Simtel MSDOS 1992 June/SIMTEL_0692.cdr/msdos/dskutl/st225.arc/WDCONFIG.DOC

Text File | 1986-09-05 | 10KB | 302 lines

                   Sparta PCBoard Hard Drive Conference
                     [phone] or [phone]


                     Auto-config Formatting Procedures
                       Western Digital WD 1002S-WX2

The following information is taken directly from the Western Digital
Installation Guide for the WD 1002S-WX2 HD controller. For clarity
I have inserted my own notes on some portions of the procedures that
WD has lightly touched.

Step      Instructions

1.    Correctly install or remove jumper on SW1-5. This is the
    uppermost jumper on SW1.

        Note: This jumper tells the BIOS to read the jumpers 1-4
              on SW1 for the corresponding table to use or to
              accept keyboard input for the various parameters.


2.      At the A Prompt, insert the PC-DOS Supplemental Diskette;
        load and run the PC-DOS debug utility by typing DEBUG.

            A>DEBUG c/r

3.      At the debug prompt, initiate the WD format program by
      typing the following command line. The debug prompt is the
    hyphen "-".

            -g=c800:5 c/r

4.      The WD format program will display the following message:

    WX2 Format Revision T.8 (c) Copyright Western digital Corp. 1985
    Key in drive no and interleave as follows: d ii where
                d = relative no (0-1)
            ii = interleave factor (1-16)

    Enter d and ii separated by a space and followed with a Return

    Example:
            0 03 c/r

    NOTE: Drive C: = 0, Drive D: = 1. An interleave factor of 3 is
    standard. If formatting two drives, this option must be run
    twice; once with d=0 and again with d=1.

5.    The following message will be displayed:

    Key in disk characteristics as follows: ccc h rrr ppp ee oo
    where
    ccc = total number of cylinders (1-4 digits)
    h   = number of heads (1-2 digits)
       rrr = starting reduced write cylinder (1-4 digits)
    ppp = write precomp cylinder (1-4 digits)
    ee  = max correctable error burst (1-2 digits)
    oo  = CCB option byte (1 hex digit)

    Enter each value separated by a space and follow entry with
        a return

    Example:
            306 4 128 128 11 05 c/r

6.    CPU Response (did you know cpu's respond?)

    Are you virtually configuring the drive - Answer Y/N

    Enter a "Y" and c/r for yes or "N" and c/r for no.

    Sysop note: All this is asking is "Do you want to split
                    the drive into more than one volume"?

7.     If Yes, the following message is displayed.

    Key in virtual drive size list as vvvv
    where vvvv = virtual drive size (1-4 digits)

    Enter two cylinder numbers, followed by a space and
        c/r

    Note: The sum of these two numbers cannot exceed the
        maximum number of available cylinders on your hard disk.

    Example:
            153 153 c/r

    If No, continue to next step

8.    The following message will be displayed.

    Press "y" to begin formatting drive d with interleave ii.

    Note: d = drive number and ii = interleave factor.

    Type "Y" followed by a c/r

9.    System Responses:

    If any key other than "Y" is typed, the program displays
    the following message and returns to DOS.

    CPU response:
    Nothing done exit
    A>

    If an error occurs while formatting, the program will immediately
    terminate, display the following error message, and return to DOS.
    XX is the hexidecimal S-WX2 BIOS completion code.

    CPU response:
    Error----completion code XX
    A>

    If "Y" is typed, formatting is initiated. If there are no
    resulting errors, the program displays the following message.

    CPU response:
    Do you want to format bad tracks - answer Y/N

    Respond with appropriate Y or N followed by a c/r

The user is prompted to enter, via the keyboard, a bad track list.
This list should be provided by the drive manufacturer. However, due
to DOS limitations, this procedure is not remommended.

Sysop note: Let the sucker format the bad tracks and then use Norton's
            DT immediately after partitioning and high level format
           is performed to pick up any bad track information and mark
            them appropriately in the FAT.

Because of the logical addressing used by DOS, marking an entire track
bad will result in more than one logical address being marked bad. As
DOS can only accept a limited number of defects, a drive with excessive
defects may cause the format program to termnate with an error. The
displayed error is typically "TRACK 00 BAD - DRIVE UNUSABLE".

As a recommended alternative, execution of the DOS utility program
FORMAT should correctly locate and deallocate all media defects.

10.    If Yes, the following message is displayed.

    Key in bad track list as follows: ccc h ...(repeat)
    where
    ccc = bad track cylinder number (1-4 digits)
    h   = bad track head number (1-2 digits)

    Type in the cylinder and head numbers for the bad tracks,
    separate them with spaces, and follow with a c/r

    Example:
            160 1 161 1 304 3 223 4 223 2 c/r

    The bad track message will be displayed again. To
    terminate bad gtrack entry, type "N" followed by a c/r

11.    The following message is displayed.
    Format successful - Returning to system

If a second drive is to be formatted, repeat steps 4 through 13 with
d = 1, otherwise continue.


RUNNING THE FDISK UTILITY

The FDISK utility partitions the drive for DOS. Please refer to the
PC-DOS operating manual for detailed instructions regarding this utility.

12.    Load and run the FDISK utility to set up the disk partitions.

13.       CPU Response:

    IBM Personal Computer
    Fixed disk Setup Program Version 2.00
    Copyright IBM Corp. 1983

    FDISK Options

    Choose one of the following:

    1. Create DOS Partition
    2. Change Active Partition
    3. Delete DOS Partition
    4. Display Partition Data
       [5. Select Next Fixed Disk Drive]

    Enter Choice:

    Note: When two disk drives are installed, the system will
    automatically add a fifth choice on the menu:
    "5. Select Next Fixed Disk Drive". The first drive is
    partitioned using choice number 1. Then, the second drive
    is partitioned starting with choice number 5. All subsequent
    steps are the same for both drives.

    Select "Create DOS Partition" and enter a 1 followed by a c/r.

14.    The following message will be displayed:

    Create Dos Partition

    Do you wish to use the entire fixed
    disk for DOS (Y/N)...........?

    Type a Y followed by a c/r

15.     CPU response:

    System will now reboot

    Insert DOS diskette in Drive A:
    Press any key when ready..

RUNNING THE FORMAT UTILITY

16.    Load and run the PC-DOS utility program FORMAT to write the
    DOS structure and syustem files to the disk. At the A prompt,
    type FORMAT C: /S/V followed by a c/r

17.     The CPU will respond with:
    Press any key to begin formatting C:

18.     The System will respond with:

    Formatting....Format Complete
    system transferred

    Volume Label(11 Characters, ENTER for none)?

19.    Either enter the optional volume name and press c/r or just
    press c/r

20.    When the FORMAT program is finished, the hard disk is ready to be
    booted from. It will contain the file COMMAND.COM and the two
    system files which are hidden.

    Note: This is known as the "high level" format process. If a
    second drive, or Drive D:, is to be formatted, repeat steps
    12 through 19. When running FDISK on the second drive, enter
    choice [5] first, then continue as before.

21,      To verify that the hard disk will now boot, open the door of the
    floppy drive and do a warm boot by simultaneously pressing CTRL,
    ALT, and DEL (We call this the three finger salute). The system
    BIOS first examines Drive A for a system diskette. If it doesn't
    find one, then it will try to boot from the C drive, the hard
    disk. If the hard disk boot is successful, the system will assert
    the date, time, and C> prompts in order. Other files may now be
    copied to the hard disk.


Sysop Note: I am going to throw some technical mumbo jumbo in here just
to make you feel comfortable with the info you are typing into the
questions asked by WD's program.

The HD controller provides a system interface to the hardware and onboard
BIOS through direct and indirect i/o. Direct access is accomplished
by reading and writing to four I/O ports. Indirect access is achieved
by executing pre-written I/O subroutines contained in the BIOS on the
controller.

Commands are issued by the CPU to the controller over the host buss
using a pre-defined protocol (known as ST506/412). The CPU issues
a command sequence by selecting the controller. The controller accepts
the selection, and requests the appropriate command bytes. Upon command
completion, the controller issues completion status to indicate whether
the command was successfully completed or terminated because of an error.

Direct access operations are controlled through four I/O ports (assigned
default addresses 320H, 321H, 322H, and 323H). Each port is assigned one
Read register and one Write register as follows:
                        Registers
Port        Read                 Write
320H        Data IN            Data OUT
321H        Status            Reset (function)
322H        Configuration        Select (function)
323H        N/A            Mask


The CPU specified the operation or command to be executed by the controller
by sending a 6 or 10 byte Command Descriptor Block (CDB). The CCB we
were asked for earlier in the WD formatter routine is called the Command
Control Byte and is the last byte in the CDB. It specifies the error
recovery procedure during the command execution.

The ECC is comparable to CRC on a floppy drive. It is known as Error
Correction Code and is set on or off by one of the bits in Byte 5 of
the CDB.

My fingers are tired at this point and I am not going to get into
a further detailed discussion of each bit and its values in the
CDB. If you wish to obtain further information, give us a call at
Sparta PCBoard, join the HD conference, and fire away at us. We
may not have the answer, but we can usually get it.

Richard Driggers
SysOp - Sparta PCBoard

-eof-