Suddenly a weekend, Windows unbootable system corrupted .. .. I find bad sectors on the disk ,. I managed anyway to copy everything on ddrescue with knoppix and repair both disk with chkdsk, I found my windows and all my data. Unfortunately HDTune confirms the corrupt blocks 26 .. WORST tool WD has lifeguard échou each test and can fix anything ..
Exchange collateral being .. i hope it will go well .. I would have preferred a refund and buy a Hitachi ..