Grub2 is Grub version 2, a multiboot bootloader from the GNU project.

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(UEFI) Not booting from USB and bootloader overwritten

Okay, I'm really out on a limb here... I was creating a UEFI bootable USB thumb drive for reinstalling Debian Jessie. I was really careful during the process not to touch my main drive at all. ...
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17 views

Ubuntu unable to boot from clean install

Here's some background in case it will help: I've recently been having trouble booting my computer, as you might have guessed. For some background, it started when I tried to re-install some NVIDIA ...
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16 views

Deleting one of the OSs in a multiboot arrangement

I am multibooting Windows 7, Linux Mint and Suse Leap on one computer, having installed these OSs in that order and each into separate partitions. Since Suse was the last OS to be installed, the ...
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33 views

How to merge GRUB with Windows loader

My system has Windows 7 pre-installed, I later created a new partition and install Ubuntu 14.04, recently I just install Windows 10 in another partition. Everything when fine except that GRUB ...
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32 views

Cinnamon 17.3 Grub Failure on Re-Installation

How can I force Mint 17.3 Cinnamon to ignore a grub error to complete the installation? Or how can I fix the grub lock? I am attempting to reinstall Mint Cinnamon 17.3 on a Microsoft Surface 2 Pro ...
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24 views

Can grub2 access files on fat32 USB?

This post relates to using grub2 in an MBR boot scheme not GPT or EFI. What must I do to allow a file's contents to be read from a USB fat32 file using grub2? I press "c" to get to the grub console ...
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50 views

EFI and GRUB2 where to get binaries and how to mount the boot system

UEFI and GRUB2 Anybody knows the site to get the binaries (bootia32.efi and bootx64.efi) to boot grub2... also the GRUB2 binaries... and a good tutorial help on this... I want to make a multi-boot ...
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36 views

How to reinstall truecrypt on the MBR?

I've googled this so much and can't find the answer. I had a dual booted system with a TrueCrypt encrypted Windows partition and a non encrypted Ubuntu partition (accessed with GRUB2) that was ...
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15 views

How can I add lua support to grub2, or at least file copy functionality?

I am trying to add lua support to grub2 and having a devil of a time finding info on how to do that. The links provided in the answer to (String manipulation in Grub2) no longer have any lua ...
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27 views

Is it possible to copy files with grub2 scripting?

I am trying to work out a few details for a dual boot, public use (i.e. public library context) that runs Windows 7 and Linux. I am using Windows 7 and Linux Mint. Windows 7 runs on a VHD file (...
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44 views

How to GPT+UEFI boot on VirtualBox Linux guest

I managed installing my guest Linux in the VM. But I found the entry added by "efibootmgr" will not persist over reboot. Currently, this is what I am seeing: BootCurrent: 0002 BootOrder: 0000,0001,...
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94 views

What is the difference between Windows UEFI bootmgfw.efi and Windows UEFI bkpbootx64.efi? [closed]

My computer screen while starting computer Also help me by explaining why windows UEFI loader was first taking me to windows but now is redirecting back to this window.
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1answer
31 views

Set up dual boot Debian (Mint LMDE) Linux + Windows 8.1 **without** efi

The specifics is that in my case Windows 8.1 is installed not in EFI mode: so the partition table is in msdos/fat format and there is no efi partition. Unfortunately: All how-tos and manuals I've ...
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1answer
29 views

Booting a Linux Live tool from FreeBSD UFS2 partition

I would like to boot a Live Linux CD, without needing the CD. Take for example GParted or CloneZilla. Which I periodically boot off their Live CD. But I would like to eliminate the use of the CD/DVD ...
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49 views

Windows 10 causes GRUB “TPM error 2”

I had a dualboot on my laptop: Windows 8 + Fedora 23. Recently I've re-installed Windows and immediately upgrade it to version 10. Then GRUB 2 bootloader was restored using Fedora Live USB stick: # ...
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11 views

Cutting strings in GRUB2 shell

Is it possible to cut strings in GRUB2's shell like I can in bash? Let's say I have a variable str that is set to This is a test.. How can I extract a substring from it? Things like ${str:2} don't ...
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45 views

What do I need to boot Windows 10 from a usb drive on grub2?

I am trying to install Windows 10 on my Dell XPS 13. I installed the ubuntu 16 I have running now from a bootable usb, but I have not succeeded with windows 10. I got the .iso from microsoft: https:/...
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65 views

What could be causing Windows updates to fail?

I have a multi-boot system with Ubuntu 16.04 and two copies of Windows 10. The partition layout is as follows: /dev/sda1, file system = ext4, size = 30.52 GiB, label = Ubuntu 16.04 /dev/sda2, file ...
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52 views

Grub will not boot to windows

I recently installed Ubuntu with the grub boot loader that comes with it. After the install Grub fails to find the Windows. My setup: HD1 & HD2 -> Samsung SSDs in Raid0 via Motherboard ...
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1answer
20 views

Debian pvmove of root lv into raid10 device resulted in unbootable system

I was in the process of moving logical volume extents onto an raid 10 array assembled with mdadmin. One of the logical volumes moved was the root directory (debian testing system) which was previously ...
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70 views

Virtualbox: booting OS X guest on Ubuntu host on a Macbook Pro

I want to boot Linux natively, and boot the Mac's own native OS X virtually inside Linux. I've followed the same procedure as I've used in the past to boot Windows partitions in a Linux host, but it ...
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25 views

After shutting down windows, grub boots to command line interface

I have a dual-boot setup on my Asus Laptop. I have an SSD which holds my Windows 10 and an HDD which holds my Linux Ubuntu and a partition for data for windows. My laptop also uses UEFI. When i boot ...
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58 views

Grub2 not showing Windows after dual boot with Arch

I have recently installed Arch Linux from Architect and came into a problem after install where Windows 10 does not show up on the grub2 menu. The only options that show up are Arch Linux and more ...
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124 views

Ubuntu not booting properly from Grub2Win

I installed the Grub2Win utility and was able to set up the grub2 boot loader successfully. When my system boots, I am able to choose an operating system. Windows currently works fine, but when I try ...
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1answer
55 views

Unable to boot into Ubuntu 15.10

I have Ubuntu 15.10 alongside a Windows 10 OS. My issues has nothing to do with the latter btw (I hope). I had few tutorial videos in the Videos folder in Ubuntu, which I wanted to move to another ...
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139 views

grub2 and windows in UEFI mode woes

My /etc/grub.d/40_custom reads: menuentry 'Windows 10' { set root='(hd0,1)' chainloader +1 } Yet when I try to boot windows 10, I get an error stating that the path to EFI is wrong. The ...
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1k views

grub2-install: error: /boot/efi doesn't look like an EFI partition on a fresh Gentoo install

I need a Gentoo 13 machine to test some software on the platform. I'm not a Gentoo regular, so I'm suffering their install procedures. I'm at Configuring the bootloader | Installing GRUB2, and it ...
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63 views

GRUB2, how to automatically boot Debian?

About 1.5 year ago I got myself a new Acer laptop that came with Windows. The first thing I did was a complete format and install Ubuntu, I think it was version 14. Trying to manage Python versions I ...
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32 views

Grub2 boot unpacked Windows iso from usb

I'd like to boot unpacked Windows 7 iso from usb. What I have: 16 GB usb with ext2 and fat32 partitions (both about 5 GB). Grub2 installed on usb, which loads pure iso images from ext2 partition (...
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64 views

Unable to boot after kernel upgrade

My PC triple boot Windows 10, Ubuntu 15.10 and Kali 2016.1. It boots from Ubuntu Grub. Everything worked fine until yesterday. Yesterday Kali released version 4.4 of the kernel and I installed it. ...
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29 views

Installed Ubuntu on a USB and got some unwanted results

So, I wanted to install Ubuntu on a simple usb drive but it also installed grub2 on my system (which I didn't want) and now all hells broke loose. Apparently, it set the USB as dev/sda and my default ...
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88 views

Unable to install Grub manually

I sent as unable to install Grub It says that cannot find efi directory Please refer the image for error details I am installing it from live Kali linux
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68 views

Error installing grub during Kali Linux Installation

I was unable to install grub during the KaliLinux Installation It is showing the error grub-install dummy failed. This is a fatal error See image below:
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76 views

Linux in external Hard Drive

I installed linux on a external hard drive but when the external hard drive is unplugged I cannot access windows(kind of grub appers, but grub is in the external hard drive), only if I put the ...
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43 views

grub always hides menu and boots to Ubuntu 14.04; must press ESC

No matter what I change in /etc/default/grub or /boot/grub/menu.list, grub always hides the menu, shows a 10 second countdown timer, and then boots to default (Ubuntu 14.04). To access MacOs, I must ...
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93 views

How to setup grub fallback functionality for Centos-7

I have multi-boot environment Centos-7.1(Kernel-4.2.6 on /dev/sda3) Centos-7.1(kernel-3.10 on /dev/sda2). I want to boot through Centos-7.1(kernel-3.10 /dev/sda2) on failure of Newly installed (...
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212 views

Grub2 EFI falls to Grub Shell unless I hit F12 immediately after power on

I have Opensuse Tumbleweed together with Windows 10 on my Asus ROG laptop. The issue is quite weird - every time I power on or reboot, Grub2 EFI falls to grub2 shell and randomly it doesn't see the ...
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35 views

“Reboot and select proper Boot device” for the 2nd time

I have been using Ubuntu 12.04 and Windows 7 for quite some time now. A few weeks back I got the error message below, but surprisingly I was able to boot again after few days. Yesterday it crashed ...
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41 views

Cannot find root device when loading a new kernel image

I am trying to install an old linux kernel image 2.6.32.69 just for learning purposes. The machine is ubuntu 15.10 32 bit. The commands to build kernel are: make oldconfig make bzImage make modules ...
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1answer
21 views

Windows 8 removes grub2 as default bootloader

I have a dualboot setup where I keep Linux distros in separated partitions on one SSD, and my Windows drive on another. Recently, I had to wipe my Windows drive and reinstall Windows, which was great ...
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43 views

Vista Recovery Partition ERROR Cannot open C:\RECOVERY.DAT

until my last installation of Windows Vista (from the Recovery Partition) and Ubuntu, I was able to boot the Windows Vista recovery partition from the GRUB menu, simply clicking on the corresponding ...
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64 views

UEFI mixup with previous windows 10 disk on Lenovo

Intro I am asking the same question as I asked on askUbuntu (but did not get feedback). References: http://askubuntu.com/questions/714839/uefi-mixup-with-previous-windows-10-disk-on-lenovo Question ...
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16 views

Install Linux Kernel without APT

I recently tried to install Debian, however apparently the small USB installation over network has a bug where it can't complete installation of the Kernel. Thus I see the grub shell when I boot. I ...
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114 views

Mactel Fedora 23 - Debugging Slow EFI Boot

I recently installed Fedora 23 on my Macbook4,1 (early 2008 model). After the white screen/apple sound at boot, I see a black screen with an underscore cursor for about 10-15 seconds before the Grub ...
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1answer
166 views

Manually adding windows 7 to the grub boot menu

This seems like it should be simple, but I've spent two hours following all the advice I could find to no avail. I have windows 7 installed on one internal harddrive (sdb) and I have just installed ...
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1answer
115 views

Can't configure a dual boot in Lenovo G40-80

Hey guys I'm trying to make a dual boot in my lenovo, but I can't make grub works at all! I already tried to use boot-repair three times with no success, all the times the grub start with a simple ...
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57 views

GRUB boot error rescue

Recently created a Linux/windows 10 dual boot and something went wrong.... every time i boot up my PC it brings me straight to GRUB rescue and i am unable to type or access the BIOS menu (i have tried ...
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106 views

Grub2 support for ZFS

I have installed PCBSD on my machine with Ubuntu on it with the intension of dual booting. However, the grub install during the installation fails. I would like to set up a custom grub script to load ...
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2k views

Windows 10 ISO in Grub2 Multiboot

I'm attempting to create a multipurpose AIO USB stick for everyday use. So far I've been able to get Mint, Tails, And Hiren's boot cd all successfully working off of one device similar to the tutorial ...
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42 views

grub2 on my embedded Board Corrupted, entered into grub rescue mode

I am working on a Intel board with CentOS running on it. My grub2 got corrupted. and entering into grub rescue mode Problem - whenever I reboot the device. grub rescue contains below info, when I ...