GUEST HELP
November 10, 1995
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
5 Solving Problems that may occur when using Guest
Guest does not assign a drive letter to the
Jaz drive
Duplicate drive letters
No drive letter available for the Jaz 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
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Section 1
What is Guest?
Guest is a portable driver program that lets you use your
Jaz drive on a computer without having to permanently
install the Iomega driver or Jaz 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. For
information on Guest for Macintosh, refer to "Iomega Guest
Help" on the "Install" floppy for Macintosh.
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 the Jaz drive and provides the Jaz drive with
a drive letter. Guest allows you to read files from and
write files to your Jaz disks.
In addition to the Jaz drive, you can use Guest to support
other Iomega drives, including Zip drives, 5.25 inch
Bernoulli drives and LaserSafe drives, as well as non-Iomega
removable SCSI drives, such as SyQuest drives and magneto-optical drives.
NOTE: When you install Jaz 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."
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Section 2
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 4.0
or higher, PC-DOS version 4.0 or higher, and DR/Novell
DOS 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. If the Jaz drive is
connected to a non-Iomega SCSI adapter, check the
information under Solving Problems in this help file before
loading Guest.
_________________________________________________________
Section 3
How to Load Guest
Use the following procedure to load Guest to run your Jaz
drive:
1. Connect the Jaz drive to the computer according to the
instructions in your Jaz Installation Guide.
2. Insert the "Install" floppy disk for Windows/DOS in the
computer's floppy 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 "b:Guest" (if the
"Install" floppy is in drive b:), 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 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 the Jaz drive
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 the Jaz drive (or other supported Iomega drives).
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 Jaz "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 Jaz drive.
For example, if you routinely use Guest when your Jaz 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 ASPI2930.SYS
PC1616 ASPI1616.SYS
PC1600 ASPIPC16.SYS
PC800 ASPIPC8.SYS
PC2 ASPIPC2.SYS
PC4 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 Jaz
drive is connected to an Iomega PC1616 adapter, you would
remark out all ASPI manager lines except the ASPI1616.SYS
line:
rem ASPI=ASPI2930.SYS
rem ASPI=ASPIPPA3.SYS
ASPI=ASPI1616.SYS
rem ASPI=ASPIPC16.SYS
rem ASPI=ASPIPC8.SYS
rem ASPI=ASPIPC2.SYS
rem ASPI=ASPIPC4.SYS
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 Jaz "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" (MANUAL.EXE). You can
access the manual from the "Install" floppy for Windows/DOS
by typing:
A: <Enter>
MANUAL <Enter>
_________________________________________________________
Section 5
Solving Problems that may occur when using Guest
This section describes solutions for the following problems:
5.1 Guest does not assign a drive letter to the Jaz
drive
5.2 Duplicate drive letters
5.3 No drive letter available for the Jaz drive
5.4 Using Guest with non-Iomega ASPI managers
5.5 Drive C: no longer accessible
_____________________________
Section 5.1
Guest does not assign a drive letter to the Jaz drive
If you run GUEST.EXE and it informs you that no drive
letters were added and yet you are unable to access the
drive, then Guest was unable to locate the drive. This is
probably due to a hardware installation problem. Check the
following:
* Make sure the drive is correctly connected to the
computer. The Jaz drive must be connected to a SCSI host
adapter supported by an ASPI manager which is installed in
the CONFIG.SYS file or the GUEST.INI file.
* Make sure the drive is correctly connected to a working
power supply and that power is ON. The green power light on
the front panel of the external Jaz drive will be ON when
the power supply is correctly connected and the drive power
switch is turned on. The internal Jaz drive must be
securely connected to a computer power supply cable as
illustrated in the printed Installation Guide that came with
the drive.
* Make sure all data cable connections are STRAIGHT and
SECURE. Push the data cable for the external Jaz drive onto
the drive's SCSI connector on until it locks in place. If
you are using the 50HD to 25D cable converter, tighten the
connector screws firmly and evenly. If you have an internal
Jaz drive, make sure all Pin 1 connections are correct.
(Refer to the printed Installation Guide that came with your
drive for detailed instructions on connecting cables.)
* If your drive is part of a SCSI chain, make sure that
each device in the chain has a unique SCSI ID number (no
duplicates). If you need to change a SCSI ID setting, turn
off power to the computer and all devices in the chain,
change the conflicting SCSI ID, and power up again.
* Make sure the SCSI chain is properly terminated at each
end and that termination is OFF for other devices in the
chain. If the external Jaz drive is the only or last drive
on the SCSI connection, make sure the SCSI termination
indicator light on the back of the drive is ON (indicating
that the Jaz drive has termination actually on). If
termination is not on when it needs to be, move the
termination switch on the back of the drive to the manual ON
position ( | ). If the Jaz drive is in the middle of the
SCSI chain, termination should be off. If necessary, move
the termination switch to the manual OFF position ( 0 ).
(Use a pen point or straightened paper clip to move the
switch.)
After checking your hardware installation, rerun GUEST.EXE.
_______________________________
Section 5.2
Duplicate drive letters
If you see two drive letter for your Jaz drive (or other
drive you are using with 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.
______________________________
Section 5.3
No drive letter available for the Jaz 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 for the Jaz drive (or other drive you are
connecting with Guest). 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. Use the following
procedure to edit 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 located in
the root directory on the computer's boot drive (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. 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, be sure you make enough
spare drive letters available after E: to accommodate the
drive you are installing and any other drives you may add to
your system. If your CONFIG.SYS file already has a
LASTDRIVE statement, simply change the letter to one further
down the alphabet. Do not set the last drive letter to one
close to the end of the alphabet, such as X, Y, or Z.
Step 3: Save the changes to the CONFIG.SYS file and exit
the text editor. If you are using an editor that can save
the file in 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.
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 5.4
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 Jaz "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" (MANUAL.EXE). You
can access the manual from the "Install" floppy for
Windows/DOS by typing:
A: <Enter>
MANUAL <Enter>
_____________________________
Section 5.5
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" (MANUAL.EXE).
You can access the manual from the "Install" floppy for
Windows/DOS by typing:
A: <Enter>
MANUAL <Enter>
_________________________________________________________
Section 6
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
ASPI2930.SYS
ASPIPPA3.SYS
ASPI1616.SYS
ASPIPC16.SYS
ASPIPC8.SYS
ASPIPC2.SYS
ASPIPC4.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 the Jaz drive under Windows 3.1/DOS. If you
install Jaz Tools software using the Setup program on the
"Install" floppy disk 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 Jaz drive (or other supported drive),
it loads into the computer's memory and assigns the Jaz
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 disk. If
desired, you can select to install only the driver.
To run the Setup program, insert the Jaz 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 in the computer's AUTOEXEC.BAT file. For
a detailed manual installation procedure, refer to the
electronic "Installation Manual" (MANUAL.EXE) located on the
"Install" floppy.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.