Format of NetWare "File Server File Copy" request buffer:
Offset	Size	Description	)
 00h	WORD	source file handle (as returned by AH=3Ch or AH=3Dh)
 02h	WORD	destination file handle
 04h	DWORD	starting offset in source
 08h	DWORD	starting offset in destination
 0Ch	DWORD	number of bytes to copy