About NTFS
Detailed specification of a NTFS data format, freeware reader for NTFS and shareware data recovery tools.
Inside NTFS
Learn how NTFS compares with FAT, investigate the design of NTFS on-disk data structures, and preview NTFS changes in NT 5.0.
NTFS Technical Documentation
Comprehensive information about the on-disk structures used by NTFS. Covers Windows NT and Windows 2000.