Western-digital T13/2132-D User Manual download pdf (Page 46)

T13/2132-D Revision 3 June 23, 2010

34 Working Draft Enhanced Disk Drive - 4 (EDD-4)

8.6 Verify Sectors (FN 04h)

This function shall be used to check the sectors in the specified range on the device for errors. No data is

transferred between the host and device by this command.

Entry

AH 04h

AL Number of sectors to verify, shall be greater than 0 and less than 128

CH Low order 8 bits of the cylinder number

Bit Description

7:6 high order 2 bits of the cylinder

5:0 sector number

DH Head number

DL BIOS device number

Exit

Carry Clear Function completed without error

AH Shall be cleared to zero

AL Number of sectors verified

Carry Set Function completed with an error

AH Shall be set to the error code

AL Vendor Specific

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 85 86

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Western-digital T13/2132-D User Manual Page 46