How to enable lumia 520 phone memory as mass storage?

[muhannedkp]

I am having windows 8.1 preview

 

[Harrie-S]

It's not possible but why do you want it.
You can just connect it to your PC and your PC will recognize your phone.

 

[xandros9]

I want mass storage because it's recognized by more stuff and isn't dog slow.

it can do more than one thing at a time too.