You might confirm what's going on with one of the little progams that were recommended to me on this forum.
mixture's
HddLed Indicator - Hard disk drive activity software led indicator with separate read and write operations in real-time.
Holding the cursor over the LED will show the details. It's odd, but one load of the soft gave me which drive by number ie 0 or 1 pertaining to the physical drive more than the partitions. The other one give all the partitions.
and
Bushfiver's one, on my thread
Seeing a HD run...a page back.