


                               User's Manual
                        Device Driver for SCSI-MO
                        =========================

      for MS-DOS 6 and Windows(R) 3.1, Windows for Workgroups 3.11
                      for IBM PC/AT and compatibles


                             FUJITSU LIMITED


                                       (Revised:February 03, 1997)


All Rights Reserved, COPYRIGHT (C) FUJITSU LIMITED 1995,1996,1997




Contents of this document is subject to change without notice.
No part of this document may be reproduced in any form or by any means.

Windows, MS-DOS, and Windows NT are either registered trademark or trademark
of Microsoft Corporation.
IBM, PC, AT and OS/2 are either registered trademark or trademark of 
International Business Machines Corporation.
Other company names and product names are registered trademarks or trademarks
of their respective companies.





Table of Contents
=================
1. Preface
  1.1  Contents of the package

2. Notes and Restrictions
  2.1 NOTE
  2.2 RESTRICTIONS

3. Installation
  3.1  Installation program
  3.2  Manual installation

4. Outline of the Device Driver
  4.1  Functional overview
  4.2  Operating environment (hardware)
  4.3  Operating environment (software)
  4.4  Supported drive
  4.5  Supported physical formats of MO disks
  4.6  Supported logical formats of MO disks

5.  Details of Device Driver
  5.1  Syntax
  5.2  Loading driver in main memory
  5.3  Drive letter assignment
  5.4  Supported logical formats
  5.5  Compatibility with other systems
  5.6  Formatting utility FJFDISK
  5.7  Built-in Formatting function of DOS
  5.8  Software configuration

6. Writing to write-protected disks
  6.1  DOS
  6.2  Windows 3.1 or WFW3.11
  6.3  Smartdrv

7. Other considerations

8. Trouble-Shooting
  8.1 Hardware Trouble
  8.2 Software Trouble
  8.3 MO disk trouble



1. Preface
==========
Thank you for using Fujitsu's SCSI magneto-optical (MO) disk drive. 
The device driver, MODSIK2.SYS, in this package allows you to use SCSI 
MO drives.
in the DOS and Windows 3.1/WFW3.11 environment.
This device driver supports 640Mbyte MO disk(2048byte/sector) using 
with M2513 MO drive.


1.1  Contents of the package
----------------------------
MODISK2.SYS    Device driver.
MODISK2.TXT    This file you are reading now.
FJFDISK.EXE    Formatter.
FJFDISK.TXT    Instructions for the formatter.
NSR.TXT        Explanation of the NSR format.
INSTALL.EXE    Installer.
INSTALL.MSG    This file is used by the installer (do not modify this file).
INSTALL.GID    Explanation for the installer.

*) The program contents is subject to change without notice.





2. Notes and Restrictions
==========================
2.1 NOTE
--------
(1) Check that an ASPI manager is installed on your PC.

(2) In order to format MO disk, use FJFDISK.EXE as much as possible.

   Although FORMAT command which is included in DOS can format MO disk, 
   use FJFDISK.


2.2 RESTRICTIONS
----------------
(1) "Copy Disk" or "Format Disk" of DISK menu in file manager of Windows 3.1 
    or WFW 3.11 cannot be used for MO disk.

(2) FORMAT command cannot be performed in DOS prompt in Windows3.1 or 
    in WFW3.11.





3.  Installation
================
3.1  Installation program
-------------------------
Check that an ASPI manager is installed on your PC.

The source of installation need not be a floppy disk.
For example, you can make a sub-directory on your hard disk, and copy all the 
necessary files to that sub-directory before installation.
The following description assumes that the installer is in floppy 
disk drive A:.

(1) Set A:\ as the current drive.

(2) Type the following at the DOS prompt:
>INSTALL [Enter]

[Enter] means to press the [Enter] key.

(3) Follow the on-screen instructions.

(4) When the installation is complete, re-start your computer.


The installer automatically performs the following:

(1) Creates the \FJMO directory on drive C:.

(2) Copies the following files to the C:\FJMO directory:
MODISK2.SYS
MODISK2.TXT
FJFDISK.EXE
FJFDISK.TXT
NSR.TXT
INSTALL.EXE
INSTALL.MSG
INSTALL.GID

(3) Adds the following line to the last line of C:\CONFIG.SYS.
DEVICE=C:\FJMO\MODISK2.SYS


3.2  Manual installation
------------------------
To install the device driver manually, perform steps (1) to (3) above 
by yourself. 
Then, re-start the computer.

Register the MO device driver after ASPI manager.





4. Outline of the Device Driver
===============================
MODISK2.SYS

4.1  Functional overview
------------------------
The device driver supports Read/Write and disk change of SCSI MO drives in
the DOS environment.


4.2  Operating environment (hardware)
-------------------------------------
The following hardware is necessary for the operation of this device driver:
1) IBM PC/AT or compatible.
2) SCSI host adapter card (SCSI board)
3) Fujitsu MO drive


4.3  Operating environment (software)
-------------------------------------
1) DOS version 5 or later
2) ASPI manager for SCSI host adapter
   An ASPI manager is usually bundled with the SCSI board.
   To install the ASPI manager, refer to the manual of the SCSI board.


4.4  Supported drive
---------------------
(1) Disk device with SCSI interface.

(2) Boot drive(DOS starts up from which) is not mounted.

(3) SCSI drive which is registered to the BIOS of SCSI board is not mounted.


4.5  Supported physical formats of MO disks
-------------------------------------------
3.5-inch MO disks
1) 128 Mbytes total size, 512 bytes per sector
2) 230 Mbytes total size, 512 bytes per sector
3) 540 Mbytes total size, 512 bytes per sector
4) 640 Mbytes total size, 2048 bytes per sector


4.6  Supported logical formats of MO disks
------------------------------------------
(1) Volume format (partitioning method)
- Super floppy format
- AT hard disk format
- NSR format

* For details of each format, see Section 5.4.

(2) File format in each partition (file system)
- FAT (file allocation table)

  The FAT file system is used by DOS, and is supported by Windows 95, 
  Windows NT, and OS/2.





5.  Details of Device Driver
============================
5.1  Syntax
------------
Register the device driver in the CONFIG.SYS file as described below. 
The description is not case-sensitive.

DEVICE=(path)\MODISK2.SYS [/P][/Ii][/Rr]
or
DEVICEHIGH=(path)\MODISK2.SYS [/P][/Ii][/Rr]

    /P    Pause option
    Pauses screen messages after the device driver is initialized during the 
    computer starting process.
    Pressing any key continues the operation.
    Specify this option in order to check the message displayed by the 
    device driver.

    /Ii	Device number option
    Only the device with SCSI ID i is mounted.
    To specify the host adapter number together, type /Ih:i (h is the host
    adapter number and i is the SCS-ID).
    To specify multiple devices, use the "+" character as a delimiter. 
    Example: /I0:1+1:2

    If this option is not specified, all ports are scanned.
    Therefore, this option need not be specified usually.

    /Rr    Reserved drive option
    Specify the number of reserved logical drive letters (r=1 to 10).
    If this option is not specified, one drive letter is reserved.
    The number of reserved drive letters (r) is independent of the number
    of disk partitions.


5.2 Loading driver in main memory
---------------------------------
This device driver will not be loaded in main memory in the following cases:
In the case, driver is not loaded, the message "Driver not loaded." will be 
displayed.

(1) With no ASPI manager loaded, the diver will not be loaded.

(2) When the driver cannot find the MO disk, the drive will not be loaded.

(3) In the case, the driver is doubly registered in CONFIG.SYS, 
    the second driver will not be loaded.

Note) The driver can detect either drive with MO disk or that without 
       MO disk.

This MO disk device driver stays resident with about 10 kByte in memory.
The more number of reserved drive letters, the larger in memory size.


5.3  Drive letter assignment
----------------------------
(1) If the disk inserted upon starting the computer has more partitions than 
  the number specified with the /R option, as many drive letters as the number 
  of partitions are assigned to the MO drive.

  For example, if the /R2 option is specified in CONFIG.SYS and the computer 
  is started with a three-partition disk, three drive letters are assigned 
  to the MO drive.

(2) If a disk inserted in the MO drive has more partitions than the number of 
  drive letters assigned to the MO drive, the driver can access only as 
  many partitions as the number of drive letters assigned to the MO drive.

  For example, assume that two drive letters are assigned to the MO drive.
  If the MO disk with three-partitions is inserted, the driver cannot access 
  the third partition.

(3) If a disk inserted in the MO drive has fewer partitions than the number 
  of drive letters assigned to that drive, an error occurs when the driver 
  attempts to access the excess drive letter.

  For example, if two drive letters (D: and E:) are assigned to the MO drive.
  Then a single-partition disk is inserted, the driver can access that disk 
  using drive letter D:. However, if an attempt is made to access the disk 
  using drive letter E:, an error occurs and the "Invalid disk type" 
  message is displayed.


5.4  Supported logical formats
------------------------------
The device driver automatically detects the following three types of format 
and assigns logical drive letters (such as D: or E:).

(1) Super floppy format
  A standard MO format used with MS-DOS. 
  The entire disk is handled as one logical drive. 
  This format is generally called the IBM format.
  Use the attached FJFDISK program to make this format.

(2) AT hard disk format
  A format with partitions, used with hard disks for PC/AT compatibles. 
  One MO disk can be divided into multiple partitions. 
  Use the attached FJFDISK program or the FDISK command of DOS to make this 
  format.

(3) NSR format (NSR volume format)
  An international standard (ISO13346) that divides an optical disk into 
  multiple partitions. 
  One MO disk can be divided into multiple partitions (logical drives).
  NSR is an acronym for ISO13346 and stands for Non-Sequential Recording.
  Use the attached FJFDISK program to make this format.

* The driver assumes an unformatted MO disk if the MO disk is in any other 
format or has no valid partition.


5.5  Compatibility with other systems
-------------------------------------
The driver can read data from and write data to an MO disk formatted by the 
following operating systems:

* Compatibility table (Read/write of MO disks formatted by other systems)

     -------------------------------------------------------------------------
     OS          Formatter                  Disk format
     -------------------------------------------------------------------------
     DOS 5, 6   OS utility(FDISK(*1)+FORMAT) AT hard disk format
                Fujitsu (FJFDISK)            Super floppy format
                                             AT hard disk format 
                                             NSR format

     Windows 95  OS utility                  Super floppy format
        (FDISK(*2)+FORMAT in DOS prompt Mode) AT hard disk format

     Windows NT  Disk Administrator          AT hard disk format(FAT format only)
                 Fujitsu formatter           Super floppy format(FAT format only)
                                             AT hard disk format(FAT format only)
                                             NSR format(FAT format only)

     OS/2        OS utility                  Super floppy format
                 Fujitsu formatter           Super floppy format
                                             AT hard disk format
                                             NSR format
     -------------------------------------------------------------------------
Notes:
*1 Need to set up the BIOS of your computer, refer to the manual 
   of your computer.
*2 Need to check the [Int13 unit]check box in the device manager.


5.6  Formatting utility FJFDISK
--------------------------------
(1) This package includes a formatting utility, FJFDISK.EXE. 
    This utility performs physical and logical formatting of MO disks. 
    The following formats can be generated:

      1) Super floppy format
      2) NSR format
      3) Hard disk format

    For more information, read FJFDISK.TXT.

(2) If a logically unformatted disk is accessed in DOS, the error message
    "Invalid disk type" 
    is displayed.

    If a logically unformatted disk is accessed in Windows 3.1 or WFW3.11, 
    the error message
    "Drive * does not exist"
    is displayed.

    In these cases, use FJFDISK to format the disk.

(3) If a physically unformatted disk is accessed in DOS, the error message
    "Not ready reading..."
    is displayed.

    If a physically unformatted disk is accessed in Windows 3.1 or WFW3.11, 
    the error message
    "Not ready"
    is displayed.

    In these cases, use FJFDISK to format the disk physically.


5.7  Built-in Formatting function of DOS
----------------------------------------
MO disks can be formatted by the built-in formatting command of 
DOS (FORMAT). 
The function of these commands are similar to FJFDISK, so use FJFDISK 
whenever possible.

The outline of the FORMAT commands are described below. 
For more information, refer to the user's manual of DOS.

(1) FORMAT
    FORMAT command have the following functions:
    - Formats partition
    - Formats the un-formatted disk into the super floppy format


    [Note 1]
    Two different type disks cannot be formatted successively.
    In order to format two or more disks using FORMAT, terminate FORMAT 
    command each time and re-start FORMAT command with the next disk inserted.

    An exception:
    Two or more un-formatted disk with the same capacity are successively 
    formatted.

    [Note 2]
    If you stopped formatting with "Ctrl + C", MIRROR.FIL file remains 
    on the disk.
    This file is un-format data. You can delete it.

    [Note 3]
    "Format Disk..." menu item of Windows 3.1 or WFW3.11 File Manager 
    does not work with MO drive. 
    Also "Copy Disk..." menu item of Windows 3.1 or WFW3.11 File Manager 
    does not work with MO drive. 

    [Note 4]
    Format command does not work in DOS prompt of Windows 3.1 or WFW3.11.

    [Note 5]
    Format command does not support 640Mbyte MO disk(2048byte/sector).


5.8  Software configuration
---------------------------
This device driver accesses MO drives using the ASPI manager functions.
The figure below shows the software configuration of the device driver.

         +--------------------------+
         | DOS (Version 5 or later) |
         +--------------------------+
                     |
         +--------------------------+
         |     MODISK2.SYS          |
         +--------------------------+
                     |
               (SCSI Command)
                     |
         +--------------------------+
         |     ASPI Manager         |
         +--------------------------+
                     |
         +--------------------------+
         |      SCSI MO drive       |
         +--------------------------+





6. Writing to write-protected disks
===================================
6.1  DOS 6
----------
    When an attempt is made to write data to a write-protected disk, the 
    following error message is displayed and the processing is paused:

    Write protect error writing drive *
    Abort, Retry, Fail?

    In this case, remove the disk, release the write protect, re-insert 
    the disk, and then select "Retry" or simply select "Abort".


6.2  Windows 3.1 or WFW3.11
---------------------------
(1) When an attempt is made to write data to a write-protected disk, 
    the following error message is displayed and the processing is paused:

    "Write protect error"

    In this case, click on [OK], remove the disk, release the write protect, 
    re-insert the disk, and resume the operation.

(2) The error message is not displayed when an attempt is made to write 
    a file with a size of less than 512 bytes to a write-protected disk. 
    Of course, no operation is performed on the disk.

(3) The error message 
    "The specified directory already exist" 
    will be displayed when an attempt is made to create a directory on 
    a write-protected disk.
    Of course no new directory is made.


6.3  Smartdrv
--------------
By default, the Smartdrv write cache is OFF for MO drives.
It can be set to ON.

When the Smartdrv write cache is ON for MO drives, NEVER attempt to write
data to a write-protected disk.

The followings are what happens when writing to write-protected disk:

(1) DOS environment
  If you attempt to write data to a write-protected disk while the Smartdrv
  write cache is ON, the following error message is displayed;

A serious disk error ha occurred while writing to drive *
Retry (r) ?

  Then remove the disk, release the write protect, re-insert the disk, 
  and press "r" key. You have no choice.

(2) Windows environment
  If you attempt to write data to a write-protected disk while the Smartdrv
  write cache is ON, blue display appears with error message:

"A serious disk error has occurred while writing to drive *."

  Then remove the disk, release the write protect, re-insert the disk,
  and press any key. And continue your work.





7. Other considerations
=======================
(1) Do not use this device driver with other device drivers
    which controls SCSI MO disk.

(2) Maximum number of drive letters
    This device driver assigns drive letters up to Y:. 
    If the number of drive letters specified with the /R option exceeds Y:, 
    the driver assigns drive letters up to Y:. 
    Similarly, if a disk with more partitions than Y: is inserted when 
    the computer is started, the driver assigns drive letters up to Y: 
    and ignores the rest of the partitions.

(3) Lastdrive specification
    The Lastdrive specification (LASTDRIVE=*) in CONFIG.SYS does not affect 
    the drive letter assignment of the MO drive.
    For example, if LASTDRIVE=H: is specified, drive letters I: and later 
    can be assigned by specifying a large value for the /R option.

(4) Drive letters for CD-ROM drives
    If this driver assigns a later drive letter than the drive letter 
    specified by LASTDRIVE=* (default is E:) in CONFIG.SYS, no drive 
    letter can be assigned to a CD-ROM drive. 
    In such a case, the CD-ROM drive cannot be accessed. 
    To solve this problem, increase the value specified for LASTDRIVE=.

(5) The "Copy Disk..." and "Format Disk..." menu items of Windows 3.1 
    or WFW3.11 File Manager do not support MO drives. 

    FORMAT command cannot be used in DOS prompt in Windows3.1 or WFW3.11.

(6) In DOS window in Windows3.1 or WFW3.11, accessing the MO drive without 
    disk or drive with unformatted disk results in displaying error 
    message in full-screen DOS.

    Follow the instruction and then press "Alt + Enter" to return to DOS 
    window.

(7) Utility program which rewrites the boot sector cannot be used with
    2048byte/sector MO disk(640Mbyte MO disk).
    For example, FORMAT command or SYS command.  
    When you use SYS command, files can be copied, but the boot sector cannot 
    be rewritten. 
    Then, the disk cannot boot the OS.

(8) When using MO drive with Always IN-2000 SCSI board, note the following:
    If the setup of IRQ on mother board and that of SCSI board are not 
    coincide, the ASPI manager does not work properly.
    For detailed information, refer to manuals of PC and SCSI board.





8. Trouble-Shooting
===================
This section helps you if you encounter problems when using SCSI-MO drive.
There are following three troubles which causes problem:

  - Hardware trouble
  - Software troubles
  - MO disk troubles

Check list, CHKLIST.TXT, is attached. When you have problem, print out 
CHKLIST.TXT and check each items on the list.
The followings are the same list as CHKLIST.TXT.


8.1 Hardware Trouble
--------------------
(1) Is MO drive turned on?

(2) Is SCSI cable firmly connected to MO dive?

(3) Is SCSI cable firmly connected to SCSI board in your computer?

(4) Is terminator setting/connection correct ? 

(5) Is total length of SCSI cable too long?

(6) Aren't SCSI IDs doubly registered? 
    The SCSI ID of each SCSI device must be unique.

(7) Is SCSI board firmly connected to your computer?


8.2 Software Trouble
-------------------
(1) Is the ASPI manager loaded?

(2) Dose the ASPI manager correctly recognize the MO drive?

(3) Is this device driver registered after the ASPI manager in CONFIG.SYS file?

(4) Isn't the MO drive controlled by the BIOS on SCSI board?
    This device driver does not read/write MO disk in the drive which is 
    controlled by the BIOS on the SCSI board.


If all items mentioned above are OK, the device driver should be loaded in memory.


8.3 MO disk trouble
-------------------
(1) Is the disk physically formatted ?

    In order to know whether the disk is physically formatted, run FJFDISK.
    If the disk is not physically formatted, FJFDISK displays message,
    "Low-level format is needed".
    Then continue to execute low-level format using FJFDISK.

(2) Is the disk logically formatted ?

    In order to know whether the disk is logically formatted, run FJFDISK.
    FJFDISK shows the mark "*" in front of the format type in which the 
    disk is formatted now.
    If the disk is not logically formatted, no "*" will appear.
    Then continue to execute logical format using FJFDISK.

