A method and a system for reserving a device for a system are provided herein. The method includes accessing a reserved device, where a basic input/output system (BIOS) uses the reserved device. The method includes initializing a register, via the BIOS firmware, to disable a port that connects to the reserved device. The method includes disabling the port that connects to the reserved device. The disabling may occur before the BIOS firmware transfers control of the system to an operating system. The disabling may hide the reserved device from the operating system and reserve the reserved device for the BIOS firmware without interference from the operating system.