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

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Manually move kernel image to /boot directory

I have compiled my own kernel on Gentoo (following the handbook) and then I have moved the bzImage to /boot/vmlinuz-4.0.5. But when I boot the system I get the Grub2 shell. What am I doing wrong? ...
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Arch Linux grub installation error “airootfs”

I was following the official installation tutorial. Everything was smooth until the boot loader section. I had encountered the error of /usr/bin/grub-probe: error: failed to get canonical path of ...
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2answers
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How can I boot the PC-BSD live DVD-ISO IMAGE directly via GRUB2?

Via the loopback command, GRUB2 allows to directly boot an ISO file. Now, I've configured the according menuentry to boot the PC-BSD Live DVD ISO, but when I try to boot it, the FreeBSD bootstrap ...
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15 views

CentOS 7 grub option is missing after upgrading windows 8 to 10

My system was dual booted with CentOS 7 and Windows 8. After I reinstalled the latest Windows 10 Pro and removed windows 8, my system is only booting with Windows 10 as the Grub2 is not appearing at ...
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7 views

Get correct Windows partition back in Grub

Model: HP Compaq Mini 32 bit. Device: Samsung Evo SSD 120 GB. OS: Dual boot --> Linux Mint 17.1 Xfce & Windows 7 Starter. TLDR: Fixed Grub + got Mint back using parted rescue; win7 reboots or ...
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1answer
307 views

What is the purpose of the grub command line

In the grub bootloader if you press esc it will take you to a command line interface that looks like grub> _ What is this promt used for? It doesn't look like it's connected to Linux. Is it a ...
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1answer
8k views

Elementary OS installation failure

I've been trying for a few hours now and I still cannot find out why I cannot install Elementary OS. Every time I try to install it I get: the 'grub-efi' package failed to install into /target/ ...
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1answer
21 views

No entries for Ubuntu after executing update-grub on CentOS

My server is running Ubuntu 12.04 LTS from /dev/sda3 (ext4). I experimented with CentOS 7 some time ago and that is on /dev/sda2 (xfs) and its grub is used for booting. It showed only the latest ...
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4 views

grub2-install: error: cannot open /boot/grub/i386-pc/usbserial_common.mod: No space left on device

I am at the final step in a Gentoo installation, and I have some problems installing grub2. I did an emerge --ask sys-boot/grub and everything went ok. After this I ran (chroot) livecd # grub2-install ...
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10 views

Is there a way to edit the title of GNU GRUB2 itself (not a title of a menu entry)?

I'm interested in knowing if there's a way to edit the GRUB2 boot menu to display a banner at the top. We have several machines that boot from SAN. I'm doing migrations and our SAN team ...
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11 views

Grub unknown filesystem [duplicate]

I accidentally deleted my Linux partition and the next error message appears when I boot: error unknown filesystem grub rescue. I can't even boot Windows from CD or Linux from usb.
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2answers
8k 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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1answer
149 views

Boot problem with grub; Arch Linux, Xen, Dom0

After installing Arch I installed grub with these commands: pacman -S grub grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=grub --recheck grub-mkconfig -o /boot/grub/grub.cfg ...
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1answer
15 views

how to resume GRUB2 upgrade apparently blocked by /boot filesystem type=ext2?

details As detailed here, the /boot on this Debian Jessie had filesystem type=ext2 $ mount | grep -e '^/dev/' /dev/sda3 on /boot type ext2 ... ... and was unable to upgrade its GRUB2 $ sudo ...
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1answer
19 views

Why shouldn't we edit grub.cfg for grub2

If you cat /boot/grub2/grub.cfg, you get the big block of text telling you DO NOT MANUALLY EDIT THIS FILE, indicating that you should instead edit files in /etc/default/ instead and then run ...
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1answer
4k views

Windows 8.1 not showing up in GRUB bootloader after installing Linux Mint 17.1 on partition

my system drives are based on these hardware parts 1: SSD 250 GB 2: HDD 1TB 3: External HDD 2TB I use my SSD for Windows 8.1 and all other related stuff, like, installing software etc. The HDD is ...
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14 views

If i install Elementary OS, will it automatically be added to the Grub menu?

I currently have Windows 7 and Linux Mint installed. When my pc starts up, it shows me the Grub menu, it shows an entry for Mint linux and the windows boot menu. I am wondering, if i was to install ...
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1answer
26 views

If i install Elementary OS, will it automatically be added to the grub menu?

I currently have Windows 7 and Linux Mint installed. When my pc starts up, it shows me the Grub menu, it shows an entry for Mint linux and the windows boot menu. I am wondering, if i was to install ...
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0answers
694 views

arch linux- error:failed to get canonical path of 'airootfs' (grub to USB installation)

I'm trying to install arch-linux for the first time. everything was OK till I tried to install "grub" boot-loader to a USB drive. I am working by the WIKI ARCH LINUX guide. both of this commands ...
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1answer
1k 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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15 views

Debian Jessie grub-install broken in some mysterious way

I did an apt-get dist-upgrade today (2016/02/01), and now my system won't boot. The only reason I can get in at all is that there's a copy of Ubuntu installed as well, and I can boot it from the ...
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30 views

Can I make grub go back to the menu when I get the cryptomount passphrase wrong?

I have GRUB 2 (EFI) booting my system, which is dual-boot between Debian 8.2 and Windows 10. The Debian system is on an encrypted partition, which is unlocked using cryptomount. This all works fine ...
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1answer
2k views

Windows 7 boot option missing after installing CentOS 7, how can I get it back?

After installing Centos7, windows 7 is not showing at the boot time. Centos 7 is accessible. My boot folder entries: [root@localhost boot]# ls -ltr total 89176 -rw-------. 1 root root 2840084 Jun ...
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3answers
3k views

Dual booting Ubuntu and Windows 8. w8 boots through grub shell, but not from menu

I have a laptop, with installations of Ubuntu 12.10, and Windows 8. Windows 8 was first installed on the system, and Ubuntu was installed afterwards. During the Ubuntu installation, the installer ...
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2answers
5k views

Dual booting Debian and Windows 8?

My problem is a little weird (maybe to me only). Specification: Lenovo, Ideapad Z510. i7 intel core. 1920x1080. ISO: GNOME Debian 7.2.0 amd64. Bootable Device: Universal USB Installer. ---Process ...
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2answers
6k views

GRUB2 and kernel vga= parameter

According to the documentation, use of the vga= kernel parameter is deprecated as of GRUB2. The fact that some newer kernels don't seem to support it anymore on certain adapters is of no concern as ...
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0answers
15 views

How to set persistent low brightness in grub2 menu?

I have a Samsung laptop with ivy bridge Intel processor and Intel HD graphics. The brightness is controlled by /sys/class/backlight/intel_backlight/brightness which accepts values from 0 to 4882. The ...
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1answer
1k views

efivars data missing from procfs and sysfs

I'm trying to install ubuntu on a Tab-X 10.1 Intel WinPad. The UEFI loader only allows booting from 32 bit efi images. Ubuntu only supports UEFI in 64 bit versions. I'm trying to get the 64 bit ...
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1answer
45 views

Grub seems to don't load its config from grub.cfg

I have a computer with 3 OS installed on it : Blinux Blinux exam Windows 7 (Blinux is a custom version of OpenSuse that we use in my school). I have recently restored my computer with the image ...
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How can I tell GRUB I want to reboot into Windows—before I reboot?

I have a dual boot Linux/windows system set up, and frequently switch from one to the other. I was thinking if I could add a menu item in one of the menus to reboot directly into windows, without ...
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1answer
24 views

Screen going to sleep and then not coming back on

Recently set up a dual boot with windows 10 and linux mint 17.3 with windows 10 on an ssd and linux mint on a internal hdd. I have an ATI 7950 Raedon video card connected via miniDP to a Dell U2715H. ...
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0answers
21 views

Minimal BASH like line editing is supported

I have Fedora 23 dual boot with Windows 10. Suddenly, I'm not able to see the normal GRUB menu to go into either Fedora or Windows. I've seen the question and answer here but I'm already stuck at ...
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2answers
159 views

No grub menu after Ubuntu install, booting directly into Ubuntu

I have two separate SSD's. One of them has Windows 10 Pro installed, and the other has Ubuntu 14.04.3 LTS. When my computer boots I get no grub menu to choose the operating system I want to boot ...
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1answer
28 views

Repair Bad Ubuntu Installation With Grub Rescue & No Changes to BIOS

I have a old Dell PP01X laptop (it has a floppy disk reader & an external wifi card) which I tried to install Ubuntu on. To do this, I partitioned the drive into 3 parts (windows, linux, and swap ...
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1answer
750 views

Grub returns File not found when booting on a new disk with Debian Jessie

I installed Debian Jessie on a new hard disk, and wanted to boot from this new disk. At the end of Debian setup, I choosed setup Grub also. But when booting, Grub falls into rescue mode with a File ...
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3answers
14k views

How to install Kali linux on to a specific (existing) partition on a USB stick

I'm endeavoring to put Kali linux onto a USB stick - I know it's already written up, but I'd like to use only a portion of the total space (the aforementioned link will use the entire drive space). ...
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3answers
20k views

GRUB-EFI installation fails while installing Kali Linux in external hard disk

I was trying to install Kali Linux from a live USB to an 1TB external hard disk. At first I was unable to boot the live USB with my H2O Insyde BIOS. Then I converted my pen drive partition table to ...
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2answers
10k views

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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1answer
773 views

Builiding a UEFI bootable USB

I'm having a really hard time getting Mint13 installed on my new laptop, no optical UEFI support and having odd corruption of grub.cfg when I do try and use unetbootin. Is there a method to build a ...
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1answer
36 views

ElementaryOS not recognized by Grub2

(The hyperlinks are pictures I took) I had Windows10 installed in my computer (which is a Lenovo Z70) and I installed ElementaryOS but Grub2 is not recognizing the OS, actually none of them. If I ...
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0answers
24 views

Keyboard doesn't work GRUB after boot on Windows

I have a Razer keyboard and a dual boot (Arch Linux + Windows 7). The keyboard works fine if I just use Arch Linux. Whenever I boot on Windows my next time on GRUB the keyboard won't work anymore. ...
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1answer
1k views

GRUB no longer can boot the machine (different error messages)

When I boot from GRUB, I get various error messages from GRUB, apparently at random : "invalid arch independent ELF magic" or "incompatible license" or "file not found". I can boot from the rescue DVD ...
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All of the sudden, grub brings me to it's minimal command interface, and doesn't boot my OS

My homeserver started doing weird things. First it was super slow, then it didn't even connect to the internet. I connected a display, and found out it was getting stuck at grub. No rescueprompt, just ...
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How can I speedup the time from boot to GRUB screen?

I have Windows 8.1 Dual booted with Arch Linux. I find it takes atleast 10 seconds from pressing the power button to showing the grub screen menu selection. I find that really strange since I ...
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25 views

GNU grub version 2.02

I have double boot running windows 8 and mint. Today when i started pc , it did not asked me which system i wanna boot but instead throw GNU GRUB Version 2.02~ beta 2-9 Minimal BASH-like line ...
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1answer
2k views

Kali linux black screen after booting

I've managed to install kali linux from USB but after I try to boot it I get only black screen (after GRUB). It works great when I run only live sesion from USB. I am using MSI GS70 2PE notebook which ...
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1answer
2k views

How to boot kali from native usb

Last night I made a kali linux usb. Now this isn't the live usb I literally installed kali on the drive. I did this from my desktop which meant naturally I had to install the grub for my boot loader. ...
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2answers
1k views

Dualboot win10/Linux Mint boots directly into win10 - doesn't show grub

So I have a dual boot setup using Windows 10 and Linux Mint 17.2 but I can't boot into Mint normally because my laptop always boots into windows without showing grub. In order to boot into Mint I ...
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24 views

Verify integrity of EFI file before chainloading

Can I, in GRUB, configure it to verify if the EFI file it is going to chainload being signed (using the Secure Boot database) and refuse to boot if not signed? I had to disable secure boot for GRUB to ...
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75 views

Minimal BASH like line editing is supported. Boot error on Fedora

I am using fedora 22 and windows 8 on my laptop. Recently I updated fedora using yum update command. When I restarted fedora, boot menu is not coming. Instead a black screen is coming with following ...