Most likely you accidentally deleted DriveSecurity application from the drive, but don’t worry – you can download it again from here, your license will be automatically recovered.

Mostly likely your license has expired (possibly your 30-day FREE TRIAL has expired or your license failed to renew).

Sure. DriveSecurity is a portable application designed to be interrupted (drive unplugged) anytime that your operating system isn’t interacting with the drive.

A first line of ToolTip (mouse-over) on the DriveSecurity icon in the Windows notification area displays the version number (for example, 3.0). If ToolTip (mouse-over) doesn’t show version number then you have an older version (2.X and below) that displayed on the bottom right of the main dialog:

If DriveSecurity finds an infected file, you’ll see a red entry in the list stating Infected file. DriveSecurity will automatically delete the infected file from the drive.

If DriveSecurity installs satisfactorily, it will scan the portable drive, and display a notice of infection; see “What if one of my files has a virus?” above.