Int 2F Fn FE03  U - Norton Utilities 5.0+ Tsrs - Flush Buffers             [U]

   AX = FE03h
   DI = 4E55h ("NU")
   SI = TSR identifier (see #2811)

Return: SI = TSR reply (lowercase version of entry SI, i.e. SI OR 2020h)
   AX = status
       0006h successful???

Notes: only supported by DISKMON, FILESAVE, and NCACHE-x
   useful for flushing NCACHE before rebooting

See Also: AX=FE00h,AX=FE10h