Hard Drive: SEAGATE: ST91430AG MARATHON 1449MB 2.5"/SSL ATA2 FAST
S T 9 1 4 3 0 A G M A R A T H O N SEAGATE
Native| Translation
------+-----+-----+-----
Form 2.5"/SUPERSLIMLINE Cylinders | 2808| 702| 1024
Capacity form/unform 1449/ MB Heads 6| 16| 64| 16
Seek time / track / ms Sector/track | 63| 63| 63
Controller IDE / ATA2 FAST/ENHA Precompensation
Cache/Buffer 103 KB SEGMENTED Landing Zone
Data transfer rate 7.600 MB/S int Bytes/Sector 512
16.600 MB/S ext PIO4
Recording method PRML 16/17,ZBR operating | non-operating
-------------+--------------
Supply voltage 5 V Temperature *C |
Power: sleep 0.1 W Humidity % |
standby 0.3 W Altitude km |
idle 0.9 W Shock g |
seek 2.2 W Rotation RPM 4508
read/write W Acoustic dBA
spin-up W ECC Bit
MTBF h 300000
Warranty Month
Lift/Lock/Park YES Certificates
Layout
SEAGATE ST91430AG JUMPER SETTING
+---------------------------------------------------------+
| |XX
| |XX 44-pin
| |XX I
| |XX N
| |XX T
| |XX E
| |*X R
| |XX F
| |XX A
| |XX C
| |XX E
| |XX1
| |+-+
+---------------------------------------------------------++-+
Master/
Slave
Jumpers
SEAGATE ST91430AG JUMPER SETTING
+- 44-pin I/O Connector
| 3o o1
:::::::::::: ::::::::1 4o o2
-P-W-A-----------+------------------
| | |
pin-20 removed for keying ---------------+ | |
| |
+- PCBAs #23969-xxx (older, less common): | |
| Drive is Master, no Slave drive present -------------- 0 0
| Drive is Master, Seagate Slave drive present --------- 1 0
| Drive is Slave to another Seagate 2.5" Master -------- 0 1
| Cable Select ----------------------------------------- 1 1
|
+- PCBAs #24736-xxx and 300222-xxx (newer, most common):
| Drive is Master, Slave drive may be detected --------- 0 0
| using the DASP- signal
| Drive is Slave --------------------------------------- 0 1
| Cable Select (horizontal jumper pins 2-4) -------------XXX
|
+- Note: Master and Slave settings are the same on either PCBA
style. The Cable Select option is different.
* Drive uses +5vdc power supplied to the drive
via the interface connector. The drive does
NOT make use of a +12vdc power line.
pin-41 +5vdc (Logic)
pin-42 +5vdc (Motor)
pin-43 Ground
pin-44 Reserved
Install
SEAGATE ST91430AG JUMPER SETTING
Notes on installation
=====================
Installation direction
----------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
| |
| |
+-----------------+
The drive will operate in all axis (6 directions).
General
SEAGATE ST91430AG
Possible translations:
This translation is generally acceptable, as
is, for non-DOS operating systems:
2808 cyl, 16 heads, 63 sectors = 1,449,197,568
DOS operating systems may require a translation
that uses larger values for the CMOS head
parameter which lowers cylinders below 1024:
702 cyl, 64 heads, 63 sectors = 1,449,197,568
Other FULL-CAPACITY solutions for DOS operating
systems include third-party drive preparation
software, system BIOS which supports LBA mode
or bios driven host adapters. Otherwise,
capacity may be limited to:
1024 cyl, 16 heads, 63 sectors = 528,482,304
Note: A "custom" or "user-definded" CMOS drivetype may ask for a
numerical value for the Write Precompensation cylinder and for the
Landing Zone cylinder.
A basic rule-of-thumb for drive models that do not require the old
Write Precomp technique or a Landing Zone because they are Auto-
Parking is to add 1 to the cylinder value being used. As an example:
If cylinders equaled 820, then both Write Precomp and Landing
Zone would be entered as 821. Some BIOS will convert this to 65535
or -1, which are functionally equivalent to "none (not used)".
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