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June 23, 2010 T13/2132-D Revision 3
Working Draft Enhanced Disk Drive - 4 (EDD-4) 45
8.17 Verify Sectors (FN 44h)
This function verifies sectors without transferring data between the device and system memory. When an error is
reported the block count field of the device address packet shall be filled in with the number of blocks verified
before the error occurred.
Entry
AH 44h
DL BIOS device number
DS:SI Pointer to Device Address Packet (see table 9)
Exit
Carry Clear Function completed without error
AH Shall be cleared to zero
Carry Set Function completed with an error
AH Shall be set to the error code