INT 13h, 00h Reset disk system
INT 13h, 01h Status of disk system
INT 13h, 02h Read sectors into memory
INT 13h, 03h Write sectors from memory
INT 13h, 04h Verify sectors
INT 13h, 05h Format track
INT 13h, 06h Format track and set bad sector flags (XT,port)
INT 13h, 07h Format drive starting at given track (XT,port)
INT 13h, 08h Get current drive parameters (XT,AT,XT286,conv,PS)
INT 13h, 09h Initialize two fixed disk base tables (XT,AT,XT286,PS)
INT 13h, 0Ah Read long (XT,AT,XT286,PS)
INT 13h, 0Bh Write long (XT,AT,XT286,PS)
INT 13h, 0Ch Seek to cylinder (XT,AT,XT286,PS)
INT 13h, 0Dh Alternate disk reset (XT,port,AT,XT286,PS)
INT 13h, 0Eh Read sector buffer (XT,port,PS)
INT 13h, 0Fh Write sector buffer (XT,port,PS)
INT 13h, 10h Test for drive ready (XT,AT,XT286,PS)
INT 13h, 11h Recalibrate drive (XT,PORT,AT,XT286,PS)
INT 13h, 12h Controler ram diagnostic (XT,PORT,PS)
INT 13h, 13h DRIVE DIAGNOSTIC (XT,PORT,PS)
INT 13h, 14h CONTROLLER DIAGNOSTICS (XT,PORT,AT,XT286,PS)
INT 13h, 15h Get type (AT,XT2,XT286,CONV,PS)
INT 13h, 16h Change of disk status (AT,XT2,XT286,CONV,PS)
INT 13h, 17h Set type (AT,XT2,XT286,CONV,PS)
INT 13h, 18h Set media type for format (AT model 3x9,XT2,XT286,PS)
INT 13h, 19h Park heads (XT286,PS)
INT 13h, 1Ah ESDI FIXED DISK - Format unit (ps)
INT 13h, 1Bh - ESDI FIXED DISK - Get manufacturing header
INT 13h, 1C0Ah - ESDI FIXED DISK - Get device configuration
INT 13h, 1C0Bh - ESDI FIXED DISK - Get adapter configuration
INT 13h, 1C0Ch - ESDI FIXED DISK - Get pos information
INT 13h, 1C0Eh - ESDI FIXED DISK - Translate rba to aba
INT 13h, 1Dh - IBMCACHE.SYS - Cache status
INT 13h, 20h - DISK - ??? (western digital "super bios")