In this detailed guide, we will discuss how to:

Test SSD and HDD health using S.M.A.R.T. data,
Interpret S.M.A.R.T data (i.e understanding various S.M.A.R.T attributes),
Understand key warning signs of a failing drive,
Run Self-Tests using smartctl,
Scan for bad sectors,
Check File system integrity,
Setting up monitoring for SSD wear levels,
Troubleshooting common issues.