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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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