A method, system, and computer-readable medium for expediting initialization of a computing system are provided. According to one aspect of the invention, a computer-readable medium is provided having computer executable instructions stored thereon, which when executed by a computer, cause the computer to cache a portion of a firmware to a cache prior to initialization of a main memory. In particular, the computer-executable instructions cause the central processing unit of the computer to cache a range of memory addresses corresponding to the location of the portion of the firmware stored in a computer storage media to the cache prior to the initialization of the main memory. The firmware may be a BIOS and/or EFI firmware. The computer-executable instructions then cause the computer to execute the portion of the firmware from the cache until the main memory is initialized. The portion of the firmware cached to the cache and executed form the cache until the main memory is initialized may be a boot block portion of the firmware that performs a Power-On Self Test.