About the Upgrade installation option

The Upgrade installation option leaves all non-root filesystems and partitions on your system as they currently are. On the root filesystem, it removes the old SCO OpenServer system and installs new versions of the previously installed packages, as well as any software that is new in Release 5.0.7.

The Upgrade installation option is available if:

• your previous installation is listed in ``Supported paths for the Upgrade installation option'', and

• your hard disk has sufficient space available for SCO OpenServer Release 5.0.7 (see ``Disk space requirements for the Upgrade installation option'').

Supported paths for the Upgrade installation option

If you are upgrading from:	You can upgrade to:
SCO OpenServer 5.0.5 Host	SCO OpenServer 5.0.7 Host
SCO OpenServer 5.0.5 Desktop	SCO OpenServer 5.0.7 Desktop
SCO OpenServer 5.0.5 Enterprise	SCO OpenServer 5.0.7 Enterprise
SCO OpenServer 5.0.6 Host	SCO OpenServer 5.0.7 Host
SCO OpenServer 5.0.6 Desktop	SCO OpenServer 5.0.7 Desktop
SCO OpenServer 5.0.6 Enterprise	SCO OpenServer 5.0.7 Enterprise

If you want to take this opportunity to upgrade to an Enterprise System configuration as well, see ``Upgrading to the Enterprise configuration from Host or Desktop''.

For example, if you currently run SCO OpenServer Release 5.0.6, you can select the Upgrade installation option even if you purchased a full Release 5.0.7 license.

On the other hand, if you purchased an upgrade from SCO Open Desktop Release 3.0, you are not able to use the Upgrade option. Instead, you must select the Fresh installation type, then choose the option under Hard disk setup that is most appropriate for your upgrade -- probably Preserve.

If you want to use the Upgrade option, you must provide licenses for both the original system and the new system to which you are upgrading. Please have this information ready before proceeding with the upgrade installation.

Disk space requirements for the Upgrade installation option

Because the default configuration for SCO OpenServer Release 5.0.7 is larger than the default configuration for SCO OpenServer Releases 5.0.5 and 5.0.6, the root filesystem on your primary hard disk might not be large enough to hold the upgraded system. See ``Determining disk space requirements'' for space requirements.

If you want to choose the Upgrade option, but your root filesystem will not hold the new release, you have three options:

• Increase the size of your root filesystem by reconfiguring your hard disk.

• Install a larger primary disk.
  

• Install components of the new system on non-root filesystems. If your total disk space is sufficient and you have available partitions, the installation prompts you to relocate components to other filesystems (including filesystems on non-primary disks).

Do not rely on being able to put additional data (such as user accounts) on the filesystems you choose for relocation. The relocation program uses nearly all the space in the chosen filesystems, in an attempt to create free space in the root filesystem.

Only filesystems in /etc/default/filesys are offered for relocated components. If you want to relocate components to filesystems that are not displayed at this stage of the installation, abort the installation, reboot your previous system, and run mkdev fs to place the filesystems in /etc/default/filesys.

See ``Upgrades and the relocation of software'' for more information on relocated filesystems.

Data retained with the Upgrade installation option

User data retained on the root filesystem in an Upgrade installation includes:

• home directories

• user-created files and directories

• user IDs

• group IDs

• passwords

• file permissions

• mailboxes

System data retained on the root filesystem includes:

• system configuration files

• job scheduling files

• filesystems

• filesystem nodes

• mount points

• terminal control database

• auditing parameters

• file control database

• system defaults

• mail aliases

• configuration files for incoming and outgoing PPP lines

• UUCP dialer files

Recovering from a failed Upgrade installation

If an Upgrade installation fails, the installation program attempts to restore the previous system. The program displays a message about the expected state of the system, depending on the phase in which the upgrade failed.

You may need to perform a Fresh installation and restore your user data from backups.