Before installing or upgrading

Determining disk space requirements

This section discusses how disk space is allocated during an SCO OpenServer installation, and helps you estimate how much disk space your specific installation will require. The three different installation options are covered:

Note that the sizes discussed here are representative and might not be the same on all systems.

Fresh installation type

A default Fresh installation requires a minimum of:

The root filesystem can be made much larger than the approximately 600MB of space required to accommodate the software installation, up to a maximum filesystem size of 1GB. (Note that, depending on the number of files in a filesystem, the maximum usable filesystem size is around 350MB.)

The layout of the root filesystem can be controlled manually at installation using the Interactive fdisk/divvy disk setup; for more information, see ``Partitioning a hard disk using fdisk''. The /stand (boot) filesystem must be large enough to hold three kernels, plus some extra software. It defaults to 15MB; we strongly recommend at least 10MB.

The default minimum swap space presented during installation is 24MB. To accommodate more than one graphical user, we strongly recommend that you specify swap space that is 150% to 200% as large as the RAM in your system. For non-graphical systems, we recommend swap space that is 150% as large as the system's RAM.

The following products all require additional space in the root filesystem:

For Add
GNU Development Tools 51MB
NeTraverse Merge 12MB
Samba 19MB
SCO Advanced File and Print Server 35MB
SCO OpenServer Development System 63MB
SCO PPP from Morning Star 3MB
SCO Symmetrical Multiprocessing Support 9MB
SCO Virtual Disk Manager 4MB
Squid Web Proxy Server 2MB
French language support 17MB
German language support 17MB

Preserve hard disk setup

Within a Fresh installation, you can choose the Preserve hard disk setup (see ``Choosing an upgrade path''). For a Preserve setup, the required disk space on the root filesystem is the same as for the Fresh installation (described above), plus the amount of swap space already configured on the system. The recommended space goes entirely to the root filesystem; Preserve does not create a /stand filesystem.

Upgrade installation type

For an Upgrade installation, your new system software is installed either in the root filesystem (the default) if there is enough free space in that filesystem, or in root and another filesystem with free space. If you do not have enough free space in root, the installation procedure automatically detects this and prompts you to relocate parts of your new software. If your total disk space is insufficient, see ``Adding a disk for an upgrade''.

CAUTION: Once you choose to relocate software during installation, you cannot reverse this action from within the current installation procedure. To cancel software relocation, abort the current installation procedure, reboot the system, and select the Fresh installation type.

Before you proceed with software relocation, carefully read ``About the Upgrade installation option''. Relocating software to the wrong filesystem can cause serious problems.

To install the SCO OpenServer product entirely in the root filesystem, you must have at least as much free space as listed for your scenario in this table:

To upgrade from To SCO OpenServer Free
Release 5.0.5 or 5.0.6 Release 5.0.7 space
SCO OpenServer Enterprise System Enterprise System 260MB
SCO OpenServer Desktop System Enterprise System 240MB
SCO OpenServer Host System Enterprise System 160MB

If you do not have enough free space in the root filesystem and choose to proceed with the installation by allowing software to be relocated into another filesystem with enough free space, you still need 50MB of free space plus 17MB per language in your root filesystem, plus the amount listed above for your upgrade scenario.

If you intend to install software beyond the basic system configuration, you need additional space in the root filesystem, as specified in the table of additional disk space.

If you have additional system software on the root filesystem before the upgrade, increase the minimum required root filesystem space by the amount used by that additional software. For example, if the system from which you are upgrading has the SCO OpenServer Development System installed, you need an additional 63MB of space for your root filesystem.

If you upgrade a system that has the Localized Desktop installed, both the French and German language support products are installed. Therefore, in such an upgrade, make sure you have sufficient disk space for both language support products.

See also ``Notes for the Upgrade installation option''.

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Previous topic: Installing on 32MB systems

© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003