Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
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Int 13h Function 0Fh
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  Interrupt:   13h     Function:   0Fh
 
  Title:       Write Sector Buffer
 
  Description:                                                      [PC]
 
     Transfers data from system memory to the fixed disk adapter's
     internal sector buffer. No data is written to the physical disk
     drive.
 
     Input                                Output
 
     AH = 0Fh                             If function successful
     ES:BX = segment:offset of buffer       Carry flag: clear
 
                                          If function unsuccessful
                                            Carry flag: set
                                            AH = Status
                                                 See: Int 13h Function 01h
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