[Smartctl] Instruction check the health disk of Raspberry.
https://gist.github.com/meinside/0538087cc60a2f0654bb for testing external HDD with smartctl, install smartmontools $ sudo apt-get install smartmontools start test, $ sudo smartctl -t short -d sat /dev/sda $ sudo smartctl -t long -d sat /dev/sda -T permissive then it will say so wait for it… After its completion, $ sudo smartctl -l selftest -d sat /dev/sda -T permissive…
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