Backup Problems with Colorado Trakker Drive on ECP or EPP Port (137697)
The information in this article applies to:
This article was previously published under Q137697 SYMPTOMS
If you have a Colorado Trakker tape drive installed in your computer, you
may receive the following message when you start Microsoft Backup:
The parallel port your tape drive is connected to is configured as an
ECP, Enhanced, or Bi-Directional port. Using your tape drive with this
configuration will not work reliably and you will not be able to
recover data from tapes. To use your tape drive without data loss on
this port, the port configuration must be changed to NON-ECP mode.
Even if you do not receive this message, you may not be able to back up,
compare, or restore files reliably using Backup. When you try to back up,
compare, or restore files, you may receive any of the following error
messages:
- Unable to transfer data properly. Retry the operation.
- Tape header contains unexpected or invalid values. Microsoft Backup
encountered an error reading this tape. This error may be caused by an
unformatted or incorrectly formatted tape. Reformat the tape, and then
try again.
NOTE: You may not receive any error messages when you back up files, but
you may then be unable to compare or restore the files. If you can restore
the files, the data that is restored to your hard disk may be damaged.
CAUSE
The problems described above can occur when you are using a Colorado
Trakker tape drive connected to a parallel port that is in extended
capabilities port (ECP) or enhanced parallel port (EPP) mode. Backup does
not function properly with Colorado Trakker tape drives connected to ECP
or EPP ports.
RESOLUTION
Configure the parallel port so that it is not in ECP or EPP mode. For
information about how to configure a parallel port on your computer,
please consult the computer's documentation or manufacturer.
MORE INFORMATION
Backup may be able to determine when a Colorado Trakker tape drive is
connected to an ECP or EPP port. When it does, it generates the message
stated earlier in this article. However, because of the lack of a standard
implementation for ECP and EPP ports, Backup cannot always detect an ECP
or EPP port. When Backup cannot detect that an ECP or EPP port is being
used, the problems described in this article can occur.
| Modification Type: | Major | Last Reviewed: | 12/17/2000 |
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| Keywords: | KB137697 |
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