how to connect my phone to my laptop as harddrive

[Z7]

i want to recover deleted photos from my Xperia U But i cant connect it to my laptop 

give me solution ??????

how can i connect my phone as hard drive thus data recovery software can scan it ......
when i connect iut my device connected as portable device ..................

Spoiler

[Uliwooly]

http://talk.sonymobile.com/t5/Xperia-U/Data-Recovery-Help/m-p/309722/highlight/true#M19261

[_alexdon_]

Try to enable usb debugging mode.