Format of IFS driver list:
Offset Size Description )
00h DWORD pointer to next driver header
04h 8 BYTEs IFS driver name (blank padded), as used by FILESYS command
0Ch 4 BYTEs ???
10h DWORD pointer to IFS utility function entry point (see #01658)
call with ES:BX -> IFS request (see #01660)
14h WORD offset in header's segment of driver entry point
???
SeeAlso: #01658,#01660