The Tru64 UNIX Update Installation procedure lets you upgrade your
system from an earlier version, while preserving disk partitions, file systems,
file customizations, the network print, and mail environments, user accounts,
user created files, and any other system setup you may have done.
Table D-1
lists the supported upgrades for Tru64 UNIX releases.
(See the Tru64 UNIX
Installation Guide
for more information.)
Table D-1: Upgrade Migration
| Version | Upgrade Migration Supported |
| V5.1A | From 4.0G and 5.1 |
| V5.1 | From 4.0G and 5.0A |
| V5.0A | From 4.0F and 5.0 |
| V5.0 | From 4.0D and 4.0F |
| V4.0G | From 4.0E and 4.0F |
| V4.0F | From 4.0D and 4.0E |