GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use the GRUB2 tag for questions dealing with GRUB2, a rewritten version.

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Boot FAIL with reinstall

Some months ago I was trying to install Ubuntu, but there were some problems with GRUB. It would not appear while loading. 2 weeks ago I installed Windows 10. After 3 days I did not like it, and ...
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3answers
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none of the f-keys work to get into boot menu or bios

I have a lenovo V570. I had a dual boot of ubuntu/windows8 using GRUB. I happened to mess up my ubuntu system and the ubuntu option has disappeared from the GRUB menu. I still have the ubuntu flash ...
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25 views

Windows 8.1 cannot be started from grub2

today I decided to use linux again after installing Windows 8.1... I've tried to boot one of the already existing Linux partitions on my computer but I wasn't successful. So I installed PinguyOS (A ...
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1answer
14 views

Does msconfig's boot setting show for Windows Bootloader entries?

I noticed on msconfig a boot tab. Currently, it has just one entry--Windows 8.1. If I were to dual boot Ubuntu into the computer, and use Windows Bootloader as my bootloader instead of GRUB, using ...
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1answer
23 views

UEFI strange behavior

Hi have a toshiba Satellite L50-A1-D6, with the latest (14/11/2014) bios update. I have removed windows8, completely formatted the HD ( in GPT ) and installed Linux (Ubuntu but this is not really ...
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29 views

Can't boot from any source

I recently tried to install the Windows 10 developer preview on my laptop. The installer seemed to hang immediately after I selected my install partition, but I left it for about an hour to make sure ...
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1answer
40 views

Can't get Windows 8.1 to appear in loader list in GRUB

I have a Dell laptop with Win 8.1 preinstalled and wanted to dual boot to Linux. So I partitioned off 100gb of the main and only hard drive and installed Kali Linux (Debian 7). It asked if I wanted to ...
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35 views

grub-mkconfig doesn't detect /boot

lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 596.2G 0 disk ├─sda1 8:1 0 25G 0 part /mnt/arch ├─sda2 8:2 0 2M 0 part ├─sda3 8:3 0 4.5G 0 part ...
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7 views

GRUB (with theme) messing up graphics after booting an entry

I have to set up a HP ProDesk 600 G1 desktop computer: Intel i5-4590 CPU with integrated HD Graphics 4600. When using a theme in GRUB (no matter which one), selecting an entry in the menu and booting ...
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23 views

Install grub for multiple OS

On my PC, I have Ubuntu 14.04 and Mageia distribution. Recently I installed Windows 7 on a partition but could not get my grub back. I tried boot-repair but in vain and mageia is getting loaded. How ...
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15 views

Can't bood freebsd install

I have an amd64 architecture, three hard disks and grub2 in efi mode. FreeBSD is installed in the third disk using a gpt layout with another partition that doesn't contain an OS: partition 1 (NTFS) ...
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1answer
36 views

Grub2: “Invalid partition table!”

I have recently had to change bootloaded from my old syslinux to GRUB2. Since I have installed GRUB2 bootloader I am getting the following message on every boot: Invalid partition table! The ...
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0answers
21 views

Centos6.5 can't use serial console but can see serial output messages during boot up

I configure CentOS 6.5 x86_64 version to support serial console. I edit configuration files as many people suggest. In GRUB, Add these two lines: serial --unit=0 --speed=115200 terminal --timeout=5 ...
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1answer
30 views

Computer won’t boot directly from new SSD

I got a new SSD and installed Elementary OS Luna onto it. But I can’t boot directly from this drive. I always have to select that I want to boot from the old HDD and than select in Grub, that I want ...
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71 views

Boot Ubuntu, Windows 8.1, and Windows 10 Technical Preview with Grub

On my computer, I have two hard drives: one that contains Windows 7, and another that has Ubuntu, Windows 8.1, and Windows 10 Technical Preview. When I turn on my computer, Grub prompts me to select ...
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25 views

Grub Loader doesnt appear

I have Windows 8 in my Samsung laptop. I wanted to install kali-linux, so I downloaded the image and burned it into a dvd. When I installed it kali-linux told me to remove the dvd and it completed the ...
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1answer
12 views

initramfs fails to boot ubuntu 8.10 server

I have recently compiled my linux kernel (3.16.2-x) and tried to install it into two different ubuntu 8.10 server virtual machines appliances. Following is how the upgrade process looks like: ...
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1answer
32 views

How to hide grub menu on boot and show it only when pressing a certain key?

I want to install linux in a machine, along with windows, but I wouldn't want people to notice. So I thought if there was some way to hide grub menu on startup to make it directly boot from the ...
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1answer
15 views

Accidentally deleted files from /boot

I was trying to build a linux kernel for ARM, and, agh, I don't know what came over me and I executed "make install". It doesn't end there either: while attempting to delete the ramdisk and kernel ...
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0answers
7 views

update-grub creates a menu entry with read only option

I am trying to automate the installation of a new linux kernel across a data center. After the installation, my script runs update-grub to add an entry to the grub menu. It updates ...
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0answers
12 views

Boot Debain with external monitor as primary display device

I have an old HP laptop with non-working display. So i decided to convert the laptop to a private server. I connected it to my TV and installed Debian 7.7. The installation was smooth with the display ...
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1answer
98 views

Ubuntu Server 14.04 LTS - GRUB fails to install on a VM

I'm trying to install and run Ubuntu Server 14.04.1 LTS on a VirtualBox for testing purposes. However, I can't even pass the installation process without errors, and it will fail to install the GRUB ...
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1answer
51 views

Last Windows 8 update removed Grub

I have a dual boot with Windows 8 and Fedora 20. Since 2 days ago, it worked well, but actually I rarely use W8. I booted briefly on it and it decided to install some updates, which made Windows ...
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1answer
23 views

Access first to GRUB in dual boot with WINDOWS 8

I've already install a dual-boot verison of ubuntu on my windows 8. When I launch my computer, I don't see the grub, it launch windows 8. During the launch of the computer I can press 'esc' so I get ...
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54 views

What's wrong with this GRUB setup?

I have two hard disks. The first one contains both Windows and Ubuntu installations, but the first MBR boots to Windows and the second MBR boots, in theory, to Ubuntu. This worked fine until recently. ...
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25 views

Grub boot to rescue CD

I have a virtual machine (Centos 6.2, fwiw) that hangs on fsck. I can get to a grub (pre grub2) menu. Is there a way to have it boot to the rescue CD (Centos 7 Live) I've attached to this VM? The ...
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1answer
40 views

Bios stopped boot from usb

my pc is an ASUS RoG g750jx with dual boot : Debian Jessie and windows 8.1 , until yesterday everything was fine. Yesterday booting my pc it didn't display GRUB and directly booted to Windows,i ...
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0answers
15 views

Grub “no such device” error does not correspond to config

GRUB is failing to boot. BIOS tries to boot the second hard drive first (in Legacy Mode, and the first hard drive is Windows) but this yields a no such device: cfb69400... error. The given id does ...
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0answers
18 views

How to find a folder listed in my grub menu.lst

A friend gave me a USB stick that he had setup with a lot of useful utilities (like Hiren's Boot CD, an Ubuntu distro, a lot of hardware testing tools, etc). I want to update the version of Hiren's ...
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43 views

How can I fix GRUB on this dual disk setup?

I am dual-booting Windows and Ubuntu. The machine has two hard disks, both OSs are installed on sda (an SSD), but sda's bootloader uses UEFI and goes to Windows, whereas sdb has GRUB and boots to ...
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31 views

difference between installing grub in MBR and partition

The two command descriptions below are copied from a chroot description. I must say that I am confused by the distinction; it leads to several questions: What is the effective difference between the ...
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45 views

Windows 7 changes my uefi default boot when it starts

I installed Windows 7 in a HP Compaq 6300. First I disabled secure boot and enabled legacy mode. Then I installed Ubuntu in other partition. Ubuntu detected some uefi partitions and let me create / ...
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1answer
155 views

Cannot EFI boot from Clonezilla disk image

I have created a Ubuntu Server 14.04 system that I would like to clone to several other machines with exactly the same hardware specifications. The system is an Intel NUC2820 with 30 GB SSD. The ...
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28 views

Dualboot Ubuntu Server and Centos. Grub installed in the Ubuntu partition. How do i edit the configuration files from Centos or run grub commands?

As the topic says. I'm running both Ubuntu Server and Centos. Grub is installed to the Ubuntu Server install (/dev/sda). I want to run some grub commands to edit its configuration files, more ...
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32 views

Remove GRUB 2.02 Beta 2

I want to remove GRUB 2.02 Beta 2. Due to installation of Ubuntu 14.04, GRUB 2.02 Beta 2 get automatically install. I want to replace it with GRUB 2. How to do that?
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41 views

Grub rescue after corrupted hard-drive (“read-only filesystem”)

I run xubuntu 12.04 alongside a NTFS storage partition and a windows 8 partition. I moved my MySQL data directory off the xubuntu (ext4) partition, onto the NTFS partition, and did an import of a ...
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20 views

How to come out from GRUB?

I had installed windows7 home basic and OpenSuse. Then I reinstalled windows 7 ultimate. Now my openSuse had gone. I have tried to get OpenSuse back through rescue system using live CD. But now after ...
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1answer
35 views

GRUB Bootloader selection window showing 2 times

Currently I have installed 4 os on my 2 HDDs, Windows 7, Windows XP, Ubuntu 14.04 & Open Suse 12.3, in same order. Before I have Installed Open Suse. GRUB was showing options: Windows XP Windows ...
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16 views

Creating a wizard with a grub config file

I have a grub config file that allows me to pick several pre-boot options of a debian installer. Unfortunately, I can't nest these menus because of grub's unfortunate scope rules (Scope doesn't ...
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1answer
31 views

How to move GRUB to another hard disk

I installed Kali Linux on an external HD, but in the end of installation I choose to save GRUB on it. Now, every time I boot up the computer, GRUB asks for the External HD. I tried to follow some docs ...
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1answer
386 views

How to restore Windows bootloader and still have Kali Linux

I installed Kali Linux 1.0.9a on my Windows 8.1 system today and installed it, but I don't want the GRUB bootloader menu. I want to use the original Windows bootloader. How can I do this?
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61 views

Grub rescue screen on dual boot laptop

I have a laptop with a dual boot of Linux Mint 17 and Windows 7. This evening I booted Mint and unconsciously pressed some buttons and came into a HP backup screen. I exited this screen and now my ...
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67 views

Add Windows Server 2012 R2 to Grub2 boot-loader

Short version: I have Windows 7, Windows Server 2012 R2 and Ubuntu 14.04 installed on my hard disk. I use grub2 as my boot-loader, so when I start up I can choose between operating systems. The ...
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0answers
15 views

How to change the main grub

I have two ubuntu installs, A and B. The "A" is my main install. In B, I have compiled and installed a custom kernel. Then I run sudo update-grub. The problem is that, running grub in "B", it does ...
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52 views

BIOS does not shows up Windows 8 EFI after Ubuntu install & incorrect partitioned size

I had window 8.1 preinstalled on my laptop. Recently I also installed Ubuntu alongside to have dual boot. But anyhow after install i.e. restart or due to some alteration; I can not see choices to boot ...
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1answer
38 views

Bootloader priority issue

Good day to you all. I have a problem with the bootloader on my pc. I've followed a guide and i've partitioned my SSD so that now I have W8.1 and Ubuntu 14.04. The problem is that when I switch my pc ...
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1answer
12 views

After “grub>” mensage install Fedora 20

After installing the Fedora 20 sucessfully and rebooted, I have received the message on boot: Grub> I stay stuck on this screen and don't know what to do. I think it might be a problem to load ...
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38 views

How to create bootable USB in Linux without root access?

My laptop HD died (continuously getting grub-rescue screen with attempt to read or write outside hd0 error), now I dont have a bootable CD/USB and all PCs at my workplace have non-root access (so ...
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19 views

Safe to blank MBR of a disk after adding it to an RAID1 array with mdadm?

I created a RAID1 array of two disks, /dev/sda and /dev/sdb, using mdadm. After several booting problems related to the BIOS and SATA/RAID controller of the board, I accidently created some new ...
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1answer
60 views

Grub 2.02 on vacation after first boot - Arch on mSATA USB

I have a freshly installed Arch Linux LVM inside a LUKS container all nestled on an external USB SSD. Although I have no problem with the Arch system itself, I do have a problem with Grub. After the ...