Internally, ACPI uses the instruction list (“methods”) provided by the system firmware ( UEFI or BIOS), which the kernel parses, to notify the operating system kernel of the available components and their functions. This specification is essential for the Operating System-directed configuration and Power Management (OSPM) system, an ACPI implementation that can remove device management responsibilities from the old firmware interface through the UI. In contrast to previous BIOS-centric systems where platform-specific firmware determines power management and configuration policies, ACPI places power management under the control of the operating system. In a computer, the operating system can utilize an open standard offered by ACPI to find and configure computer hardware components to perform power management and status monitoring.
It is the abbreviation of Advanced Configuration and Power Interface. Tip: If your computer cannot access BIOS, then you can go to the MiniTool website to find solutions.
