
*******************************IMPORTANT***************************************
1) If you are using OS2/2.1 please change to your OS2 directory and check
the date of FORMAT.COM -- if it is before 6-1-93 6:44am please back it up by
renaming it to FORMAT.ORI and copy FORMAT.COM from this disk.  If your version
is a later date do not use the format.com from this disk.  If you continue to
have problems, call the OS2 hot line at 1-800-992-4777.
*******************************************************************************


2) You may notice that the icon for the optical drive is not correct and this
problem has been reported to OS2.

3) Two new parameters have been added since the documentation:
     /1 -- defaults the 3431 drives to be using 1024 byte per sector media
           (instead of the normal default of 512 byte per sector media).
           As always, the type of the media in the drive at boot time will
           override the default setting.
     /C -- enables write caching on the IBM drives that support this feature.
           The default for write caching is disabled (see note below).

*******************************************************************************
NOTE: Write cache is used to improve performance of some drives by returning a
      write complete status when the data to be written has been loaded into
      the buffer memory of the drive.  there is a small risk of the data being
      lost due to a power loss or drive failure with write caching enabled.
      The user should choose either performance improvment (use write cache
      enabled (/c switch)) or fail-safe data integrity (use write cache
      disabled (no switch, this is the default)).
*******************************************************************************



The files sent are:
                   certifyf.exe   (utility for formatting fat)
                   format.com     (for OS/2 2.1, see note above)
                   mo.ddp         (used by DDINSTAL during installation)
                   mo.sys         (for MO drives)
                   mo001.msg      (message file for mo.sys)
                   moopt.dgs      (Diagnostics for IBM Reference diskette)
                   readme.txt     (this file you are reading)

Note: If you are currently using an IBM 3 1/2 optical using FAT
for a file system. You can continue using FAT after installing MO.SYS.
When using MO.SYS (ver1.1) make sure that you add the /D1 parameter.


MANUAL INSTALL OF MO.SYS on OS2 2.1

Copy the above files into a directory of your choice.

Make sure the Message file MO001.MSG is in your DPATH.

FOR MO DRIVES:

Make sure you have the two following lines in your config.sys:
           BASEDEV=IBM2SCSI.ADD /LED
           BASEDEV=OS2SCSI.DMD

In CONFIG.SYS, replace any statement DEVICE=OPTICAL.SYS by MO.SYS /D1
MO.SYS replaces OPTICAL.SYS.  If you have no such statement please add
the line DEVICE=drive\path\MO.SYS /D1.

Note: If you have some other device driver for the drive installed it must
be removed.

Restart your system and note what drive letter(s) is/are assigned
to the optical drive(s) in your system. You need to know this to
format a new disk.
