The concern started with whether a portable HDD will be physically damaged or degraded if unplugged when the disk is still spinning. I understand that I can force unmount the device on Linux. However, let us suppose I am using the
smartctl command running a self test on the drive. Now, the drive is not mounted, so the system suggests it is safe to be unplugged. So if one forget there is still a test running, one may unplug it accidentally while the disk is still spinning.
- Is there a command that stops all reading/writing activities on the portable HDD and let the head park properly?
- Will unplug while spinning physically damge or degrade the HDD in use?