HPFS

from The Free On-line Dictionary of Computing (8 July 2008)
High Performance File System
HPFS

   <file system> (HPFS) The {native} {file system} for {IBM}'s
   {OS/2}.

   (1995-03-06)
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
HPFS
       High Performance FileSystem (OS/2)
antiflux / dictionary / HPFS
[email protected]