Joe, a technician, receives an error message on his tower PC just after POST which reads:
“WARNING! Your drive is about to fail. Please back up your data and run full drive diagnostics.”
Which of the following is generating this error message?

A.
CHKDSK

B.
S.M.A.R.T.

C.
eSATA

D.
QoS

Explanation:
http://www.howtogeek.com/134735/how-to-see-if-your-hard-drive-is-dying/