mbrOverriter A simple MBR overriter (for windows) written in C Building If you changed boot.asm, remake main.c with get ready.py: # Edit boot.asm nano boot.asm # Remake main.c python "get ready.py" # Compile cl main.c You can also compile with tcc Testing Safely You can use qemu to test it: qemu-system-x86_64.exe -hda bootpatched.bin You can also test it on anyrun https://app.any.run/tasks/794acb0f-ce84-47d6-8af9-bca9c8c69f33/ What is does: 1. If debug mode is on, it will display a warning. 2. It will check if it was run as administrator. 3. Open \\\\.\\PhysicalDrive0 (where the mbr is stored) 4. Write the boot file to the mbr (The boot file is inlined with get ready.py. It is not needed to run.) 5. Bluescreen the computer For the future Nothing right non but I will try to fix any issues.