What is MFT Free Space on NTFS Drives Lot of users use NTFS file system rather than FAT32 file system since it supports large drives, offers better performance and encryption of files and folders. MFT means Master File Table which contains index of files on NTFs drives. As computer overwrite and delete files, MFT will be filled with free space which will contains index of pointers to deleted files, you can now set CCleaner to wipe this MFT free space. |