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- . .
- . Ontrack Computer Systems provides this reference as a .
- . service to assist users with their hard disk installation. .
- . .
- . .................................................. .
- . :: PLEASE, :: .
- . :: :: .
- . :: CONTACT YOUR HARDWARE VENDOR OR MANUFACTURER :: .
- . :: :: .
- . :: IF YOU HAVE HARDWARE DIFFICULTIES :: .
- . ::..............................................:: .
- . .
- . . For information on DISK MANAGER and specific computers, please .
- . check the DM.REF and README files on the DISK MANAGER diskette. .
- . .
- . . For a printed copy of this, or any other reference file, .
- . insert the DISK MANAGER diskette in drive A: and type .
- . .
- . COPY HARDWARE.REF PRN .
- . .
- . or replace HARDWARE.REF with the name of the file you want to print. .
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
-
-
- This file describes the general rules for installing one or two
- internally mounted hard disk drives in a PC or AT environment. Any
- instructions provided by your dealer will supersede the information
- provided here.
-
-
- The four connections on the disk drive are:
-
- (A) Power (4-conductor), 1 per disk drive.
- (B) Command (34-conductor ribbon cable), 1 per 2 disk drives.
- (C) Drive select jumper pins, 4 to 8 pair per 1 disk drive.
- (D) Data (22-conductor ribbon cable), 1 per disk drive.
-
- Refer to connections (A), (B), (C), (D) in the drawings provided below.
-
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- Page 1
-
-
- __________________________________________________________________
- | |
- | H H H DDDD D DD |
- | H H H D D D |
- | H H HHH H HHH H D D DD DDDD D D |
- | HHHHH H HH H HHHH D D D D D D |
- | H H HHHH H H H H D D D DDD DDD |
- | H H H H H H H D D D D D D |
- | H H HHH H HHH HHH H DDDD DDD DDDD DD D |
- / /
-
- / .------------------------------------------------. /
- | :NOTE: The connectors shown here may be found in : |
- | : different locations on your disk drive. : |
- | '------------------------------------------------' |
- | |
- | |
- | |
- | AA BBBBBB CCCC DDDDDD |
- | AAAA BB BB CC CC DD DD |
- | AA AA BB BB CC DD DD |
- | AA AA BBBBB CC DD DD |
- | AAAAAA BB BB CC DD DD |
- | AA AA BB BB CC CC DD DD |
- | AA AA BBBBBB CCCC DDDDDD |
- | |
- | Power Command Cable Drive Select Pins Data Cable |
- |__________________________________________________________________|
- | 0 0 0 0 | | | | | | | | | | | | | | | | X | | | | | | |
- '---------' | | | | | | | | | | | | | | |
- |_|_|_|_|_|_| |_| |_|_|_| |_|
- * *
-
- * This is the key slot which identifies the side of the connector
- towards which the colored edge (pin 1) of the cable must be facing.
-
-
- AA
- AAAA
- AA AA
- AA AA
- AAAAAA
- AA AA
- AA AA
-
- The power cable is keyed to ensure proper orientation. A separate power
- cable must be connected to each hard disk drive. There is no distinction
- between the power cables for drive 1 or drive 2.
-
-
- BBBBBB
- BB BB
- BB BB
- BBBB
- BB BB
- BB BB
- BBBBBB
-
- There are several types of command cables used to connect the hard disk
- to the controller. You will need to determine which of the cables listed
- below matches the cable you are using. The type of cable you are using will
- determine where the drive select jumper should be on your hard disk.
-
- Page 2
-
-
-
-
-
-
-
-
-
-
-
-
- The pin nearest to the notch on the edge connector is pin 1. Pin 1 on
- the command cable may be identified by any of the following:
-
- 1. A triangle stamped on the connector, OR
- 2. A colored stripe on the end conductor of the cable, OR
- 3. A keying tab inside the connector (to prevent reverse insertion.)
-
-
-
-
- This cable is used in a system that has only one hard disk.
-
- .-------------------.
- | Connected to the |
- | controller |
- |___________________|
- * | | | | | | | |
- .---------->* | | | | | | | |<-----------------------------.
- |The star * | | | | | | | | This cable is designed for |
- |line * | | | | | | | | use with a single hard disk. |
- |indicates * | | | | | | | | The drive select jumper must |
- |the * | | | | | | | | be on the first position and |
- |colored * | | | | | | | | the terminating resistor |
- |edge of * | | | | | | | | should be left on the drive. |
- |the cable * | | | | | | | |<-----------------------------'
- ---------->* | | | | | | | |
- .-------------------.
- | Connected to a |
- | single hard disk. |
- '-------------------'
-
-
-
-
- The cable shown below is designed for use in systems that have two hard
- disks, although it can also be used in single hard disk systems. When
- attaching the cables to your hard disk and floppy disk drives, please make
- note of the following:
-
- 1. The cable used on the floppy drive has the reversed (twisted) wires
- nearest the edge with the colored wire (pin 1), AND
-
- 2. The wide (command) cable attached to the hard disk has the twisted (*)
- wires furthest from the edge with the colored wire (pin 1).
-
- * Your hard disk command cable may not have any twisted wires. If this is
- the case, please see the note below.
-
-
-
-
-
-
- Page 3
-
-
-
-
-
- .------------------.
- | Connected to the |
- | controller |
- '------------------'
- * | | | | | | | |
- .----------->* | | | | | | | |
- |The star * | | | | | | | |
- |line * | | | | | | | |
- |indicates * | | | | | | | |
- |the * | | | | | | | |
- |colored * | | | | | | | |
- |edge of * | | | | | | | |
- |the cable * | | | | | | | |
- ----------->* | | | | | | | | .--------------------------------.
- * | | | | | | | | | This connector is for the 2nd |
- * | | | | | | | | | hard disk in the computer. The |
- * | | | | | | | | | drive select jumper should be |
- * | | | | | | | | | in the 2nd position and the |
- .-------------------. | terminating resistor should be |
- | Connected to the | <-' removed from the disk drive. |
- | 2nd hard disk. | <----------------------------------'
- '-------------------'
- * | | | | | | | | .----------------------------.
- * | | | | |\ /| | |If your cable does NOT have |
- * | | | | | | | |this twisted set of wires, |
- * | | | | | T | | |then drive one must have the|
- * | | | | | W | |<-----'drive select jumper in the |
- * | | | | | I | | NOTE! 1st position. |
- * | | | | | S | |<-----. * CAUTION * |
- * | | | | | T | | |THIS APPLIES ONLY WHEN THERE|
- * | | | | | | | |IS NO TWIST IN THE CABLE!! |
- * | | | | |/ \| | '----------------------------'
- * | | | | | | | |
- .------------------.
- |Connected to the | <--------------------------------.
- |1st hard disk | <. This connector is for the 1st |
- '------------------' | hard disk in the computer. If |
- | your cable DOES have a twist, |
- | then the drive select jumper |
- | should be in the 2nd position |
- | and the terminating resistor |
- | should be left on the disk |
- | drive. |
- '-------------------------------'
-
-
- CONTROLLERS:
-
-
- The controller pictured here is typical of PC/XT type controllers. Your
- hard disk controller may have a different layout of components, but it
- should have the connectors shown in the diagram.
-
- To properly connect the command and data cables to the hard disk
- controller, pin 1 must be located on the cable as well as on the
- controller. Pin 1 on the controller may be located by one of the
- following methods:
-
-
-
- Page 4
-
-
-
-
-
-
-
- 1. The number 1 printed on the card near one end of the row of pins (as
- shown in the diagram), OR
- 2. A square solder mark on the back side of the controller where the row of
- pins are soldered to the controller, OR
- 3. Controller card documentation.
-
- Pin 1 on the cables may be located by one of the following methods:
-
- 1. A triangle stamped on the connector, OR
- 2. A colored edge on one side of the ribbon cable, OR
- 3. A keying tab may be inside one of the connector holes that mates with a
- missing pin on the controller.
-
-
-
-
- | Command cable |
- |_______________|
- Data cable for _______________________________|_____________________ .----
- the 1st drive | | ____ | |
- -------------------|---> :::::::::: ::::::::::::::::: |____| | |
- | 1 1 | |
- -------------------|---> :::::::::: _______ _______ ____ | |
- Data cable for | 1 | | | | |____| | |
- the 2nd drive | ____ | | | | | |
- | |____| |_______| |_______| ____ | |
- | _______________ |____| | |
- | | | ____ | |
- | | | ____ ____ |____| | |
- | |_______________| |____||____| ____ | |
- | |____| | |
- | 8 Bit Hard Drive Controller | |
- |____________________________________________________| |
- | | | | | | | | | | | | | | | | |
- |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_| |
-
-
-
-
- The controller pictured below is typical of PC/AT type controllers. Your
- hard disk controller may have a different layout of components, but it
- should have the connectors shown in the diagram. To properly connect the
- command and data cables to the hard disk controller, pin 1 must be located
- on the cable as well as on the controller. Pin 1 on the controller may be
- located by one of the following methods:
-
-
- 1. The number 1 printed on the card near one end of the row of pins (as
- shown in the diagram), OR
- 2. A square solder mark on the back side of the controller where the row of
- pins are soldered to the controller, OR
- 3. Controller card documentation.
-
-
-
-
-
-
- Page 5
-
-
-
-
-
-
-
- Pin 1 on the cables may be located by one of the following methods:
-
- 1. A triangle stamped on the connector, OR
- 2. A colored edge on one side of the ribbon cable, OR
- 3. A keying tab may be inside one of the connector holes that mates with a
- missing pin on the controller
-
-
-
- _______________________________
- | |
- | __ |
- | _ ____ |__ |
- | _ | | | | |__ |
- | | | |_| | | |__ |
- | |_| | | |
- | |____| |
- | |
- | |
- | ____________ _____ |
- | | | | | |
- | |____________| | | |
- | _ _ | | |
- | | | | | | | |
- | |_| |_| |_____| |
- | | Data cable (D) for disk 2
- | _ _ J3 ::::::::: |<---------------------------------
- _____| | | | | |
- |_____| |_| |_| | Data cable (D) for disk 1
- |_____| __ J2 ::::::::: |<---------------------------------
- |_____| | | |
- |_____| | | | Command cable (B) for disk 1 & 2
- | | | J1 :::::::::::::::: |<---------------------------------
- _____| | | |
- |_____| |__| | This cable header is for floppies.
- |_____| _ J4 :::::::::::::::: |<---------------------------------
- |_____| | | |
- |_____| |_| |
- |_____| _ _ _ |
- |_____| | | | | | | |
- |_____| |_| |_| |_| |
- |_____| _ _ _ _ |
- |_____| | | | | | | | | |
- | |_| |_| |_| |_| |
- |_______________________________|
- ____________________________________
- |
- |
- |
-
- CCCC
- CC CC
- CC
- CC
- CC
- CC CC
- CCCC
-
- Page 6
-
-
-
-
-
-
- The drive select jumper on your hard disk needs to be set according to
- the command cable used in your system. The proper drive select may be
- determined as follows:
-
- 1. If you are using a command cable with a single hard disk connector, the
- drive select jumper should be in the 1st position.
-
- 2. If you are using a command cable with connectors for two hard disks and
- wires 25-29 are reversed (twisted) between the two hard drive
- connectors, then BOTH HARD DISKS (*) should have the drive select jumper
- in the 2nd position.
-
- 3. If you are using a command cable with connectors for two hard disks and
- none of the wires are reversed (twisted), then the drive select jumper
- should be in the 1st position for drive one and the 2nd position for
- drive two.
-
- * The reversed wires make a hard disk with the drive select jumper in the
- second position react as drive one.
-
-
- DDDDDD
- DD DD
- DD DD
- DD DD
- DD DD
- DD DD
- DDDDDD
-
- The data cable is the narrow ribbon cable. You will need one data cable
- for each hard disk installed in the computer.
-
-
-
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- . .
- . Ontrack Computer Systems provides this reference as a .
- . service to assist users with their hard disk installation. .
- . .
- . .................................................. .
- . :: PLEASE, :: .
- . :: :: .
- . :: CONTACT YOUR HARDWARE VENDOR OR MANUFACTURER :: .
- . :: IF YOU HAVE HARDWARE DIFFICULTIES :: .
- . ::..............................................:: .
- . .
- . . For information on DISK MANAGER and specific computers, please .
- . check the DM.REF and README files on the DISK MANAGER diskette. .
- . .
- . . For a printed copy of this, or any other reference file, .
- . insert the DISK MANAGER diskette in drive A: and type .
- . .
- . COPY HARDWARE.REF PRN .
- . .
- . or replace HARDWARE.REF with the name of the file you want to print. .
- . .
- . . . . . . . . . . . . . . . Page 7 . . . . . . . . . . . . . . . . . . . . .