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Iomega Backup for DOS, Version 3.0

Copyright 1993, Iomega Corporation and 
Quest Development Corporation.
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This file contains important information that became
available after the written documentation was completed.

The following subjects are discussed:

1.  Installation
2.  Reading Irwin AccuTrak Tapes
3.  Memory Requirements
4.  Tape Format Incompatibilities
5.  Tape Despooling
6.  Compatibility Test Failure
7.  Running Iomega Backup under DesqView
8.  Compressed Drives
9.  Installing Iomega Backup on a System with Stacker
10. The DOS Append Command
11. Setup File Compatibility with Iomega Backup for Windows
12. Laptop Power Management Conflicts

To print this file, type COPY README.TXT PRN at the DOS
prompt.

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1.  Installation
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Iomega Backup for DOS will not install or operate correctly 
from a DOS box within Windows. It must be installed and operated
directly from the DOS prompt. 

The FILES command in your CONFIG.SYS file must be set to 10
or more files.

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2.  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 Irwin from the Tape
Tools 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.

Iomega Backup for DOS, Version 3.0, cannot read or
restore encrypted Irwin backup sets. You must use the program
originally used to encrypt the backup sets to decrypt them.

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3.  Memory Requirements
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Iomega Backup for DOS requires at least 512K of free memory.
Some parallel port tape drives may require up to 520K to work.
To check your free memory, type MEM at the MS-DOS prompt. To
free memory, remove any TSRs before running Iomega Backup.
See your system documentation for other methods.

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4.  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.

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5.  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 reboot your system to clear the 
drive.

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6.  Compatibility Test Failure
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The compatibility test consists of a small backup and
compare, automatically performed by Iomega Backup to verify
that reliable backups can be performed with your current
configuration.

The most common cause of compatibility test failure is DMA
error.  Therefore, when the compatibility test fails, Iomega 
Backup automatically resets the DMA (Direct Memory Access)
to Low Speed.

During installation, other factors may contribute to 
compatibility test failure.  For this reason, the following 
procedure is recommended if the compatibility test fails
during installation:

    1. Complete the installation
    2. Restart Iomega Backup
    3. Choose Configure
    4. Choose Configuration Tests
    5. Set the Direct Memory Access to High Speed
    6. Redo the compatibility test

If the compatibility test fails again, follow the guidelines
presented in the on-line help, available by pressing F1.

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7.  Running Iomega Backup under DesqView
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To run Iomega Backup under DesqView, make the following
selections in DesqView:

    Create an entry in the Program Menu for Iomega Backup.

    Under Advanced Options, specify that Iomega Backup
     cannot share CPU when in the foreground, and that
     it cannot run in the background.

    Select Uses Its Own Colors.

    Set the Memory Size option to 512 K.

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8.  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.

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9.  Installing Iomega Backup on a System with Stacker
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If you have Stacker software installed on your computer,
you may not want to let Iomega Backup make changes to your
AUTOEXEC.BAT file.  Some versions of Stacker create their
own AUTOEXEC.BAT file which should not be modified, and it
is this file that Iomega Backup will find.  

You can tell if this is the case on your computer if, during
Iomega Backup installation, the AUTOEXEC.BAT file that is
displayed says "DO NOT MODIFY THIS FILE."  In this case, you
will need to find your original AUTOEXEC.BAT file and make
the following changes:

   Add the Iomega Backup directory to your PATH statement.

   Add the command "SET QBACKUP=path_name"

        where path_name is the directory you want Iomega Backup
        to use for setup and catalog files
 
   If you want to load the Backup Scheduler each time you
    start your computer, add the command QSCHED as the last
    command in your AUTOEXEC.BAT file.

For more information on loading the Backup Scheduler, see the
help topic "Installing the Backup Scheduler TSR."

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10. The DOS Append Command
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If you use the DOS Append command with the /X or /X:ON
option, when you perform a restore, some files may not be
restored.  This is because of the way DOS reports names of
existing files when this command is in effect.

It is highly recommended that you deactivate the Append /x
command before performing restores.

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11. Setup File Compatibility with Iomega Backup for Windows
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Iomega Backup for Windows, version 3.0, can read, use, 
and modify setup files created by Iomega Backup for DOS, 
version 3.0.  If you have made individual file or directory
selections in a setup file that is opened and resaved by
Iomega Backup for Windows, you may notice that some
filenames and directory names are displayed in a different
color (red if default colors are used).  This display change
will not affect the selections.

Iomega Backup for DOS, version 3.0, can use setup files
created by Iomega Backup for Windows, version 3.0,
with the following limitation:

   Individual file and/or directory selections made with
   the keyboard or mouse will not transfer from the Windows
   setup file to the DOS setup file.

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12. 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.



