Articles about grub | UserComp.com

Linux Boots Grub - How to Fix a Broken grub.cfg

Regenerate a broken grub.cfg using update-grub or a Live USB to restore Linux booting and resolve missing kernel errors.

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Dual-booting Win11 and Artix Linux: Grub Rescue Unknown Filesystem

Fix GRUB Rescue Unknown Filesystem error in Windows 11 and Artix Linux dual-boot by reinstalling GRUB via chroot.

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How is the grub boot menu presented if the gpt looks for efi system partition

Explains how UEFI firmware loads GRUB from the EFI System Partition to present the boot menu.

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Installing GRUB for a New Custom-Created Linux OS (Yocto) on Partitioned sda

Fixes GRUB installation failures on custom Yocto Linux by ensuring correct partition mounting and virtual filesystem binding.

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Linux Breaks Windows 11 Boot: Dual Booting Debian 12 and Fixing EFI Menu Issues

Fix Windows 11 boot failure in dual-boot setups by correcting GRUB installation to the proper EFI System Partition.

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Keyboard not working in Windows or Fedora 37 but works in Grub

Resolve keyboard failure in Windows or Fedora 37 after GRUB by disabling USB selective suspend and fixing XHCI handoff conflicts.

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Dual Boot Windows 10 and Arch Linux on Lenovo T430 with GRUB

Resolve missing Windows 10 entry in GRUB menu on Lenovo T430 dual boot by regenerating grub.cfg with mounted EFI partition.

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How to reboot a system not started with systemd

Reboot a non-systemd Linux system using SysVinit commands or GRUB to prevent data corruption.

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How to Fix a Corrupted Drive or Ext4 Filesystem in Kali Linux

Fix corrupted Ext4 filesystems and restore GRUB bootloader in Kali Linux using live USB boot, fsck repair, and chroot recovery.

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Moved Grubx64.efi Version Linux Live CD Boot to Ventoy EFI Partition on Another Flash Drive: A Tech Support Guide

Resolve Linux Live CD boot failures on Ventoy by copying the ISO to the root of the Ventoy partition instead of manually moving grubx64.efi.

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Cant boot dual partition - GRUB issue

Fix GRUB boot failure in dual-partition setups by chrooting into the new Ubuntu installation and running update-grub to regenerate correct boot entries.

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How to Password Protect Grub Boot Menu in Fedora 38

Prevent unauthorized kernel parameter modification and single-user mode access in Fedora 38 by password protecting the GRUB boot menu.

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Windows Restore on Dell Precision 5490 Leaves GRUB Partition Issues with Ubuntu

Fix GRUB bootloader failure on Dell Precision 5490 after Windows restore by reinstalling GRUB via Ubuntu Live USB chroot.

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Arch - 'grub-install: error: efibootmgr failed to register the boot entry: No such file or directory'

Fixes the grub-install efibootmgr error by mounting the EFI System Partition to /boot/efi.

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Windows 11 Not Detected by GRUB: How to Fix

Fix Windows 11 not appearing in the GRUB boot menu by manually adding a custom entry to detect the EFI System Partition.

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Display Bug on UEFI, GRUB, Linux, and Plugged in Windows

Fix UEFI display bugs and black screens in dual-boot Linux and Windows by aligning GRUB framebuffer settings, disabling CSM, and turning off Windows Fast Startup.

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How to Identify and Delete Linux Boot Loader/GRUB from Non-Linux HDD

Remove orphaned GRUB boot files and firmware entries from the EFI System Partition on a non-Linux drive.

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How to Fix Minimal BASH like line editing is supported GRUB Error

Fixes the GRUB minimal BASH line editing error by manually locating partitions and restoring boot configuration.

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Recovering GRUB (EFI) for Dual Boot Windows 10: Common Issue and Specific Solutions

Restore GRUB bootloader in dual boot Windows 10 EFI by reinstalling packages and regenerating NVRAM variables.

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Windows 11 Not Detected by GRUB: Troubleshooting Guide

Resolve Windows 11 missing from GRUB by enabling os-prober and regenerating the bootloader configuration.

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Non-sense Situation and Limiting Issue When Dual Booting Ubuntu into a Windows Pre-installed HP Laptop

Resolves unbootable dual-boot issues on HP laptops by fixing Secure Boot, AHCI, and EFI partition errors.

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How to Fix Grub Issues in Windows 10

Resolve GRUB bootloader conflicts that prevent Windows 10 from starting by restoring the Master Boot Record using Windows installation media.

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How to Reconstruct EFI File to Make Windows 7 Reappear on GRUB

Fix missing Windows 7 entry in GRUB by verifying EFI files and regenerating the configuration with update-grub.

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GRUB Bootloader: Ubuntu 'Not Selecting' vs. 'Ubuntu, Linux 6.2.0-26-generic'

Fix GRUB missing Ubuntu submenu by enabling os-prober and running update-grub.

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Grub Shell Startup: Loading Ubuntu from a Hard Drive Next to Win10

Resolve GRUB shell errors in dual-boot setups by manually locating partitions and booting Ubuntu from the command line.

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Windows 10 Boot Option Not Showing in GRUB Menu: A Solution

Fix missing Windows 10 entry in GRUB menu by enabling os-prober and updating configuration.

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PXE Booting WinPE using Grub2: Failing to Load bootmgfw.efi

Resolve PXE boot failures loading bootmgfw.efi by switching Grub2 to linuxefi and initrdefi commands for UEFI compatibility.

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How to Restore GRUB in My Case? - Tech Support Guide

Restore a corrupted or overwritten GRUB bootloader to fix dual-boot failures and regain access to Linux.

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Regenerating Windows Boot Files Without Using Ableboot in EFI Dualboot System

Regenerate Windows boot files in an EFI dualboot system by manually recreating the directory structure and using bcdboot to restore functionality after GRUB corruption.

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Troubleshooting Blinking Text in initramfs: A Guide to Fixing GRUB, VGA, and Console Issues

Fix blinking text in initramfs by adjusting GRUB_GFXMODE and ensuring correct kernel modules are included.

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Dual Booting: Can I Enter Legacy BIOS Directly to Use GRUB?

Resolve dual boot issues by configuring UEFI boot order to launch GRUB instead of attempting direct Legacy BIOS entry.

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Stuck in Grub Shell after Rebooting Laptop: Arch Chroot Install Solution

Fix GRUB shell boot failure on Arch Linux by chrooting from a live USB to reinstall the bootloader and regenerate its configuration.

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How to Repair Grub with df -h Filesystem Details?

Fixes GRUB boot failures by using df -h to identify correct partitions for accurate bootloader installation in a chroot environment.

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Notebook Booting Only Sometimes: Troubleshooting Linux Boot Issues

Resolve intermittent Linux boot failures by diagnosing hardware faults, correcting BIOS settings, and repairing the GRUB bootloader.

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EFI Boot Table Entry Override Timeout with GRUB

Fixes EFI boot table entry timeout issues by allowing users to increase the GRUB menu wait time via /etc/default/grub configuration.

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How to Configure GRUB to Boot an ISO Image from an exFAT Partition

Resolve GRUB boot failures from exFAT partitions by converting the drive to FAT32, which GRUB natively supports for loading ISO images.

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Black Screen on BIOS Accessing Main Boot Directory (GRUB) with SSD and Windows HDD

Resolve black screen on BIOS access with SSD and Windows HDD by verifying physical connections, adjusting CSM and Secure Boot settings, and correcting GRUB boot priority.

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20-Second Black Screen with GRUB Menu on Dual-Boot HPLaptop (Windows 11 Ubuntu 24.04.1 LTS)

Resolve 20-second black screen delay before GRUB menu on dual-boot HP laptops by adjusting timeout settings and disabling Windows Fast Startup.

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Grub not shown on external screen after installing Arch Linux on old laptop

Fix GRUB menu not appearing on external monitors in Arch Linux by configuring video modes and BIOS display priority.

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GRUB Dual-booting Arch & Debian: Unable to Add Debian Entry

Enable GRUB OS Prober by setting GRUB_DISABLE_OS_PROBER=false and regenerating the config to detect Debian in a dual-boot setup.

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Chroot/mnt Failures While Installing GRUB: What to Do?

Resolves GRUB installation failures on raw disk images by using loopback mounting instead of chrooting into a running QEMU VM.

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Fixing Lubuntu 16.04 - Windows 10 Not Showing in GRUB Menu

Resolve Lubuntu 16.04 GRUB menu missing Windows 10 by disabling fast startup and setting GRUB_DISABLE_OS_PROBER to false.

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Unable to Boot GRUB after Upgrading PC Hardware: A Tech Support Guide

Fix GRUB boot failure after PC hardware upgrades by manually identifying partitions and reinstalling the bootloader via chroot.

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Grub Not Showing Support for Possible Video Modes on Debian 12

Fix GRUB video mode limitation on Debian 12 by enabling the framebuffer and setting a custom resolution in /etc/default/grub.

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Preserving Windows Partitions: Ubuntu Installation Fails with MBR2GPT

Resolve Ubuntu installation failures on MBR2GPT disks by fully converting to GPT and validating the partition table before installing.

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Accidentally Deleted UEFI Partition: Can't Boot Linux Mint

Recover Linux Mint boot failure after deleting the UEFI partition by recreating the EFI System Partition and reinstalling GRUB.

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Understanding the Difference: BIOS, UEFI, Bootloader, and U-Boot/GRUB

Clarifies BIOS, UEFI, and bootloader roles to help troubleshoot boot failures on x86 PCs and embedded ARM systems.

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Understanding the Loading of Modules by initramfs in Linux: User Space or Kernel Space

Clarifies that initramfs loads modules via user-space scripts using modprobe, not directly in kernel space.

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Display Bug on UEFI, Grub, Linux, and Plugged in Windows

Fix dual-boot display artifacts by disabling Windows Fast Startup, removing the nomodeset kernel parameter, and configuring UEFI settings.

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How to Disable UAS for USB Without Knowing Prior Device ID in GRUB

Disable USB Attached SCSI globally in GRUB by blacklisting the uas module to resolve compatibility issues with external drives without needing specific device IDs.

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