External Hard Drive At Costco

Hitachi 250GB Red External contribute to the unit?

I bought a portable hard drive from Hitachi, red, 250GB at Costco. Got the installation and everything. When I open a few folders and files inside. So my question is: 1) I can delete folders and files or stay? 2) How can I remove the disk before I sign? I can not see a delete option when you right click on the unit. Someone else has one of these I can answer? A misunderstanding. The unit is brand new, sealed. And I'm talking about files and folders appear in Flash video introduction to the type of unit and how to use it.

If the player does not appear as it comes with some software, chances are you have a record someone else has used the data on this subject. If this bothers you, I would like to take to Costco. If not, delete Excel files.