Scan disk is used to repair bad sectors on the disk and can be done, by right clicking the drive partition, going to Properties, then Tools, then use the Error Checking feature, then check only the "Scan for and attempt recovery of bad sectors" option. This is what I think is a different feature from the scan disk option that summons the command prompt which finishes much faster. I have a screenshot of it. This one took me 9 minutes to complete. It is required to be done at least once a week if the computer is used everyday.
I also notice that whenever I try to analyze how much junk files I can clean by hitting the Analyze button, it has very different results when I actually perform the cleaning operations. Maybe they should make this more accurately.
Feedback please
