NT Disk Viewer allows users to display hard-disk data by physical sectors (in hex-code or ascii). Sectors can be copied and exported to files. The software supports FAT and NTFS file systems.

Really useful when doing a "low-level" disk investigation and verification the effectiveness of file and disk wiping programs. NT Disk Viewer designed for developers and technical specialist who need access to physical sectors of hard drive.

Portable as it uses a single exe file, have a very simple, user-friendly interface.