 how to check a hard, external, or SSD drive for surface defects or bad sectors, and fix them with a free program called Victoria – Start Victoria as administrator. In the standard tab that opens, we can see the list of all drives with smart tab, shows the drive status, now let us move to the most important tab – Tests, which actually examines the disk for bad sectors. Click on Start. The sectors shown in orange are supposed to have problems, and while red or blue ones are damaged, that is, bad sectors. Green sectors have a certain response delay, but they don't need correction yet. You can use Hetman Partition Recovery to recover data lost because of bad or damaged sectors in your hard drive.