How can I change raw files to NTFS without losing data?

Step 1: Right click on the RAW drive in My Computer (This PC) or Disk Management. Step 2: Select "Format…". Step 3: Select NTFS file system and then set other information (Allocation unit size, volume label, format options) about format process. Step 4: Click on "Start" to format the RAW drive to NTFS file system.