Win8 how to delete those folders that can not be deleted

Two days ago, the heart of the disk installed win8, after that is to install the software, but later found that my PS installation directory is not suitable, so I want to cut to other directories, but can not move, I just want to delete the reload first, should I uninstall it before I can delete it, but it turns out that it is not so simple, it can't be deleted!

Click to continue

The following is the solution process (win7 is similar):
Mouse moves to the bottom left corner

right>>"Command prompt (admin)> Use the cd command to enter the previous folder you want to delete Layer directory.
Then try the del command to delete:

I found del not! So I tried it with the rd command

Then there is then, haha, it is really successful!