i used 2gb memory card for 5 months in my HTC mobile, i have unmounted it and removed it safely to replace it with 16gb. but now when i try to connect the 2bg card to system and copy the images through adapter, they are lost...every other data is there except the Pics which i took using camera. please help me to recover that pics
If all the other data is there and you have not deleted the pictures, then the pictures must be there in the sdcard, unless someone else deleted them or moved them.
Try inserting the old sdcard into the phone and see if the phone displays your pictures. If it does, connect your phone to PC in camera mode and save all pictures to your PC.
If the phone also does not show the pictures, you can try the Dara recovery as suggested by Mr.Tech
If you have not overwritten the data in the 2GB memory card, then you can recover the pics using "Recuva" in Windows PC. The software is available for free download online. Install the software, connect the adapter, select the drive through the application's interface and you will be able to recover the pics.
I assume (only assume, not sure) that those pictures are not on your external memory card but on your internal one (often referred as SD card).
If you haven't configured the camera to explicitly use your external SD card, all your pictures are on your phone's internal storage, independently of your external one.
Look at your pictures folder on your internal storage. There is a good chance that you missing pictures are there.