UPDATE

hdparm -X69 -d1 -u1 -m16 -c3 /dev/hdg

-c3 = 32Bit-Sync

-c1 = 32Bit

-W0 = Disable the IDE drive's write-caching feature (usually OFF by default)

-W1 = Enable the IDE drive's write-caching feature (usually OFF by default)

Use -W0 or -W1 for HDD Only.

EAMPLE: hdparm -X69 -W0 -d1 -u1 -m16 -c1 /dev/hdg