FUJITSU Disk Drives MHJ2181AT - Manual (Page 97)

Interface
5-24 C141-E088-01EN
If an error occurs during multiple sector write operation, the write operation is
terminated at the sector where the error occured. Command block registers
contain the cylinder, the head, the sector addresses (in the CHS mode) or the
logical block address (in the LBA mode) of the sector where the error occurred.
Then the host can read the command block registers to determine what error has
occurred and on which sector the error has occurred.
At command issuance (I/O registers setting contents)
1F7
H
(CM) 0 0 1 1 0 0 0 R
1F6
H
(DH)
×
L
×
DV Start head No. /LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
Start cylinder No. [MSB] / LBA
Start cylinder No. [LSB] / LBA
Start sector No. / LBA [LSB]
Transfer sector count
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST) Status information
1F6
H
(DH)
×
L
×
DV End head No. /LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
End cylinder No. [MSB] / LBA
End cylinder No. [LSB] / LBA
End sector No. / LBA [LSB]
00 (*1)
Error information
*1 If the command is terminated due to an error, the remaining number of
sectors of which data was not transferred is set in this register.