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

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What's the difference between `grubx64.efi`and `gcdx64.efi`

CentOS7 package grub2-efi provides two files that are very similar. -rwxr-xr-x 1 root root 1070976 Mar 26 09:27 ./boot/efi/EFI/centos/gcdx64.efi -rwxr-xr-x 1 root root 1070976 Mar 26 09:27 ...
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3answers
739 views

Check installed grub2 modules

I run CentOS 7. Is there a way (e.g., a command) to check which grub2 modules are currently installed?
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1answer
471 views

GParted Live on Hard Disk with Ubuntu

Edit Please note that I fixed the original problem of not booting, but I still can't get it to run X-windows after being prompted for language, input, and display resolution. Original question I read ...
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1answer
1k views

Problems in using GRUB2 - Manjaro

I hope you are well! I use Manjaro x64_86, using GRUB2 and EFI. I made a large error after coming home from a night shift. I accidentally removed my boot partition when attempting to format an ...
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1answer
179 views

Convert Grub2 entry to Syslinux

I have been trying to do it for hours now, but so far I was unable to. I have a USB stick with grub4dos on sda1 (vfat), /boot syslinux on sda3 (ext2) and root on sda2 (btrfs). ext2 with syslinux is ...
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0answers
310 views

Grub is unable to find physical volume with Windows 7, in dual boot with Archlinux. LDM problem?

When I boot my system I get into the nice menu with Arch-linux, its settings and windows vista (loader) as possibilities. Windows fails to boot when selected with a message identical to the output of ...
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0answers
94 views

Grub2 don't see my second HDD

When the new distro is installed it makes grub2 boot menu, but it does not consider my second HDD where I have Windows7. So I tried to edit grubs cfg file but with no success. Also tried to insert ...
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1answer
187 views

How to install a Linux system without affecting previous GRUB?

I have a Linux system for current use and a few other partitions to test different other distros. But the way I install these systems, which is always the same, leads to the GRUB boot list being ...
2
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1answer
845 views

Unable to boot after installing grub for new Arch Linux Install on Acer S7

I have followed the instructions on the Arch Linux beginner's guide to do a dual boot on an Acer S7-392. I only did not do the initramfs part and I did not create the partitions at the install since I ...
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0answers
18 views

dracut md5sum boot directory

This has been going on for a few months now, but my initramfs (and kernel) for that matter have been placed in /boot/{some hash}/{kernel version}/{initramfs,linux}. Did dracut or some other module ...
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0answers
250 views

How to stop grub from messing with my EFI partition?

I'm dual booting Windows 8.1 and Linux Mint. I decided to install the Linux Mint OS (Rebecca) onto an EXTERNAL HDD. So what I did was click "Something Else" during installation and I created 3 ...
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3answers
4k views

After reinstalling Linux Mint, Windows 7 does not boot

Final edit: I tried each and every single fix on the question, but I ended up just restoring an image I made a year ago of the freshly installed system using clonezilla. After that, I ran rescatux to ...
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1answer
3k views

Can't boot to Kali Linux [duplicate]

I have installed the operating system successfully on my laptop that has Windows 8.1 pre-installed. (With this guide) After restarting the computer, Windows 8.1 loaded instead of grub bootloader, so ...
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1answer
3k 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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0answers
177 views

grub2 lvm2 raid1 /boot

Is it possible to boot from a system where /boot is located within an lvm2 raid1 partition. I've tried a variety of configurations, but I have yet to discover how to do it. I am using two 2TB disks. ...
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1answer
68 views

How to restore RAID5 Array

I have a RAID5 array consisting of 3 identical 2TB drives. Suddenly GRUB wouldn't boot anymore and gave the error out of disk. Eventually booted a livecd and ran some mdadm commands: mdadm --examine ...
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0answers
57 views

can I use vmlinux instead of vmlinuz with GRUB2 (Fedora)?

Can I use vmlinux instead of vmlinuz with GRUB2 (Fedora)? I've seen this: Can vmlinux be used instead of uImage? but it speaks of U-Boot, not GRUB2.
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83 views

Configure where GRUB2 environment block is located

I have Arch, Ubuntu, and GRUB2 installed on a BTRFS filesystem. I'm aware that GRUB cannot write to BTRFS for a variety of good reasons, and therefore cannot save environment variables to ...
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0answers
106 views

Ubuntu Grub recognises MacOS but cannot boot up

I tried a little experiment on installing MacOS on a non Mac Hardware Laptop... Got this far as to put the MacOS Install ISO on to an HFS+ partition but the machine needs to boot this up for the ...
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1answer
489 views

Where isoboot, boot=isolinux iso-scan/filename parameters are documented?

I see example (in dracut docs) linux (loop)/isolinux/vmlinuz0 boot=isolinux iso-scan/filename=$isofile root=live:LABEL=$isolabel ro rd.live.image these texts: ...
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2answers
749 views

Installing other Linux in an encrypted disk

I recently got an SSD to replace my laptop's HDD and decided to change and use "full disk" encryption. I created a small unencrypted partition for /boot and an big encrypted LUKS partition where I ...
2
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1answer
826 views

Grub with retina displays (high resolution)

I currently use Ubuntu on my macbook pro with grub. My macbook has a retina display with 2560x1600 resolution. The grub startup screen font is so tiny that it is barely readable. How can I make grub ...
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1answer
566 views

Gentoo: grub2 with efi [Solved]

I have a strange problem about loading with grub2 and efi on gentoo. Maybe I've missed something, but I'm trying to do this: # mkdir /media/gentoo # mount /dev/sda8 /media/gentoo/ # mount -t proc ...
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0answers
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Problem dual booting windows 8 and ubuntu 14.04

I had windows 8 for like 12 months Yesterday I choose to install ubuntu 14.04. On windows 8 I had 2 partitions C(where windows was installed) and D(other ntfs partition). I shrunk D with 50 GB then I ...
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2answers
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Multiple boot: Windows-10 along Linux?

On a computer running for the long term Linux Mint 17 Xfce (ubuntu 14.04) along Windows 7 I have created another two separate partitions with the purpose of installing for the short term other systems ...
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1answer
1k views

Can Grub2 multi-boot LUKS/LVM distros with only one boot partition?

There are many tutorials on the internet for multi-booting unencrypted distros using a single boot partition and chainloading. For example, booting 145 OSes. Likewise, there are tutorials for ...
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1answer
204 views

Initialise USB devices before hard disks during grub2 boot

I have a CentOS installation on a portable USB stick, with a grub2 installation on it's first partition. The system can boot when there are no internal hard drives plugged into a machine, but fails if ...
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2answers
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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1answer
767 views

How to generate grub.cfg for different disk?

I have 2 disks: 1-st disk contains base operating system (/dev/sda with many partitions and OSes) 2-nd disc should be setup (/dev/sdb1=/boot,/dev/sdb2=/) I have grub2 package installed in the base ...
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1answer
607 views

How to change grub black screen

I'm using dual boot Linux Mint 17.1 Cinnamon and Windows XP. So I want change grub2 black screen and I've tried to install gfxmenu theme for grub but it is not working; I see it's not installed in ...
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1answer
48 views

How can I generate two Grub2 entries for each kernel?

Due to bugs in my laptop's BIOS (or some such thing), I use the boot flag nox2apic when I know I need to attach an external monitor. However, when this flag is enabled, pressing some multimedia ...
2
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1answer
384 views

how /etc/grub.d/41_custom is supposed to work?

I am asking, because fragment of file /boot/grub/grub.cfg looks like ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif ...
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0answers
84 views

Is it possible to use “submenu” command in grub2 embedded config?

I want to enumerate all partitions of my hard drive, and include /boot/grub/grub.cfg file from each partition as a submenu. And I want to do this in embedded config file. This way all partitions will ...
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1answer
409 views

Kali Linux Live (Try before installation) won't install GRUB or LILO

I want to install Kali Linux but the original installation makes my PC hot. I use cpufreq-selector -f 1000000 to cool down my PC, but when I use the live option, GRUB or LILO won't install. Do I have ...
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3answers
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Need to reinstall GRUB2, but it requires me to boot into unbootable system!

I had Window 8 and Linux Mint. Mint broke and I installed Antergos. Now I lost GRUB completely and I have to use Windows Boot Manager to boot into Windows. So I used Boot Repair CD to try to fix that, ...
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2answers
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Is my server still using a grub-legacy (GRUB 1) MBR?

When Debian updated to GRUB 2 (package grub-pc), it didn't automatically upgrade the MBR. Instead it configured the old GRUB 1 installation so that it will chainload GRUB 2; that way administrators ...
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1answer
531 views

Start server after stuck at GRUB

I currently have Ubuntu Server 14.04 and sometimes when I reboot it gets stuck on grub selection without countdown. It is the same problem as here, but I want to fix it remotely because I am not home ...
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1answer
2k views

Fix grub v2 bootloader configuration on running debian

We have a server running Debian Wheezy. It is connected to a UPS, that's why it basically never went down for years and we never noticed that the grub v2 bootloader could not load the correct kernel ...
2
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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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1answer
732 views

rebuilding my grub2 menu based on my one installed kernel

tl;dr : I have one kernel now on fedora and want that ONLY with Windows 8 to show up on my boot menu. I've been tweaking and geeking with linux kernels. Then I wanted to clean up my boot menu. So ...
13
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1answer
2k views

mistakenly deleted /boot folder and rebooted

I mistakenly deleted the /boot folder from my filesystem, rebooted, and all I get now is this: error: file '/boot/grub/i368-pc/linux.mod' not found. grub rescue>
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1answer
165 views

How to delete temp folders created for live booting?

I have followed this document for live USB creations for opensuse13.2, https://wiki.archlinux.org/index.php/USB_flash_installation_media. Accidentally, i have used sd instead of sdx, hence it created ...
6
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1answer
4k views

Grub-install: embedding is not possible in Bios/GPT

I am struggling with setting up an encrypted NAS for some days now. The basic plan is to have btrfs on lvm on luks on raid1 with lvmcache in writeback mode thrown in for the root partition to reduce ...
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0answers
17 views

How Do I Replicate Current Grub2 Install?

I've installed Linux in the past alongside Windows 8.1, and I've had problems. I tried several times until I got Grub2 to be installed correctly and display Linux and Windows 8. My Linux Mint Debian ...
2
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1answer
2k views

Path `/boot/grub' is not readable by GRUB on boot. Installation is impossible. Aborting

Whenever I try updating grub, I get this error: # grub-install /dev/sda Path `/boot/grub' is not readable by GRUB on boot. Installation is impossible. Aborting. and # grub-mkconfig -o ...
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1answer
213 views

Grub Installed On Hard Drive after ElementaryOS Install on USB?

This is my situation: I put the ElementaryOS iso on a 16gb USB I installed ElementaryOS on another 32gb USB via the installation process When the 32gb USB is not in, the machine goes to grub rescue. ...
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3answers
3k views

What file system should a GRUB 2 boot partition use?

I want to install GRUB 2 to its own, comparatively small (500 MB), partition. Are there any requirements on what file system type it has to be? Are there any that, although possible, are not ...
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1answer
322 views

new motherboard, old disk: “Gave up waiting for root device”, dropping to initramfs; grub reinstallation doesn't help

I want to use a new motherboard with an old disk. The disk has just one partition, with Debian/jessie installed. On booting, Debian is found and begins to start up with usual dmesg output lines. After ...
10
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2answers
16k views

“warning: File system `ext2' doesn't support embedding.” but my system isn't embedded either, why is grub trying?

I'm reading myself for the release of Jessie on Debian, so I'm extra cautious (should be said paranoid) about any message that can cause problems, namely warnings. My system is a desktop with Debian ...
2
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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/ ...