SCO Unix/Open Desktop/OpenServer release-to-release upgrade chart 97/10/07
================================================================= ========

  SCO Unix 3.2.0                 -IPU-> 3.2v2.0
  SCO Unix 3.2v2.0               -IPU-> 3.2v4.0
  SCO Unix 3.2v4.0               -SUP-> 3.2v4.1  (use MSv4.1)
  SCO Unix 3.2v4.0               -SUP-> 3.2v4.2  (use MSv4.2)
  SCO Unix 3.2v4.1               -SUP-> 3.2v4.2  (use MSv4.2)
 [SCO Unix 3.2v4.1 or earlier    ~N/A~> OpenServer Release 5.0.0 or later]
  SCO Unix 3.2v4.2               -IPU-> OpenServer Release 5.0.0
  SCO Unix 3.2v4.2               -IPU-> OpenServer Release 5.0.2
  SCO Open Desktop family 1.0    -IPU-> 1.1
  SCO Open Desktop family 1.1    -IPU-> 2.0
  SCO Open Desktop family 1.1    -IPU-> 3.0
  SCO Open Desktop family 2.0    -IPU-> 3.0
 [SCO Open Desktop family <= 2.0 ~N/A~> OpenServer Release 5.0.0 or later]
  SCO Open Desktop family 3.0    -IPU-> OpenServer Release 5.0.0
  SCO Open Desktop family 3.0    -IPU-> OpenServer Release 5.0.2
  SCO OpenServer Release 5.0.0   -IPU-> OpenServer Release 5.0.4
  SCO OpenServer Release 5.0.2   -IPU-> OpenServer Release 5.0.4
 [SCO OpenServer Release 5.0.x   ~N/A~> Internet FastStart 1.x.0]
  SCO Internet FastStart 1.0.0   -SUP-> 1.1.0  (use IFS 1.1.0 Supplement)
 [SCO Internet FastStart 1.x.0   ~N/A~> OpenServer Release 5.0.4]

-IPU-> In-place upgrade possible (start full OS install of target
       release, by booting N1 or N00 floppy; it will prompt you whether
       you want to upgrade)

-SUP-> In-place upgrade by installing supplement (named at end of line)

~N/A~> Upgrade not possible in a single step (may be possible via
       intermediate steps; but as in-place upgrades are always a little
       shaky, you probably don't want to compound then -- better to do
       fresh-install and migrate applications & data)

"Open Desktop family" = Open Desktop, Open Desktop Lite, Open Desktop
       with Server Supplement, Open Server Network System, and/or Open
       Server Enterprise System (different titles available at
       different release levels).

"OpenServer" = OpenServer Host, Desktop, Enterprise Systems.  A license
       is required to do an upgrade, and must be purchased for the
       specific upgrade path (e.g. SCO Unix 3.2v4.2 -> OpenServer Host
       System 5.0.2 would require a different license than SCO Unix
       3.2v4.2 -> OpenServer Enterprise System 5.0.2)

>Bela<