Pen drive showing less space

[rohitshakti2]

I am using 2 GB pen drive and now when I connected it to my pc it is showing only 49 mb and rest of the space as unallocated when I saw it in managing the hdd as below. Pls tell how to get the rest of space back.

 

[SaiyanGoku]

just extend the previous partition.

 

[$hadow]

Reallocate the space using using the allocation tools.