How can I stop NT from generating LFN's (Long File Names) on a FAT partition?

A. Using the registry editor change the value HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlFileSystemWin31FileSystem from 0 to 1 and only 8.3 file names will be created.

The reason for not wanting the LFN's to be created is that some 3rd party disk utilities that directly manipulate FAT can destroy the LFN's. Utilities such as SCANDISK and DEFRAG that come with DOS 6.x and above do not harm LFN's.