Which one of these filesystem format conversions will keep the data on disk, and which will require backup, reformat, and restore?
- FAT32 to NTFS
- FAT32 to FAT16
- NTFS to FAT32
- NTFS to FAT16
Note: I want to convert my disk with Command Prompt.
You can convert from FAT16, FAT32 to NTFS as detailed here. Doing this, like any partition operation, always carries the risk of data loss.
You CANNOT convert from NTFS back to FAT32, FAT16 without removing the partition and starting fresh.