BootX (Apple)

BootX is a software-based bootloader designed and developed by Apple Inc. for use on the company's Macintosh (now Mac) computer range. BootX is used to prepare the computer for use, by loading all required device drivers and then starting-up Mac OS X by booting the kernel on all PowerPC Macs running Mac OS X.

The Intel-based Macs introduced in 2006 have a Unified Extensible Firmware Interface (UEFI) ROM, and use a UEFI-based bootloader named boot.efi rather than BootX.

The program is freely available as part of the Darwinoperating system under the open-sourceApple Public Source License.