CHKDSK /R (R for repair). Not sure if OP checked the box to run CHKDSK repair. I did provide links for CHKDSK tutorials. If I understand this correctly, the OP is receiving a warning message after install of ARONIS. He called, Aronis support after getting the warning message to find out what was wrong. The tech ran a scanner which indicated a possible problem with the HDD. This is where we are at this point. Thanks, for the assist.