I belive Unixware partition support is in (make
menuconfig) File Systems ->
Partition Types -> PC BIOS -> Unixware slices support, and filesystem
support is under Miscellaneous -> System V/Xenix/V7/Coherent file system
support.
Yes, UnixWare is (pretty straight SysV.4, [SCO's marketing would be quick to
point out that it is now SysVr5 because they say so] decended in a right true line from
AT&T
System V release 4 through USL and Novell), but my impression was that the system
in question was SCO UNIX, an entirely different beast (bears more in common with
XENIX). SCO UNIX begat their OpenServer line.