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

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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.
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votes
1answer
4k views

How to scroll in grub2 shell?

The outputs of the help and/or vbeinfo command of grub2 shell are massive. How to scroll up the output? I've tried PageUp、Shift+PageUp, but nothing happened.
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votes
4answers
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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 ...
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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 ...
6
votes
2answers
6k 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 ...
6
votes
3answers
685 views

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 ...
5
votes
3answers
321 views

Installing bootloader on a Mac

Due to a somewhat odd requirement for a particular Linux installation, with a particular software suite, I found it best to use ddrescue to populate the harddrive with the partitions and their data, ...
5
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 ...
4
votes
2answers
166 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?
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votes
2answers
11k 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 ...
4
votes
4answers
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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
2answers
13k 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 ...
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votes
3answers
3k 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. ...
4
votes
1answer
7k 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 ...
4
votes
1answer
2k 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
13k 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
990 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
1answer
12k 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 root=/dev/disk/by-...
3
votes
2answers
5k 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
5k 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 ...
3
votes
3answers
311 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
3k 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 /...
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votes
2answers
4k 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
3k 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 ...
3
votes
1answer
5k 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 ...
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votes
2answers
6k 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
2k 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
1answer
1k views

Windows 10 / Linux Dual Boot - Boot-loader Problems

I am currently running a dual boot of Windows 10 Home 64-bit and Xubuntu 15.04 64-bit on my machine. I have Windows 10 on an SSD, Xubuntu on another SSD and an HDD for storage formatted as NTFS (this ...
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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
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 ...
3
votes
1answer
158 views

Invalid partition table

Before getting this "invalid partition table!" warning, I successfully installed Debian and Ubuntu side by side. No problem, no boot warning, no mess with grub, everything ok. But yesterday I decided ...
3
votes
1answer
8k views

Dual-booting Kali Linux and Windows 7, error with file: “\NST\AutoNeoGrub0.mbr”

I have tried to install Kali Linux 1.0.6 alongside my current OS - Windows 7 64 bit. I have a Dell computer, with SSD hard drive only (256 GB). At first I tried installing Kali a few times and made a ...
3
votes
0answers
168 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 ...
3
votes
1answer
959 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
369 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
541 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 ...
3
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. ...
2
votes
2answers
4k views

Edit boot menu when booting from a live CD

My laptop has a nomodeset problem; check the link for more info. Basically, I would need to add nomodeset in grub in order to boot any linux distro. If I want to use a distro, I'd need to install it, ...
2
votes
1answer
781 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
2answers
983 views

Install Linux Mint 14 as third OS after Windows 7 and Ubuntu Grub2

I would like to install Linux Mint 14 in a spare logical partition, but am afraid it would overwrite the existing Grub2 which boots to Ubuntu 10.04 and Windows 7. How best to proceed? Current setup:...
2
votes
2answers
8k 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
6k 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
6k views

Howto install and configuring grub2 on a USB thumb drive

I'm wanting to play around with grub2 with linux on a thumb drive. My host OS is Kubuntu. grub-install allows you to write the grub bootloader to the MBR of a disk which is great. However, uodate-...
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votes
2answers
4k views

Make GRUB 2 boot Windows 8 safe mode

I have a dual boot configuration: Windows 8 Consumer and Ubuntu 11.10. I tried to install the Asus drivers for my motherboard (P8Z68-V LE EFI) in windows 8, and i now get bluescreens when starting ...
2
votes
1answer
58 views

Why does grub2 boot menu show abnormally like this?

My distribution is Fedora 22. The grub2 boot menu screen is obviously wrong. How to make it show in full screen? Thanks in advance. PS. My display's default resolution is 1920x1080. When I logged ...
2
votes
1answer
116 views

Grub2 immediately boots into Linux

OpenSuSE 13.2, running grub2. SHORT VERSION: Yesterday I had a normal grub2 boot menu and could choose to boot (successfully) into Linux or Windows. Today, I see the grub2 header displayed for a ...
2
votes
1answer
167 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
2answers
5k views

Windows 8 changes boot order

I installed Windows 8 and Ubuntu 12.10 on a 3TB GPT disk in UEFI mode. Both can boot up OK. Both operating systems created their ntries in the UEFI boot menu, there's an "ubuntu" and a "Windows 8" ...