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

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Can't boot from RAID array - arrays not assembled at boot

On my lubuntu 13.10, I created a degraded RAID array, copied all the contents of the "main" disk and tried to boot from the array. I mostly followed these instructions. At boot the system does not ...
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2answers
1k views

What is `$menuentry_id_option` in grub?

I was fiddling with my GRUB 2 config files (/boot/grub/grub.cfg) and I noticed that the menuentry line for the automatically added Ubuntu boot looks like this: menuentry 'Ubuntu 14.04 Trusty Tahr (on ...
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1answer
406 views

Boot Linux Mint 16 in graphical mode?

Linux Mint 16 has been always booting in graphical mode (KDE). Few days ago it suddently started to boot in console mode, so that I have to insert manually login and password and finally execute the ...
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1answer
2k views

Can't get grub to boot windows 7 partition. “error: invalid EFI file path”

I have an "HP pavilion 7008tx dv7" laptop. It came bundled with Windows 7 and has two 1TB HHD and an 32G SSD. Here is the output form "sudo parted -l": Model: ATA TOSHIBA MQ01ABD1 (scsi) Disk /...
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2answers
257 views

The linux console resolution seting didn't run

I use Gentoo/Linux. Because of some reasons, I want to set the resolution of the console. So I rewrite grub file. GRUB_GFXMODE=1366x768 GRUB_GFXPAFLOAD_LINUX=1366x768 But it isn't run.When I load ...
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1answer
283 views

Booting a GRUB2 image directly in QEMU

I have an image file that the Linux file utility says is an ELF image. If I create either an GRUB2 based ISO file or a qcow2 file QEMU is able to boot it successfully. For example qemu-system-i386 ...
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2answers
461 views

What's the purpose of the --class option in grubs menuentry?

As the title say, why would I want to add a class to my menuentry (in grub2)? If I understand the grub manual correctly, it could be used with themes.. But is that all?
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1answer
3k views

How to dual boot PC-BSD 10.3 (with zfs file system) and debian 7 (crunchbang) using grub2 boot loader in MBR?

I want to dual boot PC-BSD 10.3 with ZFS as the root file system (the only file system) with Debian 7 (crunchbang linux) with ext4 using grub2 boot loader installed in MBR and grub is managed by the ...
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2answers
1k views

Place grub on virtual disk

To learn about Linux startup process I placed grub in a disk image file and tried to boot using qemu. I currently has not put any kernel image into the drive just grub. I installed grub using kpartx -...
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2answers
251 views

How to update grub from another distro?

I have three Linux installs and one Windows 8.1 install on my computer. Now, I've only installed Grub2 on one Linux install. So, I always have to login to that one to use update-grub. The problem is, ...
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35 views

Grub error makes a long load time

I installed trisquel which is based on Ubuntu in VMWare onto a USB. In VMWare I removed the harddrive so only the USB drive would show. I'm booting the usb stick inside of VMWare via boot manager. ...
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110 views

Unable to see partition after installing Mint

I installed Linux Mint 17 on a partition on my (Lenovo y40) laptop which had Windows 8.1 preinstalled (I had to enable Legacy boot in order to get past the blank screen using the bootable USB). Now, I ...
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2answers
2k views

“failed to find a suitable stage1 device” while installing Grub along Windows

I'm currently running Windows 7 64bit as main OS and would like to dual-boot CentOS 7. I'm currently using two drives on my system, one SSD of 120G, and one HDD of 1TB. Windows is installed and boots ...
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89 views

Too many problems with GRUB2; need factory reset, but cannot fresh install

An update corrupted my GRUB, so it takes extra-long to boot my computer since I have to go through the lengthier option via recovery mode. I want to back up my files on Dropbox and restore the whole ...
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1answer
611 views

How can i dual-boot FreeBSD and PC-BSD — with GRUB2 in MBR?

I have a computer with several operating-systems installed on different partitions: FreeBSD PC-BSD Solaris Extended Partition / -partition for Linux-Mint Swap for Linux-Mint /home for Linux-Mint / -...
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2answers
510 views

FreeBSD doesn't show on grub menu after installing onto DualBoot. (Now TriBoot system)

I've got Windows 7, Ubuntu and FreeBSD installed on one separate partitions on one harddrive. When I boot, I only have the option to choose Ubuntu or Windows 7. After a successful FreeBSD install, it ...
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1answer
1k views

Can't get Elementary to appear in grub and boot

I have grub installed but it won't take Elementary OS. I have no idea how to boot it manually because the option is there to do it manually. I do know eOS is located on sda5. I also get the /cow ...
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1answer
451 views

Xen boots old kernel after upgrading

I've upgraded linux kernel from 3.2.0 to 3.16.3. Now Xen boots the old one (3.2.0) instead of 3.16.3. Is there any way to force Xen to find that a newer linux kernel version is available? Or am I ...
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3answers
4k views

Login screen not appearing after upgrade from Debian Wheezy to Jessie

I upgraded from Debian Wheezy to Debian Jessie by changing sources from /etc/apt/source.list and running: apt-get update apt-get --download-only dist-upgrade apt-get dist-upgrade This operation ...
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0answers
316 views

unable to boot after installation : freeBSD

I have Ubuntu installed in my system. I just installed FreeBSD 10.0 in to my system. Here is the screenshot of GParted.     Where /dev/sda1 is where my Ubuntu is installed, and ...
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133 views

Grub: no such device

I had to reinstall Mint recently and after reinstalling, I get an error in GRUB: error: no such device: 94cf97c7-aa0f-48d7-8c9f-42fd51dc1a1a Entering rescue mode... grub rescue> I have tried a ...
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53 views

How to make 'install USB' with custom Linux?

I built my own custom kernel for new hardware.(Not a normal PC, embedded x86 device), and using syslinux I could create a booting USB for that kernel. After a few trial and errors, I was able to ...
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1answer
3k views

How to move GRUB installation to a different partition?

I have a laptop for work. I originally had Windows 7 on it then I installed Linux Mint 17 to dual boot. During my installation of Mint 17 I accidentally installed GRUB on the wrong partition (sda2). ...
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1answer
198 views

How to access and edit GRUB files on SSD from Live CD?

Is it possible to access and edit GRUB files on SSD from Live CD? I need edit /etc/grub.d/10_linux /boot is in separate partition on SSD. If that's possible, how to do this using Knoppix Live CD?
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763 views

Installed Linux Mint on a dual-boot system. Cannot boot Windows 7 anymore

My system initially had Windows 7 and Ubuntu 14.04 installed on two separate hard-disks. The system uses UEFI. The Grub boot menu used to show up and show me boot options for Windows and Ubuntu. ...
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29 views

Read pre-grub2 error messages

Grub2 displays an error message followed immediately by the menu. Without a high speed camera there is no way to read the message. Is there any way to see the error messages that grub2 displays before ...
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1answer
462 views

Failed to get canonical path of `/tmp/kcm-grub2-0/boot/grub'. (Grub2 Bootloader can't access Windows 8 because it is hibernated)

After playing with Grub Customizer, I restart and find there is no Win 8 entry. I go back to Linux (Netrunner OS) and try to find it on both Grub Customizer and GRUB2 Bootloader but there is no Win 8 ...
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1answer
526 views

Set which grub loader to use after dual booting two linux OSes

I installed a second Linux distro recently which replaced the old grub that was already in place with its own fresh installation. I would like keep using the grub loader from the first OS, Ubuntu.
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2answers
9k views

Recover Windows 8 after installing Kali Linux (GRUB)

I've installed Kali Linux over Windows 8, Kali is installed in a seperate ext4 partition(sda2) and Windows in sda1. Now GRUB is not finding Windows 8 on startup ! I can see Windows 8 with os-prober ...
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242 views

How can I convert a chroot into a GRUB2 bootable ISO image?

Say I have a chroot containing what will be a working Linux system, and some additional init scripts to mount an overlay filesystem (e.g. AUFS) over it. I've also generated a GRUB2 boot menu. What ...
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1answer
253 views

What Linux kernel features does os-prober require to find a Windows 8 installation?

I built a new custom Linux kernel using make localmodconfig and after booting the new kernel, update-grub doesn't detect my Windows 8 installation. My distro kernel (with tons of modules I don't need)...
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2answers
391 views

Can't install grub if mbr contains iso9660

I installed Debian/Gnu-Linux on a disk which previously contained an ISO9660 filesystem, and grub can't be installed : root@debian:~# grub-install /dev/sdb /usr/sbin/grub-setup: error: hd1 appears to ...
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1answer
9k views

how to bootup/reboot in verbose mode?

I have Ubuntu 14.04TLS. How can I permanently change grub to switch to verbose mode on bootup/reboot so I can see the rolling text? I would like to make this change stick. Thanks!
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489 views

Trying to Add Oracle Solaris (SunOS) OS 11.2 as a Dual Boot under Grub2

I was Trying to install Oracle Solaris (SunOS) 11.2 as a Dual Boot under Grub2. I followed the Grub2 instructions for Adding an ISO and I get the following Grub Entry for the Solaris ISO -- ...
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2answers
532 views

UUID vs /dev/sdX in FSTAB

I have Linux system in which we force /dev/devname for running the system. proc /proc proc defaults 0 0 /dev/sda1 / ext3 barrier=1,errors=...
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439 views

Fixing System boot failure due to GRUB Error

We have a Debian based system, which unpredictably goes in to non bootable mode. Listed are the errors that usually occurs in the system. 1 > GRUB RESUE 2 > INTIRAMFS 3 > INIT SCRIPT FAILURE ...
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2answers
2k views

How to dual boot Xubuntu with Windows 7 & 8 from separate drives

I had Windows 7 and 8 on a hard drive, then I decided to try Xubuntu, and installed it on a separate hard drive. Then I tried using EasyBCD, but Windows doesn't recognize Linux partitions. ...
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32 views

Generate what a GRUB2 kernel line would look like

In GRUB 0.97 we were able to see what the kernel line/options would look like by just viewing /boot/grub/grub.conf. Now the only way I know how to check the next boot kernel options/kernel version ...
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1answer
1k views

Centos VFS cannot open root device

Yesterday I did a kernel update on a virtual machine. When I restarted the machine unfortunately I got the error Kernel panic - not syncing VFS After some searching I found out I should go to GRUB ...
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How to know if I'm booting using UEFI

I was searching, but didn't found an obvious way to know if GRUB is using UEFI in the system boot, or the BIOS compatibility mode or a full fledged BIOS. Only Windows methods. Is there something in ...
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60 views

Signing GRUB bootloader

The laptop I recently bought uses UEFI. As an experiment, I think it would be really cool to generate my own keys and use them to sign my bootloader, and also to password protect the bootloader. How ...
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2answers
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Recovering from 'grub rescue>' crash [closed]

Originally posted to AskUbuntu.com ... AskUbuntu has adopted a policy of closing questions about EOL (End Of Life) versions. There's a vocal contingent to remove them as well. To prevent ...
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4answers
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Is GRUB the best bootloading solution? Is there an easier alternative?

I have had some rather bad experiences with GRUB2. I could say (and have said) some nasty things about its design and development process. I especially dislike its means of update: for whatever reason ...
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1k views

installing grub and a working kernel over an old and broken debian system

I have an old debian system, which I always have been able to upgrade over the years. I had installed an old kernel, compiled by me from sources. After my last dist-upgrade (using testing ...
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Grub doesn't recognize windows 8

Recently, I installed Windows 8.1 and Linux Mint Debian Edition on a new laptop. Neither installs seemed to have any issues, and both operating systems run well. However, the only way I can switch ...
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1answer
5k views

UEFI install (14.04) boots to GRUB command prompt, no GUI

I just installed zorin 9 core (14.04) on my Hard-Disk in UEFI mode. But, when I boot, all that comes up is a GRUB2 command line. I've searched for solution and came up with this command configfile (...
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5answers
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Installed Centos 7 after Windows and can't boot into CentOS

I wanted to setup a dual boot for Windows 7 and CentOS 7 I had a Windows 7 machine with 500GB disk. I shrank the Windows partition to provide space for CentOS 7 (roughly 230GB). I created a USB ...
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1answer
620 views

Upgraded to mint 17, keyboard stuck in non-english (wrong layout) language - can't login [duplicate]

I had Linux Mint 16 with English and Russian keyboard support. Upgraded to Mint 17, now I cannot get past the ecryptfs passphrase. If I enter Grub loader I can pick "Ubuntu with Linux 3.11.0.12-...
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79 views

How to make grub Command Line Default?

I'd like to make grub by default load it's command line instead of automatically booting from it's list of options generated by update-grub. How can I do this?
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845 views

No such device: grub rescue

I have got a machine with Windows and Linux Mint. Now that I needed to upgrade my Mint because I needed the new fixes, I cannot boot. I get the error message no such device, grub rescue. My guess is ...