Questions tagged [grub]

GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use the GRUB2 tag for questions dealing with GRUB2, a rewritten version.

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Unable to boot FreeBSD 12.1 using GRUB

This is not a duplicate question to https://unix.stackexchange.com/questions/109272/add-freebsd-to-grub2-boot-menu or Cant boot FreeBSD 10.1 using grub2. Firstly I tried the mechanism suggested in ...
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Grub Rescue After Deleting Linux Partition Windows 10

I need some help for fixing grub rescue mode. I was using Windows 10 Pro on my Lenovo-Ideapad 310 laptop.I installed Ubuntu With Dual Boot And Stupidly Deleted Linux Partition. I didn’t fix mbr. Now I'...
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LUKS2 encrypt bootable UEFI USB drive - GRUB loads iso

Dears, Please help me with this: My scenario is to have a bootable UEFI USB drive what is encrypted, and once decryption password provided it loads an iso file (ubuntu live). So I presume I should ...
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Uninstall GRUB from Windows Dual Boot produces BootOrder not found error

While there are many posts regarding removing GRUB from a dual boot, and one that mentions the BootOrder not found error, none answered my specific question, so I wanted to ask here before doing ...
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Manjaro - Windows 10 dual-boot, Windows not found

I used to happily run Debian Buster and Windows 10 on dual-boot. I decided to move from Debian to Manjaro. During the Manjaro install process, I tried just using the Debian partition when the ...
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I'd like to create a kexec-able GRUB2 file, is this possible?

Back when GRUB4DOS was a thing, it was possible to kexec into its .exe. I'd like to have similar functionality for GRUB2. I did find GRUB2WIN, but that is just a regular .exe and kexec returns an ...
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GRUB slow/irresponsive when in UEFI bios mode

I have a GTX 1060 GPU, a ultrawide (21:9) 2560x1080 monitor and a MSI B-450 A PRO motherboard (bios version V10.C - 2019/11/12). Recently i've change the bootmode of my bios from CSM to UEFI. after ...
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Stuck in GRUB rescue mode with all filesystems unknown

I'm no computer expert, but I do like to play with this kind of stuff but now I'm on wit's end as I have absolutely no idea what to do anymore. I was dual booting Windows and Linux on my old notebook,...
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black screen flickering after grub menu

One time, after starting my system from sleep, it went complete black, couldn't even start a tty also and had to force shutdown. And after restarting it, the screen flickers after loading bootloader ...
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Can hardware RAID-1 be enabled on an existing Ubuntu 18.04 system?

I have an ASUS Ubuntu 18.04 system running on an M.2 drive as /dev/nvme1n1. I have added an identical M.2 drive and would like to enable hardware RAID-1 (motherboard supports it). The blank M.2 ...
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Grub isn't loading on my SSD

I have a bad problem. I have two storage devices installed on my laptop!(SSD & Hard Drive). I have installed Windows 10 lately on SSD, but now I want to install Kali Linux on my HDD. I installed ...
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grub-install hangs when rescuing a linux install via chroot

When attempting to repair a linux bootloader, grub can run into a problem. Running update-grub leaves the program hanging and never completes sucessfully.
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Grub unable to load windows: alloc magic is broken

I'm trying to boot into windows from grub, but getting an error: alloc magic is broken at 0x8d940f80: 0 Aborted. Press any key to continue On adding "set debug=chain", I also get: loader/efi/...
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Grub does not detect windows 10 efi boot files

I recently installed lubuntu on new partition, and in doing so, I formatted the efi partition to FAT32. Now I want to boot into Windows 10, but none of the usual recovery methods have worked for me - ...
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Windows only boots from GRUB2 if disk is selected to boot from in BIOS first

I'm trying to figure out how come the only way I'm able to boot into Windows is this way on my HP laptop: Open up boot menu Select disk containing Windows as the option to boot into This doesn't boot ...
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Laptop won't boot to either Ubuntu or Windows

I have an HP laptop with dual OS - Windows 10 and Ubuntu 18.4. Yesterday when I booted into windows, it wouldn't go past the 'blue screen', it shows - " your pc/ device needs to be repaired." ...
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Boot manually into Windows 7 when GRUB fails to boot?

I've just edited my hard drive partitions and must've done something wrong, because GRUB enters rescue mode on startup. Can I boot into Windows 7 with a system repair disc, or do I have to format the ...
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Can't install Windows 7 from USB (GRUB)

After 7 years of using windows 7 i decided to reinstall because it slowed down considerably. Used rufus to create a USB using the ISO that i used to install it in 2013. But now when i try to boot ...
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How to launch built in efi shell?

I have a Lenovo ThinkCenter with American MegaTrends (AMI) UEFI with UEFI shell v2.0.31 I think. From clover bootloader, there is an option to launch the shell and I'm able to enter it. However, from ...
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Dual boot 2 Android-86 based distro (Bliss OS and PrimeOS)

I try to make a dual boot Bliss OS/Prime OS, but whatever I do, there is always only one entry in the boot menu, it's Prime. What I did: I tried to install Bliss OS first, then install Prime OS on ...
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Laptop keyboard doesn't work with GRUB menu or Windows Boot Manager menu

Issue: Laptop keyboard works fine in BIOS and in Windows. But same keyboard stops responding on boot menus, after any key is pressed. When trying to boot from a USB drive, it gets stuck in GRUB. In ...
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Do bootloaders keep running?

In this question, I'm considering both Windows (BOOTMGR) and Linux (GRUB) bootloaders as well as BIOS and EFI modes. Once a bootloader has invoked a kernel, does the bootloader keep running in any ...
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Grub doesn't recognize Windows 10 partition after a auto-boot repair of Windows

The question seems duplicated, but I really convinced it isn't! My PC was unstable and I needed to remove some peripherals. Additionally, I have one SSD (with Debian 9 and Windows 10 - bootloader ...
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Windows BCD error after installing Linux distro

I installed a Linux distro alongside Windows, however for some reason the GRUB menu didn't appear and not set up properly so I repartitioned the Linux drive in Windows and used EasyBCD to try and fix ...
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How to install Debian if I have another Windows computer but don't want to format a USB stick?

I have a Windows laptop and want to install Debian on another PC. I have a 128GB USB stick I wouldn't like to format. How could I do this?
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Unable to connect to root profile or open root console in Kali Linu

I am running Kali Linux on VirtualBox. When I try to login into the root account it just does not connect. the same if I enter a non-root account and try sudo commands. I entered the grub bootloader ...
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Dual boot Windows 10 partition has become non-bootable. How can I make it bootable again?

I have a Dell Precision laptop with Windows 10 Professional on a pair of partitions on the main (MBR, 480 GB) SSD. Under linux they show as /dev/sda1 (576 MB NTFS) and /dev/sda2 (43 GB NTFS). They ...
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Installing Windows 10 alongside Ubuntu while keeping Windows 10 as isolated as possible

TLDR; I want to dual boot Windows 10 and Ubuntu, while treating Windows as the secondary OS similarly to how bootcamp does with macOS, but I'm not sure all what I have to do in the Windows side of ...
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105 views

How to install Phoenix OS from Linux?

I'm under a Linux Live session (Ubuntu with Multisystem). Phoenix OS has an .exe installer, installing it in dualboot or multiboot with Linux OS, is not as easy-peasy as with the other x86 based ...
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How to boot parabola linux from usb from grub command line?

I'm trying to boot the parabola usb drive from a grub command line. (I'm running libreboot on a X200 laptop and my grubconfig on it is a bit messed up) currently I just try to load the kernel and ...
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How to install Ubuntu 20.04 on external SSD without changing 18.04 install on SSD inside

I tried installing Ubuntu 20.04 on an external disk (erasing the disk and install with LVM and full-disk encryption). This worked excellently; but after removing the external disk and rebooting, my ...
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fixing the grub on ubuntu 14.04 LTS

I am using a laptop with Ubuntu 14.04 LTS installed on, recently I just wanted to use clonezilla and this messed grub file to boot the system, since it is giving only the way to boot from clonezilla ...
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Dual-boot windows 7 + linux black screen during boot

Currently I am encountering an issue with my dual-boot (Windows 7/Fedora) Dell laptop. Few days ago when i was doing some works using Fedora, the system was suddenly frozen. From then, when I turn on ...
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1answer
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UEFI cannot launch grub after deleting linux partition

I had set a multi partition system with ubuntu, kali and windows 10 and when i deleted both the linux distros and restarted my PC it booted into grub rescue mode (unknown filesystem). If I hit up F12 ...
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1answer
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Locked out of Windows 10 for 30 days due to Linux Dual Boot Install

I installed Ubuntu for dual boot on my Windows 10 PC. However, as many people mentioned in similar questions, I have a Bitlocker recovery key prompt when I try to load Windows from the grub menu. 1)...
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516 views

How to boot Windows from Clover UEFI shell

How to boot Windows from Clover UEFI shell. I don't have access to anything but it. When I normally boot it gives error : unknown file system entering rescue mode grub rescue>_ May be that's ...
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How to load MacOS from an APFS partition using GRUB2?

This is a Apple machine, not a Hackintosh. Before Apple switched to APFS, you could put this inside a menu entry in GRUB: set root=(your OS X partition) chainloader /System/Library/CoreServices/boot....
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Fix unknown file system grub rescue> error

When I boot normally, after the bios screen it shows error : unknown file system entering rescue mode... grub rescue>_ I think it's because, I deleted the Linux(which I used to dual boot) ...
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LUKS full disk encryptation + USB key

I go this setup working, but when the USB key is not present, Grub shows the message: Keyfile could not be opened, reverting to passphrase I don't want it to give the user this possibility, I want ...
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PC boots on second try without pushing the power button

It started a year ago, when I click the power button, the BIOS logo (manufacturer) appears, then pc turns off, after a second it turns on again, this time it boots normally. Tried to search for the ...
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Fix GRUB rescue unknown file error after deleting Ubuntu Partition without a live media

I've fallen in a great problem. I've deleted my Ubuntu Linux partition from my dual booted Windows 10 System and also have extended another Volume with that free space. Now after restarting my system ...
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Fedora boots up without showing other GRUB boot options

Until recently I had Ubuntu 18.04 and Windows 10 installed with Rufus. I decided to uninstall Ubuntu and install Fedora with a Yumi multiboot USB. I installed Fedora, and when I turn on the computer ...
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28 views

Why does Windows 7 appear in the Windows boot menu after being deleted?

Back when Microsoft was offering free upgrades to Windows 10 for Windows 7 users, I installed Windows 10 on a separate partition, but I kept Windows 7 around in case I didn't like Windows 10. I was ...
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1answer
148 views

Stuck with grub rescue and can't enter in BIOS

I have dual boot with Windows 10 and Ubuntu and I've deleted Ubuntu and now I'm stuck with error: no such partition. Entering rescue mode... grub rescue> I read that I have to enter in BIOS ...
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How do I edit /etc/runit/1 without logging in?

I made the mistake of autostarting syncthing with runit and now I can't login. (I added "syncthing to /etc/runit/1".) Initially, I rebooted normally to syncthing starting, but from there I could not ...
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How to expand partition and avoid erasing boot loader

I would like the help of someone more experienced to expand the partition where my Manjaro is installed. That's how it looks like currently: I have three OSs installed: Windows, Manjaro and PopOS. I ...
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Grub balked during apt update due to gpt partitioning scheme

This machine has been neglected for about a year, just quietly sitting in the corner serving as dns/dhcp/nas for the local network. It has only one OS installed, which is debian. Long story short, i ...
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1answer
149 views

GRUB Bootloader with root LUKS encryption: Only grub shell

I would appreciate help and hints to solve a problem with the GRUB bootloader. I have a system with root LUKS encryption. Means that except the partition with the bootloader, the whole system is in ...
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153 views

Cannot install Windows 10 from USB stick - issue with GRUB?

I have followed the instructions here and created a bootable Windows 10 USB stick, but when I try to run the installation the system keeps booting into the GRUB 2.0 bootloader. Unfortunately, I have ...
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Encrypted Disk, Stuck At GRUB Command Line

While I am trying to install Kali Linux to a USB drive, I can't install GRUB. I get the error grub-install dummy failed. As I said in the title, my disk is LUKS encrypted and has a /boot partition. So ...

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