
                                 GUEST HELP
                               April 22, 1998

          Contents
          
          Section#  Topic
               1    What is Guest?
               2    System Requirements for Guest
               3    How to Load Guest
               4    Advanced Loading Options
                              Loading Guest into Upper Memory
                              Express Loading Guest
                              Assigning Specific Drive Letters with GUEST.EXE

               5    Solving Problems that may occur when using Guest
                              Guest does not assign a drive letter to your drive
                              Computer hangs when you run Guest
                              Duplicate drive letters
                              No drive letter available for the drive
                              Using Guest with non-Iomega ASPI managers
                              Drive C: no longer accessible

               6    Required Files for Using Guest
               7    Using Guest as a Permanent Driver
                              Loading GUEST from the Install floppy
                              Loading GUEST from the Install CD
               8    Using Guest on Other Systems
                    
          
          _________________________________________________________
          Section 1
          What is Guest?
          
          Guest is a portable driver program that lets you use an
          external Iomega drive on a computer without having to
          permanently install the Iomega driver or Tools software. 
          There are versions of Guest for both Macintosh and PC
          systems.  Guest for IBM-compatible PC's running Windows 3.1
          and/or DOS is described here.  If you want to use your drive
          on a PC running Windows 95/98 or on a Macintosh, refer to
          the section on "Using Guest on Other Systems" later in this
          file.

          When you run GUEST.EXE, the Guest driver loads into the
          computer's memory and stays there until the computer is
          rebooted.  While Guest is in memory, it tells the computer
          how to talk to your drive and provides the drive with a
          drive letter.  Guest allows you to read files from and write
          files to your Iomega disks.

          NOTE:  When you install Tools software under Windows 3.1, it
          installs the Guest driver program in the computer's
          AUTOEXEC.BAT file so that Guest loads each time the computer
          boots.  For more information, refer to Section 7, "Using
          Guest as a Permanent Driver."

          
          
          _________________________________________________________
          Section 2
          System Requirements for Guest

          To run GUEST.EXE, you need a compatible version of DOS
          and/or Windows.
  
            *  Compatible versions of DOS include MS-DOS version 5.0
               or higher, and PC-DOS version 6.0 or higher.  To check
               your version of DOS, use the DOS VER command.

            *  Compatible versions of Windows include Windows 3.1 or
               3.11, and Windows for Workgroups 3.1 or 3.11.

          The drive you want Guest to support must be connected to the
          computer before Guest is loaded.
          


          _________________________________________________________
          Section 3
          How to Load Guest
          
          Use the following procedure to load Guest:

           1.  Connect your drive to the computer according to the
               instructions in the drive's Installation Guide.

           2.  Insert the "Install" floppy diskette for Windows/DOS or
               the "Install CD" into the computer's appropriate drive.

           3.  If you are using Windows, you MUST exit Windows before
               loading Guest.  Select Exit from the Program Manager's
               File menu, and click on OK to end the Windows session.

           4.  At the DOS prompt, type either "a:Guest" (if the
               "Install" floppy is in drive a:), or "d:Guest" (where
               "d:" is the drive letter for your CD-ROM drive), then
               press the Enter key.  If you use Windows, you can
               restart Windows after Guest loads.

          If you encounter any problems, refer to Solving Problems in
          this help file.

          
          _________________________________________________________
          Section 4
          Advanced Loading Options
          

          ______________________________
          Section 4.1
          Loading Guest into Upper Memory
          
          Guest can be loaded into upper memory using the DOS LOADHIGH
          command, provided an expanded memory manager (such as
          EMM386, QEMM, BLUEMAX, or 386MAX) is loaded on the computer. 
          Refer to your DOS User's Guide for detailed information on
          using the LOADHIGH command.
          
          
          ______________________________
          Section 4.2
          Express Loading Guest
          
          Each time the Guest driver loads, it must also load an ASPI
          manager so that it can communicate with your Iomega drive
          through the computer's SCSI host adapter.  To provide Guest
          with the flexibility to use a variety of host adapters, the
          Windows/DOS "Install" diskette or CD-ROM that came with your
          drive includes ASPI managers for all current Iomega
          adapters.  As Guest loads, it tries to load each ASPI
          manager in turn until it finds one that allows it to talk to
          your drive.

          Guest can load much more quickly if it does not have to use
          this trial-and-error process to find the correct ASPI
          manager.  If you use Guest routinely with one or two
          specific host adapters, you may want to edit the GUEST.INI
          file and remark-out the ASPI managers you do not need.  Then
          Guest will try to load only the ASPI managers for the
          adapters you normally use.

          Use the following procedure to customize your GUEST.INI
          file:

          Step 1:  Copy all files on the "Install" diskette for
          Windows/DOS, or from the root directory of the "Install CD,"
          to a floppy disk or your hard drive.

          The "Install" diskette and CD are permanently
          write-protected, so in order to edit the GUEST.INI file and
          use the new file to run the Guest program, you must copy the
          files to another disk.  You can copy the files to another
          floppy diskette or to the hard disk on the computer where
          you will be using the Guest program.  If you need
          instructions on copying files, refer to the documentation
          that came with your Windows or DOS programs.

          Step 2:  Locate the GUEST.INI file on the new copy of your
          "Install" diskette (or on your hard drive) and open it using
          a text editor. The GUEST.INI file is a text file, so you can
          use the Notepad in Windows, the DOS EDIT program, or any
          other ASCII text editor to edit it.

          Step 3:  Identify the ASPI manager Guest needs to load to
          support your drive.

          For example, if you routinely use Guest when your drive is
          connected to an Iomega PC1616 adapter, the Guest program
          needs to load the line that reads "ASPI=ASPI1616.SYS".  Use
          the following table to help you identify the ASPI manager
          line you need to load:

        Iomega Adapter                       ASPI Manager

             Jaz jet PCI Ultra (PC/Mac model)     ADVASPI.SYS
             Jaz jet PCI (PC/Mac model)           ADVASPI.SYS
             Jaz jet (PC-only model)              ASPI8DOS.SYS
             Jaz jet ISA                          ASPIPC16.SYS
             Jaz Traveller                        ASPIPPM1.SYS*
             Jaz Card PCMCIA SCSI adapter         ASPIPC16.SYS
             Parallel Port Zip drive              ASPIPPM1.SYS*
             Zip zoom SCSI Accelerator            ASPIPC16.SYS
             Zip Card PCMCIA SCSI adapter         ASPIPC16.SYS
             Zip ATAPI drive                      ASPIATAP.SYS
             Zip IDE drive                        ASPIIDE.SYS
             PC1616 adapter                       ASPI1616.SYS
             PC1600 adapter                       ASPIPC16.SYS

            *Some hardware uses ASPIPPM2.SYS rather than
             ASPIPPM1.SYS.

          Step 4:  Remark out each ASPI manager line you do NOT need
          to load by inserting "rem " at the start of the line.

          For the example where Guest is routinely used when the
          Iomega drive is connected to an Iomega PC1616 adapter, you
          would remark out all ASPI manager lines except the
          ASPI1616.SYS line:

               rem ASPI=ASPIIDE.SYS /INFO /SCAN
               rem ASPI=ASPIATAP.SYS /INFO /SCAN
               rem ASPI=ASPIPPM1.SYS /INFO FILE=NIBBLE.ILM SPEED= 1
               rem ASPI=ASPIPPM2.SYS /INFO FILE=NIBBLE2.ILM SPEED= 1
               rem ASPI=ASPI8DOS.SYS /D
               rem ASPI=ADVASPI.SYS
               rem ASPI=ASPIPC16.SYS /SCAN /INFO
               ASPI=ASPI1616.SYS /SCAN /INFO

          Step 5:  Save the changes to the GUEST.INI file and exit the
          text editor.

          If you are using an editor that has a variety of file
          formats, be sure to save the GUEST.INI file as ASCII text or
          DOS text.

          NOTE:  If you later need to use an ASPI manager which has
          been remarked out, simply edit GUEST.INI again and remove
          the "rem " at the start of the ASPI manager line, or use the
          original "Install" floppy diskette or "Install CD" to run
          Guest.

          ASPI Manager Reference:  Detailed reference information on
          the ASPI managers used by the Guest driver is located in the
          electronic "Installation Manual" (MANUAL.EXE).  You can
          access the manual from the "Install" diskette for
          Windows/DOS or "Install CD" by going to the DOS prompt and
          typing:

               A: <Enter> (or D: where D is your CD-ROM drive)
               MANUAL <Enter>

          
                    
          ______________________________
          Section 4.3
          Assigning Specific Drive Letters with GUEST.EXE.

          GUEST.EXE allows you to specify what drive letter you want
          assigned to your drive.  You may want to use this feature if
          you are running applications from your Iomega drive, or if
          you use your drive as a portable device on other computers
          and you want to maintain the same drive letter as you use on
          your own machine.

          To tell GUEST.EXE which drive letter to use, add the
          following option to the GUEST.EXE command line:

             letter=[the first drive letter you want Guest to use]

          For example, the following command line would tell Guest to
          assign "g:" to the first drive it finds to support:

             guest letter=g

          If you have more that one drive supported by GUEST.EXE, each
          additional drive would receive a drive letter following G in
          alphabetical order.  (When supporting more than one drive,
          GUEST.EXE assigns drive letters in order of SCSI ID number
          from lowest to highest.)

          NOTES: The Letter option can be used when running GUEST.EXE
          from a floppy diskette, or it can be added to the GUEST.EXE
          command line in the computer's AUTOEXEC.BAT file.  (See
          Section 7, "Using Guest as a Permanent Driver" for
          information on installing GUEST.EXE in the AUTOEXEC.BAT.)

          When using the Letter option, there must be a LASTDRIVE
          statement in the computer's CONFIG.SYS file that specifies a
          letter later in the alphabet than that used with the Letter
          option.  If GUEST.EXE is supporting more than one drive, the
          LASTDRIVE statement must provide enough drive letters for
          all supported drives.  If you need detailed instructions on
          adding a LASTDRIVE statement to CONFIG.SYS, refer to the
          information in Section 5.3, "No drive letter available for
          the drive."



          _________________________________________________________
          Section 5
          Solving Problems that may occur when using Guest

          
          _____________________________
          Section 5.1
          Guest does not assign a drive letter to your drive
          
          If you run the Guest program and it informs you that no
          drives were found, or if Guest tells you that no drive
          letters were added, and yet you cannot access your drive,
          there is probably a hardware installation problem that is
          preventing Guest from locating your Iomega drive.  Refer to
          the printed User's Guide that shipped with your drive for
          hardware installation troubleshooting information.

          
          _____________________________
          Section 5.2
          Computer hangs when you run Guest

          If the computer hangs when you run Guest, edit the GUEST.INI
          file and remove (rem) all ASPI managers except the one you
          need to load.  If you are using a non-Iomega adapter and
          Guest hangs, rem all of the ASPI managers in the GUEST.INI
          file and make sure the ASPI manager for the non-Iomega
          adapter is correctly installed in the computer's CONFIG.SYS
          file.  For detailed instructions on editing GUEST.INI to rem
          ASPI managers, refer to the instructions in Section 4.2,
          "Express Loading Guest."

          

          _______________________________
          Section 5.3
          Duplicate drive letters
          
          If you see two drive letters for a single drive on your
          system after running GUEST.EXE, reboot the computer
          immediately.  Using your drive when it is assigned duplicate
          drive letters can result in data loss.
          
          After the computer reboots, do not load GUEST.EXE.  You do
          not need to use Guest  to access the drive on this system
          because the drive is already being assigned a drive letter.

          NOTE: It is recommended that you always use an Iomega driver
          (either GUEST.EXE or SCSIDRVR.SYS) to support your Iomega
          drive.  If you see two drive letters after running
          GUEST.EXE, check your system to make sure a non-Iomega
          driver is not supporting your Iomega drive.  Note that if
          the drive is under BIOS control (either adapter or computer
          BIOS), disk removability will not be supported.

          
          ______________________________
          Section 5.4
          No drive letter available for the drive
          
          If all drive letters available for physical drives are in
          use on the system, GUEST.EXE will be unable to assign a
          drive letter to the drive you want to support.  Use the DOS
          LASTDRIVE command in the computer's CONFIG.SYS file to
          increase the number of physical drive letters.  For example,
          adding the statement LASTDRIVE=m to CONFIG.SYS will provide
          drive letters for ten additional drives after drive C:.  The
          following procedure provides detailed instructions for
          editing the CONFIG.SYS file. 

          Step 1:  Use a text editor to open the CONFIG.SYS file.

          You can use the Notepad in Windows, the DOS EDIT program, or
          any other ASCII text editor.  The CONFIG.SYS file is a text
          file located in the root directory on the computer's boot
          drive (C:).

          Step 2:  Add the following line to the end of the CONFIG.SYS
          file.

                              LASTDRIVE=m 

          This will provide ten additional drive letters for any new
          drives you want to add to your system, including your Iomega
          drive.  If you do not need all of the drive letters between
          d: and m: for physical drives, you can use a letter earlier
          in the alphabet in place of the letter m; however, make sure
          you provide enough drive letters after e: to accommodate the
          drive you are using with Guest and any other drives you may
          add to your system.  If your CONFIG.SYS file already has a
          LASTDRIVE line, change the last drive letter to one further
          down the alphabet.  Do not set the last drive letter to a
          letter late in the alphabet, such as X, Y, or Z, as this
          will use extra memory and prevent access to network drives
          assigned these letters on your system.

          Step 3:  Save the changes to the CONFIG.SYS file and exit
          the text editor.

          If you are using an editor that has a variety of file
          formats, be sure to save as ASCII text or DOS text.

          Step 4:  Reboot the computer, and load GUEST.EXE after the
          computer boots. 

          Network Users:  You may have to relocate your network drive
          letter.  

          Ask your network administrator for help, or refer to the
          following instructions:

          Your first network drive letter will be the letter following
          the one used in the LASTDRIVE statement in your CONFIG.SYS
          file.  For example, if you used LASTDRIVE=m, the first
          network drive letter will be N.

          If your network drive letter has changed, applications you
          are running from the network (such as Windows or other
          applications that reference specific drive letters) may fail
          to work correctly unless they are reinstalled or adjusted
          for the drive letter change.  If you use a batch file to
          connect to the network, it will need to be adjusted to the
          new drive letter.  Your network login script may need to be
          revised if it refers to a specific drive letter for your
          network drive.

          Check the following:

            *  Edit the Path statement in your AUTOEXEC.BAT file to
               correctly reference your new network drive letter.
 
            *  Edit any batch files which load shells or applications
               from a network (including AUTOEXEC.BAT) to correctly
               reference new drive letter assignments.
 
            *  Edit your Windows "INI" files and your Windows groups
               to correctly reference your new drive letters.
 
            *  Check other application setup files.  Rerun the setup
               if drive letters cannot be edited.
 
            *  Check your user login script for references to specific
               network drive letters.  
 
          Reboot your computer and check your applications. 
          Applications that do not work with the new drive letter may
          need to be reinstalled.
          
          
          _____________________________
          Section 5.5
          Using Guest with non-Iomega ASPI managers

          The Guest driver utilizes ASPI managers to communicate with
          drives connected through a SCSI host adapter, so the
          "Install" diskette for Windows/DOS and "Install CD" include 
          ASPI managers for current Iomega adapters.  If you are using
          a non-Iomega host adapter and ASPI manager software, make
          sure the ASPI manager is correctly loaded in the computer's
          CONFIG.SYS file.  This will enable GUEST.EXE to locate any
          Iomega drives connected to the adapter.  If you need
          instructions on installing the ASPI manager software in
          CONFIG.SYS, refer to the documentation that came with the
          adapter.

          NOTE:  If the adapter does not have an ASPI manager, Guest
          will not be able to operate.


          _____________________________
          Section 5.6
          Drive C: no longer accessible

          If you are booting from an Iomega PC1600 or Adaptec adapter,
          the ASPI manager for the adapter must be installed in the
          computer's CONFIG.SYS file before GUEST.EXE is run.  If the
          ASPI manager is not installed in CONFIG.SYS when GUEST.EXE
          is run, Guest will load the ASPI manager via the GUEST.INI
          file, which will cause drive C: to no longer be accessible.  

          NOTE:  The ASPI manager for the bootable adapter must be
          loaded before any other ASPI managers in the CONFIG.SYS
          file.  If you need information on installing Iomega ASPI
          managers, refer to the electronic "Installation Manual"
          (MANUAL.EXE).  You can access the manual from the "Install"
          diskette for Windows/DOS or from the "Install CD" by typing:

               A: <Enter> (or D: where D is your CD-ROM drive)
               MANUAL <Enter>

          
          _________________________________________________________
          Section 6
          Required Files for Using Guest
          
          All of the files needed to load Guest are present on the
          "Install" floppy diskette for Windows/DOS or in root
          directory of the "Install CD".  If you create additional
          disks for loading Guest, make sure you include the following
          files:

                    GUEST.EXE
                    GUEST.INI
                    ASPIPPM1.SYS
                    ASPIPPM2.SYS
                    ASPIIDE.SYS
                    ASPIATAP.SYS
                    ASPI8DOS.SYS
                    ADVASPI.SYS
                    ASPIPC16.SYS
                    ASPI1616.SYS
                    NIBBLE.ILM (Required for ASPIPPM1.SYS)
                    NIBBLE2.ILM (Required for ASPIPPM2.SYS)

          Refer to Section 4.2, "Express Loading Guest," for
          instructions on customizing the GUEST.INI file to minimize
          the time it takes to load Guest.
          

          
          _________________________________________________________
          Section 7
          Using Guest as a Permanent Driver

          The Guest program, GUEST.EXE, is also the permanent driver
          program for your Iomega drive under Windows 3.1.  If you
          install Tools software under Windows 3.1 using the SETUP.EXE
          program, it automatically installs GUEST.EXE in the
          computer's AUTOEXEC.BAT file.  This causes GUEST.EXE to run
          each time the computer boots.  If Guest can locate an Iomega
          drive (or other supported drive), it loads into the
          computer's memory and assigns your drive a drive letter.  If
          Guest cannot locate a supported drive, it does not load.

          If you use the Guest program frequently on a particular
          computer, you may want to install GUEST.EXE as a permanent
          driver on that computer.  If Windows is installed on the
          computer, the easiest way to permanently install Guest is by
          using the Setup program on the "Install" floppy diskette for
          Windows/DOS or in the root directory of the "Install CD". 
          If desired, you can select to install only the driver.
          
          
          _________________________________________________________
          Section 7.1
          Loading GUEST from the Install floppy

          To run the SETUP.EXE program, insert the Windows/DOS Install
          diskette into the computer's floppy drive.  Load Windows and
          choose Run from the Program Manager's File menu.  In the
          Command Line box, type either a:setup (if the Install
          diskette is in drive a:), or b:setup (if the Install
          diskette is in drive b:), then click on OK or press the
          Enter key.

          If the computer does not have Windows, you can manually
          install GUEST.EXE as the permanent driver in the computer's
          AUTOEXEC.BAT file.  For detailed manual installation
          procedures, refer to MANUAL.EXE located on your "Install"
          floppy diskette.
          

          
          _________________________________________________________
          Section 7.2
          Loading GUEST from the Install CD

          To run the SETUP.EXE program, insert the Install CD that
          shipped with your drive into the computer's CD-ROM drive. 
          Load Windows and choose Run from the Program Manager's File
          menu.  In the Command Line box, type d:setup (where "d:" is
          the drive letter for your CD-ROM drive), then click on OK or
          press the Enter key.

          If the computer does not have Windows, you can manually
          install GUEST.EXE as the permanent driver in the computer's
          AUTOEXEC.BAT file.  For detailed manual installation
          procedures, refer to MANUAL.EXE located in the root
          directory of the Install CD".


          _________________________________________________________
          Section 8
          Using Guest on Other Systems

          In addition to Guest for Windows 3.1/DOS, there are versions
          of Guest for Windows 95/98 and for Macintosh.  Use these
          other versions of Guest if you ever need to use your Iomega
          drive temporarily on one of these systems.

          Windows NT Users:  There is not currently a version of Guest
          for Windows NT because Windows NT does not yet support plug-
          and-play.  When connecting an Iomega drive to a Windows NT
          system, refer to the adapter installation instructions in
          the NTReadme.txt file on the Windows NT Install diskette or
          on the "Install CD" that came with your drive.


          To use your drive on a PC running Windows 95/98:

           1.  Power down your machine and connect your drive.

           2.  Insert the Windows/DOS "Install" diskette or "Install
               CD" that came with your Iomega drive into the
               computer's appropriate drive.

           3.  Open My Computer and double click on the appropriate
               drive icon (floppy or CD-ROM drive).

           4.  Double click the icon for Guest98.exe.

          Refer to "Guest98.hlp" for additional information.


          To use your drive on a Macintosh:
          You can load the Iomega Driver temporarily from any Iomega
          disk that is formatted for Macintosh:

           1.  Shut down the Macintosh and connect your Iomega drive.

           2.  Turn on power to your drive and insert a Mac-formatted
               disk.  (This procedure will work only if you use an
               Iomega disk that is formatted for Macintosh.)

           3.  Start the Macintosh following your normal startup
               procedure.