.2 but I can't boot into Mint normally because my laptop always boots into windows without showing grub. In order to boot into Mint I ...
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113 views

Where in GRUB2 source code is the handover/jump to kernel code?

I'm looking for the line of code where GRUB2 finally jumps to kernel code and thus hands over execution on x86 systems? I guess it's in an assembler file since this is very low architecture stuff. I ...
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218 views

Changes in grub customizer doesn't have any effect in Manjaro

I've just installed Manjaro Linux and wanted to customize the boot menu with grub customizer as I'm used to in Ubuntu. But if I save the changes and reboot the changes are not reflected in boot ...
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1answer
146 views

deleted linux Mint from Win 8.1 dual-boot and cannot reinstall linux now

Until yesterday I had a dual-boot of Windows 8.1 with linux Mint 17.2 Rafaella Cinnamon 64bit. Via the terminal I deleted something that I shouldn't and then when I rebooted the PC, linux stuck at ...
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0answers
155 views

Dual Boot Configuration with SSD and HDD

I'm very new to Linux. I have been using Windows/Mac during my whole life, but now I have decided to use Linux. So I'm trying to configure a dual boot system with Windows 10 and CentOS 7. I already ...
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0answers
850 views

root filesystem on nvme device

I have an Intel 750 nvme drive. Works fine. Well.. sort of. I would like to use this device as my root file system. I have no bios support for nvme devices. I have the nvme driver enabled in the ...
0
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1answer
47 views

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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0answers
245 views

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
32 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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1answer
73 views

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
322 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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36 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
38 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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0answers
157 views

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 ...
2
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1answer
162 views

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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56 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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67 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 files to it. There is only one partition in it named hda0. I have mounted it to loop0p1. I had ...
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1answer
258 views

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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2answers
883 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
1k views

Freshly installed elementary OS Freya missing on boot menu [closed]

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
35 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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78 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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94 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
132 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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1answer
376 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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84 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. ...
0
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1answer
51 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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1answer
226 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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145 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 GRUB 2 is far common, but that was misleading. ...
2
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1answer
101 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 ...
0
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1answer
703 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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236 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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64 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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203 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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1answer
92 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 [ ...