Enclosed are some question & answer dialogs which users may find helpful if 
they are experiencing problems getting the Mitsumi CD-ROM Device Driver for 
OS/2 to function properly.

  Q) Do I need to have a CD-ROM disc in the drive when booting?

  A) Currently, a disc is needed in the CD-ROM drive during the boot 
     process. If one is not present the Mitsumi CD-ROM Device Driver for 
     OS/2 will not install itself.


  Q) Do I need to disable DMA support on the Mitsumi adapter?

  A) Yes. This can be done by removing the DMA jumpers. Make sure that 
     an IRQ is also configured.


  Q) I tried adding an IFS=CDFS.IFS statement to my CONFIG.SYS file and 
     the computer refused to boot. Is this a problem since I already have 
     an IFS= statement for HPFS?

  A) No, it's not a problem having more than one IFS= statement in the 
     CONFIG.SYS. The IFS=CDFS.IFS statement is required if you want to be 
     able to access the CD-ROM drive via the OS/2 file system. We're not 
     sure what would cause the computer not to boot, but we have seen this 
     occasionally at times with the CDFS. Whenever we've had this problem 
     we just rebooted and it did not occur again.


  Q) How do I assign a device name for MSCDEX.EXE?

  A) MSCDEX is not required when using a native OS/2 CD-ROM driver and 
     the CDFS. The CDFS is the functional equivalent of MSCDEX.


  Q) Your documentation doesn't mention anything at all about how to 
     access the drive. There seems to be no command line parameter to 
     specify the drive letter for it, so I assumed that it would pick a 
     drive letter itself.

  A) The drive letter assignment is not done by the Mitsumi driver, it is 
     done by the OS/2 CD-ROM Device Manager (OS2CDROM.DMD). After OS/2 is 
     booted bring up the "OS/2 System" container. In it is the "Drives" 
     container, bring it up. There should be an icon for each drive in the 
     system, including the Mitsumi CD-ROM Drive. The CD-ROM Drive icon 
     looks like a disc or record. Under the drive icons are the drive 
     assignments for each drive. If there is no CD-ROM drive icon than the 
     CD-ROM support is not properly installed.


  Q) How can I make sure that the CD-ROM support is properly installed by 
     OS/2 during the installation process?

  A) During the installation process (after you boot without the floppies) 
     a window appears titled "System Configuration". There is a group box 
     titled "Currently Installed Peripherals" in this window. There is a 
     checkbox for "CD-ROM Device Support", check it. Modify any other items 
     in this window which might be applicable to your system configuration.
     When done select Ok. Another window will appear titled "Select CD-ROM 
     Device(s)" (this window may not be the first one to appear after 
     selecting Ok, depending on what you may have changed in the "System 
     Configuration" window). This window contains a large list box with 
     various supported CD-ROM drive types. At the bottom of the list there 
     is a type called "OTHER". Select this and exit the dialog. Continue 
     with the rest of the installation process. OS/2 will install all the 
     required CD-ROM support except the Mitsumi CD-ROM Device Driver for 
     OS/2.

     When the installation process is finished it will be necessary to copy 
     the Mitsumi CD-ROM Device Driver for OS/2 (MITSUMI.ADD) into the OS/2 
     directory on the drive where OS/2 is installed. Also, the BASEDEV= 
     statement for the MITSUMI.ADD driver must be added to the CONFIG.SYS 
     file. Make sure that the proper command line parameters are also 
     included on the line BASEDEV=MITSUMI.ADD following the statement.


  Q) Can I have OS/2 install the CD-ROM support after I already have 
     installed OS/2?

  A) Yes. If you go to the system setup folder and do a selective install 
     on CD-ROM device support. When prompted for drive type select OTHER. 
     This will copy the required files to the hard disk, as well as 
     modifying the CONFIG.SYS to contain the proper statements.

     When the selective install process is finished it will be necessary to 
     copy the Mitsumi CD-ROM Device Driver for OS/2 (MITSUMI.ADD) into the 
     OS/2 directory on the drive where OS/2 is installed. Also, the BASEDEV= 
     statement for the MITSUMI.ADD driver must be added to the CONFIG.SYS 
     file. Make sure that the proper command line parameters are also 
     included on the line BASEDEV=MITSUMI.ADD following the statement.


  Q) If the CD-ROM support is not properly installed what can I do to 
     check the installation.

  A) First verify that OS/2 itself is correctly installed. This can usually 
     be assumed if the system appears to boot properly, but if you are 
     experiencing problems you may want to contact IBM support to assist 
     you in this process. Also verify that the CD-ROM drive hardware is 
     properly installed and functioning. You may verify this by installing 
     the supplied DOS driver under DOS and accessing the drive. Don't 
     forget that the CD-ROM drive/interface must be configured for Software 
     Interrupt Mode. If you are experiencing problems you may want to 
     contact support from the drive vendor to assist you in this process.
     After you feel that the OS/2 system is installed and functioning 
     properly and the CD-ROM hardware is installed and functioning properly 
     you may try the following procedures. There are some important files 
     that are required for CD-ROM support. Briefly, they are:

       CDFS.IFS     - OS/2 CD-ROM Installable File System 
       OS2CDROM.DMD - OS/2 CD-ROM Device Manager
       UCDFS.DLL    - OS/2 CD-ROM Utility DLL for system utilities
       UCDFS.MSG    - OS/2 CD-ROM Message file for systems utilities
       DEV002.MSG   - OS/2 Message file for devices
       VCDROM.SYS   - OS/2 CD-ROM Virtual Device Driver for DOS support
       MITSUMI.ADD  - Mitsumi CD-ROM Device Driver for OS/2

     The first six required files can be installed by OS/2 by doing a 
     selective install. Please see questions above on how to do this. The 
     Mitsumi CD-ROM Device Driver for OS/2 is included in the package you 
     received from Systems Integration Technologies, Inc. Copy this file 
     into the OS/2 directory on the drive where OS/2 is installed. 

     There should also be CONFIG.SYS statements for the CD-ROM Installable 
     File System, the CD-ROM Device Manager, the CD-ROM Virtual Device 
     Driver for DOS support and the Mitsumi CD-ROM Device Driver for OS/2. 
     Check for the presence of the following statements and files, if they 
     are missing they must be put in. The 'd' is the drive where OS/2 is 
     installed.

                IFS=d:\OS2\CDFS.IFS
                DEVICE=d:\OS2\VCDROM.SYS 
                BASEDEV=MITSUMI.ADD

     Make sure that the proper command line parameters are also included on 
     the line BASEDEV=MITSUMI.ADD following the statement. It can be very 
     helpful to use the /V parameter for feedback during the boot process. 
     The CD-ROM Device Manager and the CD-ROM File System can also accept 
     this parameter as well. If any changes were made to the CONFIG.SYS 
     reboot the computer.


  Q) Does it matter where in the CONFIG.SYS file I place the BASEDEV= 
     statement for the MITSUMI.ADD driver?

  A) Technically, no. But users have reported sporadic problems by placing 
     the BASEDEV= statement at various locations in the CONFIG.SYS file. 
     Some have indicated that it must be placed above/before the statements 
     that load the CD-ROM Device Manager (OS2CDROM.DMD) and CD-ROM File 
     System (CDFS.IFS).
