Appendix B: BIOS POST Checkpoint Codes B-7 Checkpoint Code Description A9h Returned from adaptor ROM at E000h control. Performing any initialization required after the E000 option ROM had control next. Aah Initialization after E000 option ROM control has completed. Displaying the system confi guration next. Abh Uncompressing the DMI data and executing DMI POST initialization next. B0h The system confi guration is displayed. B1h Copying any code to specifi c areas. 00h Code copying to specifi c areas is done. Passing control to INT 19h boot loader next.