Appeal No. 1997-3425 Page 3
Application No. 08/087,824
BACKGROUND
The rapidity with which data processing systems are
developed and enhanced has created the need to upgrade
software employed in the systems. Software installation
packages automate the performance of such upgrades. An
inherent danger in such automation is that an updated or
enhanced version of software may not operate properly with
other software in a system. Without having created a backup
of the previous version of the software, a user cannot reverse
such an upgrade.
The invention at issue in this appeal automates the
installation of software in a way that is selectively
reversible and does not require a user to create a backup of
software. It also maintains and catalogues versions of
software within tape drives. Specifically, the invention
employs a removable tape cartridge that includes at least one
alternate version of selected software. When the cartridge is
inserted into a tape drive, the user is prompted to select an
alternate version of the selected software for installation.
Before installing the alternate version, the version currently
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