There are two ways in which files are stored in memory card, FAT and NTFS. NTFS has some advantages over FAT file system like security of data, speed and consistency of data. But it is better to use FAT file system because it is compatible with Microsoft Windows and other OS.
At times, you wish to convert file system. This can lead to deletion of files from the memory card. However, you can retrieve these files from Memory Card Recovery. Conversion from FAT file system to NTFS file system must be avoided for two reasons. Firstly, it decreases the speed of data transfer and secondly all photos, videos, audio and RAW files will get deleted.
deleted memory card recovery will rescue you from this situation and get back all the needed deleted files. Memory Card Recovery after format will recover the files lost after accidental format of the memory card.