HackBGRT is an acronym for "Hack oot G raphics R esource T able". The BGRT is a standard UEFI table that allows the firmware to advertise a boot image.
: When you turn on your PC, the motherboard initializes HackBGRT first. The tool hooks into the boot environment, dynamically overwrites the BGRT image data in the system RAM with your custom image, and immediately hands off control to the standard Windows Boot Manager. Prerequisites and Risk Warnings
: The replacement logo must be a 24-bit BMP file, traditionally named splash.bmp . Installation Steps
Note: As with any tool that modifies boot-level components, ensure you understand how to navigate your UEFI settings before proceeding. Hackbgrt-1.5.1
Before you begin (safety checklist)
is a specialized, open-source UEFI utility developed by Metabolix that allows users to change the default Windows boot logo. When a computer boots up on a modern Unified Extensible Firmware Interface (UEFI) system, Windows fetches the vendor-defined logo (such as Dell, HP, Lenovo, or ASUS) from a section in the motherboard's ACPI tables called the Boot Graphics Resource Table (BGRT) . Under normal circumstances, altering this image permanently is difficult and dangerous because it requires flashing the motherboard's BIOS. HackBGRT bypasses this issue entirely. It injects a custom UEFI application into the boot path, temporarily overwriting the BGRT image in the computer's volatile memory every single time the system starts.
The most common user base. macOS is particularly sensitive to BGRT quality. A pixelated Apple logo during boot ruins the "real Mac" illusion. Hackbgrt-1.5.1 lets Hackintosh users display a perfect, retina-quality Apple logo. HackBGRT is an acronym for "Hack oot G
Your Windows installation must be running in UEFI mode (not Legacy/BIOS).
The system will restore the default boot manager settings on the next restart.
On modern UEFI-based computers, the boot logo (often the manufacturer's logo like HP, Dell, or Lenovo) is stored in the Boot Graphics Resource Table (BGRT) The tool hooks into the boot environment, dynamically
BGRT is a UEFI feature (introduced with ACPI 5.0) that stores a bitmap of the boot logo in memory. During early boot, the kernel or bootloader can display this logo, creating a seamless transition from firmware to OS.
The utility is incredibly lightweight. It modifies the UEFI environment to replace that dull boot logo with a custom image of your choice. In version 1.5.1, the interface is straightforward—no messy command-line gymnastics are required to get a basic setup running.