1. iomega250.zip Driver
2. README.TXT File Contents

README.TXT Driver File Contents (iomega250.zip)

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Iomega Backup, Version 4.2
  

Copyright Arcada Software, Inc. 1994.
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This file contains important information that became
available after the written documentation was completed.

The following subjects are discussed:

     1.   Reading Irwin AccuTrak Tapes
     2.   Tape Format Incompatibilities
     3.   Installing Iomega Backup After Other Backup Programs
     4.   Installing DOS 6.x After Iomega Backup for Windows
     5.   Setup Disk Space Estimates
     6.   Compressed Drives
     7.   Video/DMA Conflict Problems
     8.   Laptop/Notebook Video Conflicts
     9.   Laptop Power Management Conflicts
    10.   Tape Despooling
    11.   Installing With Third-Party Windows Shells
    12.   Parallel Port Drive Configuration
    13.   Maximum Parallel Port Cable Length
    14.   IRQ Conflicts
    15.   Potential Conflict with Screen Savers
    16.   Encrypted Backup Sets
    17.   NetWare Files With an Execute Only (X) Attribute
    18.   Microsoft Works Thesaurus Corruption
    19.   Files Not Backed Up By Iomega Backup
    20.   Formatting Tapes on 386 Machines
    21.   Hardware Compression Not Supported
    22.   Changes to WIN.INI and SYSTEM.INI
    23.   Common Setup and Configuration Issues
    24.   Using Removable Media Drives
    25.   Restoring Files with NetWare Delete Inhibit or Rename
          Inhibit Attributes
    26.   Install: Selecting a Program Group
    27.   Performance Issues on QIC-3020 Parallel Port Tape Drives

   1.  Reading Irwin AccuTrak Tapes
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Your Iomega drive can read both QIC-40/-80 and Irwin
AccuTrak tapes. To read an Irwin tape, you must first rebuild
a catalog for the tape. Select Rebuild from the Catalog
menu. When the rebuilding process is complete, you can
load and use the catalog to restore files from that tape.

NOTE: You cannot format or write to AccuTrak tapes with your
Iomega drive.


   2.  Tape Format Incompatibilities
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Because of inconsistencies in the formatting process used by
different tape drives, it is highly recommended that you
format tapes in the drive where you will use them.


   3.  Installing Iomega Backup After Other Backup Programs
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You may experience difficulty running Iomega Backup
if some device files from other backup programs are
found in your SYSTEM.INI file. If you can't start
Iomega Backup, try commenting the following devices out
of your SYSTEM.INI file:

    CMSWTAPE.386
    CMSDTAPE.386
    CPVBX.386
    FASTBACK.386
    IRW286.DRV
    NOVABKP.386
    VIRWT.386
    VITD.386

To do this:

  1. Open the SYSTEM.INI file using a text editor.
  2. Search for the device name(s), e.g., DEVICE=CPVBX.386
  3. Type a semicolon (;) at the beginning of the line.


   4.  Installing DOS 6.x After Iomega Backup for Windows
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DOS 6.x installs an older version of the VFINTD.386 into the
DOS directory and then modifies the SYSTEM.INI
(DEVICE=C:\DOS\VFINTD.386). If you install MS-DOS 6.x after
Iomega Backup 4.2, the next time you launch Iomega Backup you
will be sent a warning dialog. This dialog notifies you that
the VFINTD.386 is the incorrect version. If you click OK in
this dialog Iomega Backup will save the existing SYSTEM.INI as
SYSTEM.QBW and make the necessary change to the "Device=" line
in the SYSTEM.INI. You can also make the changes manually by
performing the following steps:

  1. Open the SYSTEM.INI file using a text editor.
  2. Search for the VFINTD line (DEVICE=C:\DOS\VFINTD.386).
  3. Change the line to: DEVICE = [qbwin install path]\VFINTD.386.


   5.  Setup Disk Space Estimates
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To insure that the user always has enough disk space to
install Iomega Backup, the Setup program displays the
maximum amount of space that may be required for installation.
This estimate is affected by the actual options selected
for install and also includes some space that is necessary
in order to run the setup program.


   6.  Compressed Drives
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If you are using compression software such as Stacker or
DoubleSpace, do not back up the compressed file (for example,
stacvol.* or the dblspace files), back up the logical drive
instead. Because these compressed files are typically very
large, attempting to restore may cause problems if you do not
have enough disk space to restore the compressed file.


   7.  Video/DMA Conflict Problems
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Iomega Backup uses direct memory access (DMA) channels to
read and write data. Sometimes using a tape device that is
connected to the floppy controller causes conflicts with
the Windows 3.1 video drivers.

During the compatibility test, Iomega Backup determines if
your system has a video/DMA conflict and if so, goes through
a series of tests in an effort to ensure your system runs
reliably with Iomega Backup. After each test a message will
inform you that tests are still being performed. If
Iomega Backup has attempted every test and your
system will still not work reliably, a message will inform
you of the problem.

NOTE: If you experience video/DMA conflicts, try disabling the
Video Caching option (sometimes referred to as Video Shadowing)
in your CMOS setup.


   8.  Laptop/Notebook Video Conflicts
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Some laptop and notebook computers may have video conflicts
that cause the tape drive to move the tape back and forth
excessively  ("shoe-shining").

If you experience this, try minimizing the Iomega Backup icon
and making the Program Manager window active and moving it over
the top of the icon while the program is writing to or reading
from the tape. The Iomega Backup window will activate itself
when the backup or restore is finished, and this action should
speed up your session.


   9.  Laptop Power Management Conflicts
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Some laptop power management systems take a "snapshot" of RAM and
store it on the hard drive when they power down. This may create
a conflict if it occurs during a backup or restore or a tape
formatting operation.

When using Iomega Backup, it is recommended that you turn
OFF all power management features and plug your laptop into an
outlet rather than using the battery.


  10. Tape Despooling
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If a tape "despools" (comes loose from the cartridge capstan,
a very rare occurrence), it may be necessary to turn the drive's
power off and on again or to turn your system off and on again
to clear the drive.


  11. Installing With Third-Party Windows Shells
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If you use a third-party Windows shell program such as PCTools
or Norton Desktop for Windows, Iomega Backup may
not install correctly. If you experience difficulty installing
Iomega Backup under a shell, temporarily change your Windows shell
to the Program Manager before starting the setup program. To
change to the Program Manager, open your SYSTEM.INI file,
type a semicolon (;) in front of your current SHELL command in
the [boot] section, then type SHELL=PROGMAN.EXE on the following
line. For this change to take effect, you must restart Windows.
Remove these changes after installation to restore your
previous configuration.


  12.  Parallel Port Drive Configuration
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If your parallel port tape drive does not automatically
configure, first ensure that the power to the drive is on. If
it is, turn it off, then on, and try configuring it again. See
below for more suggestions.


  13. Maximum Parallel Port Cable Length
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Your parallel port tape drive should be connected directly to
your system's parallel port. If you use the pass-through
connector on the drive to connect a second device such as a
printer, the maximum cable length for both devices is
approximately 10 feet (3 meters).

If you have difficulty using your tape drive when a second
device is connected to the pass-through connector, disconnect
the second device and its cable while using the tape drive.

If you experience data loss when using a printer connected to
the pass-through connector, shorten the printer's cable if
possible or disconnect the tape drive while printing.


  14. IRQ Conflicts
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You may experience a conflict in IRQ selection if you are
configuring a parallel port tape drive on a system that
includes a sound card. SoundBlaster cards and compatibles use a
default IRQ of 7, which is also used by a printer port (LPT1).
If this conflict occurs, you can:

    *  Change your sound card's IRQ if possible. Some cards do
       not allow this change and some games may not work
       correctly.

    *  Check your system documentation to see if your parallel port
       can be configured to use a different interrupt.

Devices that may conflict with printer port interrupt:

       Sound Cards
       Scanner Cards
       Network Cards
       Bus Mice
       Other printer ports
       Other devices

IRQ usage can be determined by using the Microsoft Diagnostics
Program. Exit Windows and type MSD at the DOS prompt. Note that MSD
cannot always diagnose printer port IRQ conflicts. Printing does not
require a hardware interrupt and will function normally even if an
interrupt conflict exists.

Symptoms of an IRQ conflict include Iomega Backup not
finding the tape controller and network problems when
backing up to tape.


  15. Potential Conflict with Screen Savers
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If you attempt to use Iomega Backup while a screen
saver is active and you get DMA or other errors, manually
disable the screen saver before running Iomega Backup.


  16.  Encrypted Backup Sets
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Iomega Backup cannot restore backup sets encrypted by
other backup programs. You must use the original software to
restore them.


  17.  NetWare Files With an Execute Only (X) Attribute
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NetWare files with an execute only (X) attribute will not be
backed up, compared, or overwritten during a restore.


  18.  Microsoft Works Thesaurus Corruption
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The Microsoft Works Thesaurus requires that the archive bit (A)
be set. If you back up the Thesaurus, it may not work correctly.
If this occurs, contact Microsoft Technical Support.


  19.  Files Not Backed Up by Iomega Backup
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Iomega Backup does not log or back up a number of files
to avoid potential system conflicts if they are restored.

  Compressed Volume files:

     DBLSPACE.0??
     DRVSPACE.0??
     STACVOL.*

  Windows swap files:

     386SPART.PAR
     WIN386.SWP

  NetWare System files:

     BACKOUT.TTS
     NET$SPL.QUE
     NET$MSG.SYS
     DIRSTAMP.SYS
     NET$OBJ.SYS*
     NET$PROP.SYS*
     NET$VAL.SYS*
     NET$BIND.SYS*
     NET$BVAL.SYS*
     SYS$LOG.ERR

 * These NetWare bindery files will be backed up or restored
   only if you are logged on to a server as Supervisor. See your
   User Guide for more information.

Additionally, Iomega Backup will not back up a number of
temporary files used by the program when these files are found
in the program's directory.


  20.  Formatting Tapes on 386 Machines
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If you encounter difficulties formatting tapes on a slower 386
machine or receive a message stating "The tape controller is not
responding correctly," make sure your turbo switch is on.


  21. Hardware Compression Not Supported
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Iomega Backup for Windows, Version 4.2, does not support
the hardware compression function found on some high-speed
controller cards.


  22.  Changes to SYSTEM.INI and WIN.INI
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The following lines are added during installation:

WIN.INI [Extensions]
    set=[qbwin install path]\qbwin.exe^set

SYSTEM.INI [386enh]
    device=[qbwin install path]\vfintd.386

If the Load With Windows checkbox in the Backup Scheduler is
checked, the following item is added to WIN.INI [Windows] load=
line:

    load=[qbwin install path]\scheduler.exe

This item is removed from the load= line when the checkbox is
unchecked and the Backup Scheduler is closed.


  23.  Common Setup and Configuration Issues
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1. If you get an "Invalid Interrupt" or "Drive Not Detected"
message when using the Parallel Port Tape drive:

a. Use the Iomega printer cable that came with the drive. If a cable
defect is suspected, use a standard printer cable for testing
only.

b. If the parallel port is built into the motherboard and you
are adding a 2nd parallel port option card, set the 2nd parallel
port to LPT2.

c. If the parallel port is built into the motherboard, confirm
that it is enabled. Some motherboard manufacturers have an enable/
disable option in the BIOS setup.


2. If the drive is detected by Iomega Backup for DOS, but not by
_PRODUCT_NAME for Windows.

a. Check for virtual driver conflicts by launching Windows in
standard mode. Type Win /S at the c:\ prompt or Win /D:T if using
Windows for Workgroups.

b. Logitech Mouse driver version 6.30 can cause an interrupt
conflict. Upgrade to the latest driver from Logitech or use the
Microsoft-compatible mouse driver that comes with Windows 3.1.


3. Using the Parallel Port Tape Drive with 286 Machines

Iomega does not recommend using the Parallel Port Tape drive on 286
machines. The compression algorithms require processor performance
that is not always available with 286 machines. For better
performance, Iomega recommends turning compression off on 286
machines.


4. SCO UNIX Software

Follow the instructions for installing a QIC-80 tape drive found in
the SCO Systems Administrator's Guide that came with the operating
System. After installation, use the tape utility to format, retension,
or erase. If a tape I/O error is reported, format the tape even if it
is a pre-formatted tape. Use the TAR utility to back up and restore
from the tape drive. If you are using only one floppy drive, set the drive
select jumper (located on the back of the tape drive between the data
connector and the power connector) to DS1.


5. Connecting to a Floppy Disk Controller (FDC):

a. Disconnect the 34-pin flat ribbon cable connected to the floppy
disk drives from the FDC. The red stripe on the cable is
connected to pin 1. Write down how the cable is originally oriented
before removing.

b. Connect the cable that was connected to the FDC to the center
Y-cable connector that came with the tape drive. Be sure to
align the red stripes on both cables to each other.

c. Connect the short end of the Y-cable to the tape drive. The red
stripe will be closest to the power connector.

d. Connect the long end of the cable to the FDC, orienting
the red stripe the same way the original cable was when it was
removed.

e. Check the jumper configuration on the back of the tape drive.
There is a jumper located between the data cable and power connector
on the back of the tape drive. This jumper selects between DSS/DSP,
DS1, or DS0. The default mode is DSS/DSP. If the FDC only controls
two floppies use DSS/DSP. If the FDC controls up to four floppies
then DS0 or DS1 may have to be used.

f. Make sure the tape drive has a solid ground connection. This is
especially important for computers with plastic cases. A ground lug
connection is provided on the tape drive that can also be used to
connect a ground wire to the metal chassis or ground point of the
computer.


6. High-Speed Controller

To use the Tape Accelerator/Fast Floppy controller as the main
floppy controller:

a. Disable the standard floppy controller by turning it off in the
BIOS Setup or by a jumper on the board.

b. Set the port address of the Tape Accelerator to 3F0h, interrupt to
6, and DMA channel to 2. Connect the tape drive and floppies as
described in the installation guide or the Connection to a Floppy
Disk Controller section above. Install the backup software.

To use the Tape Accelerator/Fast Floppy controller as a secondary
floppy controller.

a. Leave the existing floppy controller and drives connected as
they are now. Change the address of the new controller or leave it
set to the default--the default settings will usually work. If
not, try I/O address 370h, IRQ 5, and DMA channel 1. It may be
necessary to go through several combinations to find one that
works.

b. Connect the tape drive to the secondary controller and install the
backup software. The software will scan/test for the installed tape
drive. If it is not found, configure the software manually and supply
the appropriate values for the I/O address, IRQ, and DMA settings.

Note: A diagnostics software such as MSD.EXE, Norton Utilities, PC
Tools, or Checkit can be used to find unused addresses, IRQs, and
DMA channels.


7. Parallel Port Tape Installation

a. Follow the instructions in the install guide and use the original
Iomega cable that came with your drive.

b. To verify that your printer port is working correctly, check the
printer port with a diagnostic utility such as CHECKIT or see if a
printer works from this parallel/printer port.

c. Use MSD.EXE or other utility to determine the address of the printer
port. Use this information to manually configure the backup software.

d. When manually configuring a parallel port tape drive, use IRQ 5 or 7
and I/O address 378h, 278h or 3BCh.


  24.  Using Removable Media Drives
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For your backup software to recognize and use a removable media
drive such as a Bernoulli drive, the drive must be locked.


  25.  Restoring Files with NetWare Delete Inhibit or Rename
       Inhibit Attributes
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During a Restore, you cannot overwrite files which have
the NetWare Delete Inhibit (D) or Rename Inhibit (R)
attribute set. To restore these files, you must first manually
remove the Delete Inhibit or Rename Inhibit attribute.


  26. Install: Selecting a Program Group
-------------------------------------------------------------------------------------
A modification has been made to the User Guide. In the topic,
"Beginning the Installation" the section "Selecting a Program Group"
has been simplified. During the Installation process setup asks,
"Do you want setup to create a program group and icons?".
You simply need to respond Yes or No. If you choose Yes, setup
will create a program group named Iomega Backup.
If you choose No, then a program group will not be created.


  27. Performance Issues on QIC-3020 Parallel Port Tape Drives
-------------------------------------------------------------------------------------
If you have a QIC-3020 Parallel Port tape drive you may
experience a performance limitation, especially on
systems with unidirectional parallel ports. This combination
may not transfer data from the tape drive to the system fast
enough to allow the tape to run continuously, or "stream."
However, if you reformat the tape using the QIC-3010 format,
the tape will run at half the speed of a QIC-3020 and stream
more of the time. This will result in faster net restore times
and less wear on the tape drive, but will cut the tape's
capacity in half.