Contents

This Help file covers the topics listed below.  Click on a topic for help information.

What is Guest?

System Requirements for Guest

How to Load Guest

Advanced Loading Options

Solving Problems that may occur when using Guest

Required Files for Using Guest

Using Guest as a Permanent Driver

Printing Help Information

For Help on Help, Press F1


What is Guest?

Guest is a portable driver program that lets you use an external Zip or Jaz drive on a computer without having to permanently install the Iomega driver or the Tools software.  There are versions of Guest for both Macintosh and PC systems.  Guest for IBM-compatible PCs running Windows 3.1 and/or DOS is described here.  If you are using Windows 95, refer to Help for Guest95 on the Windows/DOS "Install" floppy.  If you use both Macintosh and PC systems and you want to run Guest on both platforms, you can obtain information on Guest for Macintosh by referring to the Iomega Guest Help file which is installed on Mac systems.

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 Zip or Jaz disks.

You can use Guest to support other Iomega drives including Bernoulli drives, and non-Iomega removable SCSI drives such as SyQuest drives.

See also:

System Requirements for Guest

How to Load Guest

Using Guest as a Permanent Driver


System Requirements for Guest

To run GUEST.EXE, you need a compatible version of Windows and/or DOS.

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

•	Compatible versions of DOS include MS-DOS version 5.0 or higher, and PCDOS version 6.0 or higher.  To check your version of DOS, use the DOS VER command.

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

See also:

How to Load Guest


How to Load Guest

Use the following procedure to load Guest:

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

2.	Insert the "Install" floppy disk for Windows/DOS into the computer's floppy drive.

3.	If you use 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 b:Guest (if the Install floppy is in drive b:), then press the Enter key.  After Guest loads, you can restart Windows.

If you encounter any problems, refer to Solving Problems in this help file.  (The information in this help file is also found in the text file GUESTHLP.TXT on the Install floppy disk for Windows/DOS.)

For information on printing these instructions, refer to Printing Help Information.

See also:

System Requirements for Guest

Required Files for Using Guest

Advanced Loading Options


Advanced Loading Options

Loading Guest into Upper Memory

Express Loading Guest

Assigning Specific Drive Letters with GUEST.EXE


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.

See also:

Express Loading Guest

Required Files for Using Guest


Express Loading Guest

Each time the Guest driver loads, it must also load an ASPI manager so that it can communicate with your drive (Zip or Jaz) through the computer's SCSI host adapter.  To provide Guest with the flexibility to use a variety of host adapters, the "Install" floppy for Windows/DOS includes a complete set of Iomega ASPI managers.  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" floppy for Windows/DOS to another disk.

The "Install" floppy disk is 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 disk 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:  Use a text editor to open the GUEST.INI file.

Locate the GUEST.INI file on your copy of the "Install" floppy disk.  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 line 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

Parallel Port Zip Drive	ASPIPPM1.SYS

PPA-3 Adapter	ASPIPPM1.SYS

Zip IDE	ASPIIDE.SYS

Jaz Jet	ASPI2930.SYS

Zip zoom SCSI Accelerator	ASPIPC16.SYS

PC1616 adapter	ASPI1616.SYS

PC1600 adapter	ASPIPC16.SYS

PC800 adapter	ASPIPC8.SYS

PC2 adapter	ASPIPC2.SYS

PC4 adapter	ASPIPC4.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 Zip or Jaz drive is connected to an Iomega PC1616 adapter, you would remark out all ASPI manager lines except the ASPI1616.SYS line:

rem ASPI=ASPIPPM1.SYS  /INFO FILE=NIBBLE.ILM SPEED= 1

rem ASPI= ASPIIDE.SYS  /INFO

rem ASPI=ASPI2930.SYS  /D

rem ASPI=ASPIPC16.SYS  /INFO

ASPI=ASPI1616.SYS  /SCAN  /INFO

rem ASPI=ASPIPC8.SYS  /SCAN  /INFO

rem ASPI=ASPIPC2.SYS  /SCAN  /INFO

rem ASPI=ASPIPC4.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 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 for your drives software.

For information on printing these instructions, refer to Printing Help Information.

Related topics:

Loading Guest into Upper Memory

Required Files for Using Guest

Printing Help Information


Assigning Specific Drive Letters with GUEST.EXE

If desired, you can tell the Guest driver to assign specific drive letters by adding the following option to the GUEST.EXE command line in the computers AUTOEXEC.BAT file:

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.EXE letter=g

Other drives supported by GUEST.EXE would then receive drive letters in alphabetical order after G.  (When supporting more than one drive, GUEST.EXE assigns drive letters in order of SCSI ID number from lowest to highest.)

NOTE:  When using the Letter option, you must have a LASTDRIVE statement in the computers 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 problem-solving section on No drive letter available for the drive .


Solving Problems that may occur when using Guest

This section describes solutions for the following problems:

Guest does not assign a drive letter to your drive

Duplicate drive letters

No drive letter available for the drive

You want to use a different drive letter

Using Guest with non-Iomega ASPI managers

Drive C: no longer accessible


Guest does not assign a drive letter to your drive

If you run the Guest program and it informs you that no drive letters were added, and yet you cannot access your drive, it indicates that the driver is unable to locate a Zip or Jaz drive.  This is probably due to a hardware installation problem.  For detailed hardware installation troubleshooting information refer to the MANUAL.EXE located on your Install floppy diskette.

After checking your hardware installation, rerun GUEST.EXE.


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 it is already being assigned a drive letter.


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 Zip or Jaz 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 your drive 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.

Load GUEST.EXE after the computer boots.

For information on printing these instructions, refer to Printing Help Information.

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.


You want GUEST.EXE to give your drive a different drive letter
You want to use a different drive letter

If you wish to use a different drive letter with a drive supported by GUEST.EXE, you can use the Letter option to specify the drive letter you want.  You may want to use this feature if you are running applications from your Zip or Jaz 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.

For detailed instructions on using the Letter option, see Assigning Specific Drive Letters with GUEST.EXE or refer to MANUAL.EXE located on the install floppy diskette for Windows/DOS.


Using Guest with non-Iomega ASPI managers

The Guest driver utilizes ASPI managers to communicate with drives connected through a SCSI host adapter.  The "Install" floppy for Windows/DOS includes a set of ASPI managers for Iomega adapters.  If you are using a non-Iomega host adapter and ASPI manager software, you may need to edit the GUEST.INI file and add a line for the non-Iomega ASPI manager.  (If the adapter does not have an ASPI manager, Guest will not be able to operate.)

Use the following procedure to edit the GUEST.INI file:

Step 1:  Copy all files on the "Install" floppy for Windows/DOS to another disk.

The "Install" floppy diskette is 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 disk 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:  Use a text editor to open the GUEST.INI file.

Locate the GUEST.INI file on your copy of the "Install" floppy disk.  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:  Add a command line for the non-Iomega ASPI manager.

Use the following syntax:

ASPI=<full path for ASPI manager><ASPI manager filename>

The following line is an example for an ASPI2DOS ASPI manager which is located in the directory C:\ASPI:

ASPI=C:\ASPI\ASPI2DOS.SYS

If you do not know the path or filename for the non-Iomega ASPI manager, refer to the documentation that came with the adapter or ASPI software.

Step 4:  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.

Step 5:  Use your edited copy of the "Install" floppy disk to run the Guest program.

ASPI Manager Reference:  Detailed reference information on the ASPI managers included with the Guest driver is located in the Electronic Installation Manual for your drives software.

For information on printing these instructions, refer to Printing Help Information.


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 ASPI managers, refer to the Electronic Installation Manual for your drives software.


Required Files for Using Guest

All of the files needed to load Guest are present on the "Install" floppy for Windows/DOS.  If you create additional floppies for loading Guest, make sure you include the following files:

GUEST.EXE

GUEST.INI

ASPIPPM1.SYS

ASPIIDE.SYS

ASPI2930.SYS

ASPIPC16.SYS

ASPI1616.SYS

ASPIPC8.SYS

ASPIPC2.SYS

ASPIPC4.SYS

NIBBLE.ILM  (Required for ASPIPPM1.SYS)

MODULE.INI

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

For information on printing this file list, refer to Printing Help Information.


Using Guest as a Permanent Driver

The Guest program, GUEST.EXE, is also the permanent driver program for your drive under Windows 3.1.  If you install the Tools software using the SETUP.EXE program on the "Install" floppy for Windows/DOS, 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 a Zip or Jaz 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.EXE program on the "Install" floppy for Windows/DOS.  If desired, you can select to install only the driver.

To run the SETUP.EXE program, insert the Windows/DOS "Install" floppy disk 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" floppy is in drive a:), or b:setup (if the Install floppy 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 a detailed manual installation procedure, refer to MANUAL.EXE located on your Install floppy diskette.

See also:

Advanced Loading Options


GUEST.INI File

A file used by the Guest driver when it loads.  Most of the information in the GUEST.INI file relates to the ASPI managers available for the Guest driver to use.


ASPI1616.SYS

The Iomega ASPI manager used for the PC1616 SCSI host adapter.


ASPI Manager

Software which controls a specific SCSI host adapter.  An ASPI manager allows the GUEST driver to communicate with drives connected to the adapter (such as a Zip or Jaz drive) through a standard interface.


LASTDRIVE

A DOS command used in the CONFIG.SYS file to increase the number of physical drives that the system recognizes.


CONFIG.SYS

A file DOS uses to configure the system each time the computer is started or rebooted.


GUEST.EXE

GUEST.EXE is the Iomega driver program for Zip and Jaz.  When you run GUEST.EXE, it loads the Iomega driver to support your Zip or Jaz drive (or other removable SCSI drives you may want to use with the Guest program).  When you permanently install Iomega software, it installs GUEST.EXE to run automatically each time the computer boots.


Printing Help Information

If you have a printer connected to your computer which is set up to print from Windows, you can print the instructions for any help topic.  Simply load the topic you want to print, and select Print Topic from the File menu at the top of the Guest Help window.


Electronic Installation Manual

The electronic Installation Manual for your Iomega software is located on the "Install" floppy for Windows/DOS. To access the manual, insert the "Install" diskette into the computer's floppy drive, go to the DOS prompt and type:

A: <Enter>	 (use B: in place of A: if the Install floppy

is in drive b:)

MANUAL <Enter>

•	You can also run the manual in Windows 3.1 from the Windows File Manager by selecting the drive letter for your floppy drive, and then double-clicking on MANUAL.EXE.

•	In Windows 95 you can run the manual from the My Computer or Windows Explorer by selecting the drive letter for your floppy drive, and then double-clicking on MANUAL.EXE.