INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (ATIBM PC AT model 3x9,XT2IBM PC XT 2,XT286IBM PC XT/286,PSIBM PS/2, any model) AH = 18h DL = drive number CH = lower 8 bits of highest cylinder number (number of cylinders - 1) CL = sectors per track (bits 0-5) top 2 bits of highest cylinder number (bits 6,7) Return: AH = status 00h requested combination supported 01h function not available 0Ch not supported or drive type unknown 80h there is no disk in the drive ES:DI -> 11-byte parameter table (see #01264 at INT 1E) Note: this function does not set the INT 1E vector to point at the returned parameter table; it is the caller's responsibility to do so SeeAlso: AH=05h,AH=07h,AH=17h,INT 1E