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

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6
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Is there a way to prevent Windows 8 upgrade from erasing the bootloader?

Is there a way to tell the Windows 8 installer not to erase the grub bootloader? For example, changing something in the OEM folder or some kind of slipstream technique similar to how it is possible to ...
6
votes
2answers
4k views

How do I set up Grub properly to quad-boot Windows, Mac OS X, Linux, and FreeBSD?

Grub has gone completely insane on me. My quad-boot system was working great up until I upgraded Ubuntu to 12.04. Since Ubuntu overwrote the Grub stuff I had to repair it with my Mac OS X and FreeBSD ...
5
votes
3answers
2k views

From GRUB2, boot an ISO in an LVM2 logical volume

tl;dr - Is it possible to boot from a .iso file that is located in an unencrypted lmv2 logical volume? How? I'm trying to set this up in a VirtualBox VM before I do it for real with my laptop. I have ...
4
votes
2answers
10k views

Searching for grub configuration file in CentOS 7

Im searching for grub.conf file in CentOS 7. I cant find it with locate(I called updatedb before). Where does it stores? In older versions of CentOS I could find it.
4
votes
2answers
154 views

Make GRUB2 work installing Linux over OEM Win7

I bought an Acer laptop with Win7, and installed Linux Xubuntu as second OS. It says the GRUB was installed as well, but at the boot it keeps loading only windows. No grub screen at all. What to do? ...
4
votes
4answers
4k views

Fedora 15 - Kernel Panic not syncing: VFS: Unable to mount root on unknown-block (0,0)

Fast to the point.. I have installed on my dystem a copy of Fedora 15 and Ubuntu 11.04. I first installed ubuntu on /dev/sda5 and grub2 was instaled at the begining of /dev/sda. Next i installed ...
4
votes
1answer
1k views

Does Grub2 support Memtest86+ iso files?

Does Grub2 support Memtest86+ iso files? If it's supported: How could I write a grub entry in grub.cfg in order to boot the Memtest86+ iso file?
4
votes
1answer
7k views

How do I add Windows 7 to GRUB 2?

I am having trouble adding Windows 7 to my GRUB 2 boot menu. I know similar questions have been asked and answered on this site and others, but none of the answers seem to work for me. My setup: Two ...
4
votes
1answer
744 views

Make bootable iso with grub chainloading

My parents' pc has windows 7's boot manager installed at MBR and grub2 is installed on /dev/sda2 (booting linux on /dev/sda2). I want to make a bootable cd so that when booted from it just chainloads ...
3
votes
2answers
2k views

How can I discover which bootloader is installed where?

On a Debian Linux box, I'm running into a very strange situation where after power-on, GRUB fails with the error "no such partition", but if I then hit the reset button, it boots normally. I'm trying ...
3
votes
1answer
7k views

Linux GRUB2: How to resume from hibernation?

Moving to GRUB2 my Arch Linux no longer resumes from hibernation, because the actual resuming is no longer set up. In GRUB legacy I'd write: /boot/grub/menu.lst: kernel /vmlinuz26 ...
3
votes
2answers
7k views

How do I set up grub2 with Xen?

I am booting a new Xen kernel and it all goes fine up until some point during the boot process when the machine reboots without warning. Unfortunately, I don't see errors flash up just before that ...
3
votes
2answers
10k views

How to boot GRUB2 into the simplest Linux shell?

I've got a PC with certainly a hardware problem, the installed Ubuntu doesn't boot, neither does Live CDs. (Although Ubuntu is correctly installed). (the 'normal' boot freezes after some filesystem ...
3
votes
2answers
215 views

Can GRUB2 be installed to USB and used to select between 2 HDDs with Windows 7?

I have recently acquired a second SSD, and decided I would utilize a multi-boot setup to increase my productivity. One drive is for "work" (only contains Windows 7 and software needed for work) and on ...
3
votes
1answer
2k views

Remove Grub 2 Blockfiles from Partition eg. /dev/sda1

In the process of setting up an encrypted Windows partition along with a dual booting Ubuntu, I have had to install the GRUB bootloader onto a partition /dev/sda1 instead of the MBR. In this setup ...
3
votes
2answers
3k views

Fixing bad Windows partition and startup with Linux

Here is what happened: Don't have enough space on my Windows partition Delete the stock "recovery" partition to make space Enlarge the Win partition Software messes up the Windows boot Go under ...
3
votes
1answer
6k views

How to boot directly into Vista and Windows 8 from Grub without the Microsoft boot manager?

I have Vista and Windows 8 installed each on a primary partition and use Grub as boot manager. The problem is that Grub can no longer directly boot into Vista after the installation of Windows 8, as ...
3
votes
1answer
4k views

Grub Autostart with timeout

On Ubuntu 10.4 LTS I want Grub to start the default OS after 5 Seconds. I'd like to see the output of the startup scripts. Currently grub wait forever until I hit return and the output of the startup ...
3
votes
2answers
5k views

How to disable GRUB boot menu and boot in default OS

I have Windows 7 and Ubuntu 10.04 installed on my system. I want to configure GRUB so that it automatically boots into the default OS without displaying the boot menu; it should only appear if I ...
3
votes
1answer
1k views

How to add Windows 7 entry to GRUB2

Just completed a new computer build. I installed Win7 on a 2-disk RAID0 fakeraid. I then unplugged those drives and installed linux mint on a separate drive. I did it this way because if I left the ...
3
votes
3answers
2k views

Grub2 MBR vs. Windows MBR

I have an HP system that came with Vista installed and also a hidden restore partition. I subsequently upgraded to Win7(32 bit) Ultimate, and from there to Win7 Pro. Now the hard drive is failing. ...
3
votes
2answers
2k views

Installed Windows 7, then Ubuntu 11.10, and now I can't boot to Windows using grub2

I know a lot of people are having problems similar to this one, but I don't think this is a duplicate. My situation is a bit different and none of the solutions that are working for other people have ...
3
votes
1answer
2k views

How to boot Debian Testing when grub_env_export symbol not found?

After a recent run of apt-get dist-upgrade and subsequent reboot, I get just: GRUB loading. Welcome to GRUB! error: symbol not found: 'grub_env_export'. Entering rescue mode... grub rescue> ...
3
votes
1answer
816 views

UEFI bootloader

Issue is that EFI systems only allow you to boot using FAT32. I have to deploy multiple images of Windows 8. My WIM image is larger than 4GB and unable to transfer to a FAT32 partition. I've been ...
3
votes
2answers
278 views

Linux does not see sdc on boot (but does during install)

OK, now I'm at a loss. I have been struggling with getting my Ubuntu server to boot. After a couple of days of fighting with it, I gave up and reinstalled thinking that'll sort it out. It didn't. ...
3
votes
1answer
502 views

Why doesn't GRUB see my SSD partition?

I have a HP nc4400 laptop with an SSD drive in it. Sometimes when I reboot I get a There is no such partition. grub rescue > prompt. If I power cycle the laptop all is good and GRUB is able to ...
3
votes
2answers
2k views

Installing existing Ubuntu 11.04 (guest) in VirtualBox on Windows 7 (host)

I have successfully installed existing Ubuntu 10.10 on Windows 7 host as explained in this blog post. Everything worked. I did a clean install of Windows 7 and Ubuntu. Then I tried to follow the same ...
2
votes
1answer
381 views

How can I triple boot from two hard drives?

Please excuse the length on the question; this is a bit tricky to explain. I have two SATA hard drives in my HP dc7100CMT, and their sizes are 500GB and 160GB. In the larger drive, I have Windows XP ...
2
votes
1answer
2k views

Unable to boot Windows 8.1 with GRUB, reboots everytime

I have two HD drives, one with Linux Mint Debian Edition, the other with Windows 8.1. I was able to boot both of them using GRUB, with no problems. Yesterday I tried to boot Windows after almost 3 ...
2
votes
1answer
2k views

Partition problems after resizing

EDIT3 This might be quite the hopeless case, so I posted another method that is simpler, but still need some help with. will this work? backup partition contents of both linux and windows I've ...
2
votes
3answers
7k views

How can I restore grub for Fedora 17?

I have mistakenly deleted all the grub entries while customizing grub using "Grub Customizer". Now whenever Im trying to boot into Fedora Linux a black screen is coming up only with "grub>" prompt. ...
2
votes
2answers
4k views

Boot GRUB2 to GRUB or GRUB2 on another disk

I've got a couple of distributions installed, Gentoo with GRUB2, and openSUSE with some other version of GRUB. OpenSUSE manages it's kernel entries, and I don't want to have to update my main Gentoo ...
2
votes
2answers
3k views

Windows 7 Boot Loader - Remove 30 second waiting time

I've installed Fedora 17 and Windows 7 on two different hard disks as a dual-boot system. The default boot loader is GRUB 2 maintained and configured in Fedora 17. When I startup and choose "Windows ...
2
votes
1answer
72 views

Return from standby mode opens grub

After installing Windows 8 and Arch Linux as dual boot everything worked pretty well. However if I happen to close my laptop lid while in Win8 (the comp goes to standby mode) and then reopen my ...
2
votes
1answer
1k views

Why does my USB hdd returns SG_IO: bad/missing sense data?

I am able to boot and run commands from external USB hdd; the message in question appears for about 45 seconds then booting continues. GRUB2 is installed on internal HDD. When choosing to boot ...
2
votes
1answer
2k views

Linux EFI Live CD/USB

I was trying to boot from CD on a new HP Pavilion dv6 a few days ago with much frustration due to the Linux distributions I tried not working with EFI. Additionally, the EFI Bios is Insyde H20, which ...
2
votes
1answer
4k views

Move Grub to a different drive

I recently added a new ssd to my machine which I intended to have as my main drive. I installed crunchbang and everything went fine, except I unthinkingly accepted updating/overwriting the MBR on my ...
2
votes
1answer
2k views

Ubuntu 11.04 (64-bit) won't boot. Forgot to install GRUB 2. Manual GRUB install fails

I cannot get Ubuntu to boot. I downloaded the Ubuntu 11.04 64-bit mini.iso and installed it in Virtualbox (v.4.1.2 running on OS X 10.5.8). When I installed Ubuntu, I selected "Command-line expert ...
2
votes
1answer
687 views

Making fdisk see software RAID 0

I am following http://grub.enbug.org/Grub2LiveCdInstallGuide and I am using software RAID 0. I am using Ubuntu 10.10 LiveCD and is trying to restore grub2 after installing Windows 7 in another ...
2
votes
1answer
826 views

Error 0xc000007b when trying to start \EFI\ubuntu\shimx64.efi (Ubuntu) through Windows 8.1 Bootmanager on an UEFI System

Error 0xc000007b when trying to start \EFI\ubuntu\shimx64.efi (Ubuntu) through Windows 8.1 Bootmanager on an UEFI System EFI Entries During Ubuntu Setup, Ubuntu automatically created an EFI start ...
2
votes
2answers
429 views

GRUB 2 “stuck” on particular boot option

I just installed a system with openSUSE 13.1 using a btrfs root and made the mistake of picking Windows in the reboot dropdown in KDE. Now grub seems to load Windows automatically every time instead ...
2
votes
0answers
132 views

Windows 7 not showing on Grub 2 list

I have Linux Mint and Windows 7 installed on two separate drives. I have bounced between the two all day (initially trying to get mint to show in the windows boot list, and now working on getting ...
2
votes
0answers
5k views

How do I replace GRUB with the Windows 8 bootloader without losing access to Linux?

I dual-boot Windows 8 and Crunchbang Linux. I installed Windows first, then Linux. GRUB was installed directly in the MBR. However, now I suspect that GRUB is the reason why I can't use bcdedit on ...
2
votes
1answer
1k views

Could not boot Windows 8 from grub2 nor rEFInd on UEFI-system with Archlinux

I have followed the archlinux beginner's guide thoroughly and was able to install archlinux in UEFI mode and has been able to succesfully boot from it. Everything works fine except that I am unable to ...
2
votes
0answers
201 views

Replace Linux Boot-Drive | ext3 to btrfs

I've got a headless server running Debian Linux currently. Linux vault 3.2.0-3-686-pae #1 SMP Mon Jul 23 03:50:34 UTC 2012 i686 GNU/Linux The root filesystem is located on an ext3 partition on the ...
2
votes
1answer
640 views

Configuring Windows Boot Manager w/ GRUB2 and Clonezilla

One of my work tasks is to configure the computers that ship in our products with Windows OS images (Embedded and OEM) with a restore partition. I have been using Clonezilla Live with GRUB2 to ...
2
votes
0answers
379 views

Recover partitions with both Windows 7 and Linux installed using TestDisk

I need to recover my partitions using TestDisk. I used deep search and the result is as follows: Disk /dev/sdc - 500 GB / 465 GiB - CHS 60801 255 63 Partition Start End ...
2
votes
1answer
296 views

Problems with Grub 2 booting priority

Right now I have this setup: /dev/sda1 is NTFS where I store my cross-platform accessible pictures/videos/etc. /dev/sda2 is my Windows 7 boot partition /dev/sdb1 is ext4 partition with Ubuntu 11.04 ...
2
votes
1answer
592 views

After upgrading to Ubuntu 10.04, I've lost my Windows Vista boot option; GParted showing NO partitions

I have a Dell Inspiron 1525, on which I had previously had a dual-boot Ubuntu 9.10 / Windows Vista set-up (plus some other nonsense that came factor-installed). There are some similar questions to ...
2
votes
1answer
2k views

Cannot find grldr in all devices

I'm running wubi on XP machine. Started out originally with 8.04, and gradually upgraded to 10.04. Recently, I was creating linux bootable USB drive, and put it in my system to see if it would work. ...