INT 13 - SWBIOS - INSTALLATION CHECK AH = F9h DL = drive number (80h,81h) Return: CF clear DX = configuration word bit 15 set if other SWBIOS extensions available CF set on error Program: SWBIOS is a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. by Ontrack Computer Systems XBIOS is a driver in some versions of Disk Manager that is loaded from the disk MBR, replacing the ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. disk support eg adding LBA mode support, and read/write multiple. Note: Disk Manager also supports these calls SeeAlso: AH=EEh,AX=E000h"XBIOS",AH=FFh"EZ-Drive" Index: Disk Manager