Parted 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.html
Disk Wiping > Darik's Boot and Nuke (dban) → 消去
https://pctrouble.net/software/dban_ubcd.html
