Disk Stuff
List disks:
fdisk -l
OR
df -h
Scanning
1 - Check if SMART scans are enabled
smartctl -s on /dev/sdX
2 - Run a test
smartctl -t DURATION /dev/sdX
Duration is either "long" or "short"
3 - Check results
smartctl -a /dev/sdX
S.M.A.R.T scanning
Scan a disk
sudo smartctl -t long/short /dev/sdX
Check scan results
sudo smartctl -ca /dev/sdX
Check scan progress
smartctl -c /dev/sdX