APM is a set of programs that control the Advanced Power Management system found in most modern laptop computers
ACPI establishes industry-standard interfaces enabling OS-directed configuration, power management, and thermal management of mobile, desktop, and server platforms.
Enable or disable support for the hard disk’s S.M.A.R.T. (Self Monitoring Analysis And Reporting Technology) capability. S.M.A.R.T. is supported by all current hard disks and allows the early prediction and warning of impending hard disk failures.
IDE: Compatibility mode disables AHCI support.
AHCI: Supports advanced SATA features such as Native Command Queuing.
RAID: Allows multiple drives to be merged into larger volumes for increased performance and/or reliability. Always enables AHCI.
Warning: operating system may not boot if this setting is changed after the operating system installation.