This paper discusses some of the possible ways to hide data on modern computer systems. Using HPA and DCO, hidden partition and other technical analysis of the disk drive data hidden. Using the cluster distribution, Slack space and so on technical discusses some of the methods that can be used to hide data in NTFS and analysis techniques that can be used to detect and recover hidden data. The exploration of the different hiding technology can be used as computer anti-forensics means, to the great impacts of computer forensics.