This method will help you convert your file system.
What is Difference between NTFS and FAT32.?
Volume size
FAT32 : Volumes size from 512 MB to 2TB. (but Windows XP, you can format a FAT32 volume up to 32 GB only.)
NTFS : Volumes size from 10 MB to 2TB and range upward. For example, a dynamic disk formatted with a standard allocation unit size (4 KB) can have partitions of 16 TB minus 4KB.
File size
FAT32 : Maximum file size is 4 GB.
NTFS : File size limited only by size of volume.
Maximum files per volume.
FAT32 : 4,294,967,295 files.
NTFS : 65,534 files or folders per folder.
If you want to convert file system following  this step -
First : Close all open applications.
Use command line to convert
“Convert volume /FS:NTFS” (replace volume with drive letter example d:)
That’s it. If there are open files on the volume being converted, you’ll have to reboot your system for the process to complete.
Command Option:
•/nosecurity for reset security can accesseble by everyone
•/X forces volume to dismount first
