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

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Grub2 displaying 4 entries after CentOS7 update

I'm new to CentOS, but I'm familiar with general Linux command line. After installing CentOS, I ran "yum update" as root and now my grub displays 2 more entries: CentOS Linux (3.10.0-229.14.1.el7....
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123 views

Booting DragonFly BSD with GRUB2Win fails

After manually adding insmod part_dfly in GRUB.cfg, partition search by file does find loader. Then, rather than Dragonfly booting, only blank screen appears. GRUB has an elf.mod so the reason is ...
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1answer
155 views

Getting grub terminal after removing Ubuntu partition and unable to boot into Windows

I deleted my Ubuntu partition cause I wanted to install Linux mint. But now when I switch on my laptop, I'm unable to boot into Windows. I'm getting a grub terminal (not sure if it's grub rescue mode) ...
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4answers
532 views

How can let grub boot Kali directly instead of giving me a command line on boot?

I Installed Kali Linux 2.0 64bit (full version) using USB device in dual-boot with Windows 10, done without error if I remember well. My device is an Asus TP300LA (UEFI), enabled CSM in bios, and ...
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1answer
553 views

How to fix a very broken grub?

I have a very broken Fedora 22 install. Everything was working absolutely fine until I decided to dual boot F22 and Linux Mint MATE. I had Fedora installed on an SSD, and I installed LM on a ...
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1answer
27 views

How to set which GRUB loader to use after dual booting two Linux OSes?

After installing Kali and accidentally its Grub-loader, I want to change it to the previous one of my Ubuntu installation. The reason is that the Ubuntu grub-loader can Secure boot while Kali's does ...
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34 views

Why do Linux ISO's boot to grub?

I'm trying to re-install Debian 8 on my SSD after recently deleting my Debian 8 partitions, but it doesn't seem to boot like I'm used to. Instead, of the normal grub screen to begin installation, it ...
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1answer
772 views

GRUB not loading after installing OpenSuse TumbleWeed

Recently I decided to switch from Ubuntu to OpenSuse so normally I attained the TumbleWeed image from OpenSuse and began installing it. The installation process finished without any problem but after ...
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55 views

Different boot partitions for dual boot

I finally decided to manage partitions in my hard drive and install different OS's. I have used Ubuntu for a few years, and I'm fairly familiar with its installation. Now I want to try OpenSUSE, but I ...
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1answer
22 views

Live DVD hangs at GRUB2 on boot

I have a live Slackware 14.1 64-bit iso that hangs at "Welcome to Grub!". MD5 sums check out for the downloaded image. The computer in question has successfully booted live images of other operating ...
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1answer
25 views

Linux as 3rd boot OS

I would like to install another linux kali beside my linux mint and win10. My question is, do I need make 3 partition again for installation, /root /home and swap od I don't need swap because I ...
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720 views

Sign GRUB2 bootloader to enable UEFI secure boot

Following preliminaries: Linux 4.2.3-gentoo GRUB2 UEFI, Secure Boot off Now, I want to mess with the secure boot so I'm able to turn it on. More or less following this guide, I have: backed up ...
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1answer
45 views

grub-install fails when image is 64 meg and succeeds when image is 256 meg

In the two scenarios below the tst.sh script is exactly the same, except that dd creates a 64 meg image in the first case and a 256 meg image in the second case. (image size is defined by the count ...
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19 views

Linux Mint - Keep Grub2 on two independent HDD's

HDD partitions: sda1 efi/boot (grub 2.02 installed here) sda2 / sda3 swap sda4 home The above hard drive is installed internally with Linux Mint 17 as the OS. I have a 2nd external hard drive ...
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171 views

How to get the very first boot messages in high resolution

After upgrading to debian jessie I abandoned the proprietary nvidia drivers and switched to nouveau. I am using grub2 to boot. Kernel is 3.8.2 compiled from source. my graphics card is an nvidia ...
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1answer
69 views

Reset admin password in Cent OS 7 from grub [duplicate]

I just recently installed cent os 7 and I forgot the admin user password so now I couldnt log in and locked out. I entered the grub boot menu and tried to change the password using password command ...
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1answer
463 views

Grub not loading config file or booting into linux automatically

I was trying to dual boot elementary os with windows on my laptop (Asus Zenbook UX305). To do that I shrank the windows partition using the windows disk manager, and then used the Elementary installer'...
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28 views

How to set grub command for other distros on Ubuntu

I am currently running Ubuntu and Fedora on the same system. I am using the instance of grub which came with ubuntu to select which one to use when I boot. I need to add rdblacklist=nouveau to the ...
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1answer
186 views

LINUX Ubuntu Gnome 15.04 Grub2 doesn't detect other SO

I bought a new machine, New Intel i7 Haswell-E 6 Cores processor, 16Gb 3000MHz DDR4 Memory on a GA-X99 Mobo. I put in it 3 new SDD Disks: One for a clean Windows 10 (Works Fine), One for a clean ...
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75 views

Why doesn't Ubuntu (and Mint) install a boot sequence

I've tried to install a new Linux operating system and I've tried different flavors (x)ubuntu, Mint etc. With and without encryption, with and without LVM, but I'll always get the same error. When ...
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18 views

Does an unintentionally plain “grub-install” mess my system up?

To check my grub version, I issued a ~# grub-install -v with the -v (verbose), instead of -V (version) option. (It is grub 2.02) As I didn't specified any device, what did the command? And can I ...
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1answer
367 views

Grub won't boot after Linux installation

After getting fed up with Ubuntu because it wouldn't boot grub, I decided to use the distro Elementary OS. Elementry OS won't boot grub either. I'm not dual-booting, and I've installed Ubuntu in the ...
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117 views

Grub2 and mounting a rootfs

I am trying to boot a machine using a version of the kernel (linux-2.6.32.68 - unpatched) that I have compiled and mount a small root filesystem. I have created a small ext2 file system using the ...
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1answer
321 views

How to boot linux without an initramfs?

As the title says I'm looking for a way to boot an existing linux kernel without an initramfs. According to this link it should be possible simply by editing /boot/grub2/grub.cfg. But if I try this ...
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1answer
478 views

GRUB : file not found after an update from Debian Wheezy to Jessie

I have an online server which was running Debian Wheezy. Yesterday, I updated it to Jessie. I had no problems during the upgrade, but when I rebooted the machine, it didn't go live. I'm able to ...
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100 views

Set Grub2 boot loader as a default boot loader

I have windows 8 and CentOS 7 on my machine, Every time I'm booting my computer with Windows 8, It sets it's boot loader as a default and whenever I boot from CentOS it sets it's boot loader as a ...
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1answer
170 views

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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1answer
806 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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31 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
117 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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97 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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65 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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174 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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145 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
260 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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100 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
132 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
166 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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39 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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249 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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123 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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250 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 menu....
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1answer
148 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
167 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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928 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 ...
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1answer
55 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
260 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
85 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 ...