SASParted Magic > console > smartctl -a /dev/sda Erase disk > Write zeros to the entire drive using 'dd'Diagnosis > HDAT2 → 不良セクタ診断 http://pc-sensei.com/ubcd/hddtest/hdat2 https://jisaku-pc.net/free-soft/hdat2.htmlDisk Wiping > Dari…