Installation
3-8
Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT
(3)/7*+
For user capacities below 66,055,248 sectors (32GB), inserting the AC jumper limits
the Number of Cylinders field 1 to a value of 16,383, as reported in IDENTIFY
DEVICE data word. This allows software drivers to determine that the actual
capacity is larger than indicated by the maximum CHS, requiring LBA addressing to
use the full capacity.
A summary of these effects for the Maxtor D740X-6L drives is shown in the
following table:
AT Connector and Jumper Location
AC JUMPER OUT
AC JUMPER IN
20GB
C=16,383
H=16
S=63
LBA=40,132,503
C=4,092
H=16
S=63
LBA=39,876,479
40GB
C=16,383
H=16
S=63
LBA=78,177,792
C=16,383
H=16
S=63
LBA=66,055,247
60GB
C=16,383
H=16
S=63
LBA=117,266,688
C=16,383
H=16
S=63
LBA=66,055,247
80GB
C=16,383
H=16
S=63
LBA=156,355,584
C=16,383
H=16
S=63
LBA= 66,055,247
Summary of Contents for D740X-6L 20.0 AT
Page 1: ......
Page 10: ...Table of Contents ii Maxtor D540X 4K 20 0 40 0 60 0 80 0GB AT...
Page 14: ...About This Manual 1 4 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...
Page 18: ...General Description 2 4 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...
Page 38: ...Installation 3 20 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...
Page 66: ...Basic Principles of Operation 5 17 MaxtorD740X 6L 20 0 40 0 60 0 80 0GB AT...
Page 88: ...ATA Bus Interface and ATA Commands 6 22 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...
