Minisd Memory Card

Minisd Memory Card
Anyone know how one can regain lost memory on a memory card?

I have a Minisd Memory Card 2 GB for my Cell Phone, especially for photos and music. Well I realized that it was picking up one of my folders, so I downloaded the panasonic formatter and used it to format the card. After doing so, I have lost 50% of my memory. Does anyone know how I can recover, even what happened?

Card is dead … consult a recovery service if you feel it is very important data (prices are very high, it is advised).

PSP Double Expand Memory Adapter Test01 Mini SD CARD