Kevin
The 2gb file size limit is intrinsic to the files themselves, not to the OS.
Old timers will remember that memo files used to occupy 10 bytes in the .dbf. This was to allow back and forward links to assist with recovery as I recall, also possibly to allow much larger fpt files. I think it was FPW 2.6? that reduced the memo .dbf size to 4 bytes. Hence the 2Gb limitation, being the maximum signed integer you can express with 4 bytes.
FWIW you can have a 2Gb .dbf and a 2Gb .fpt. If you are getting anywhere near that point, though, you'd be well advised to look towards a Client/Server database IMHO.
Regards
JR
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1