Helen Custer, an acknowledged expert on the Windows NT file system, has written two bestselling books about this subject. Her first book, Inside Windows NT (1992) was the original reference source for programmers and systems administrators using the advanced capabilities of Microsoft's NTFS file system. This technical summary of a then-new operating platform was updated in Custer's second book, Inside the Windows NT File System (1994), which outlines the development of the system and provides a practical guide for using it. The author describes the internal architecture, discusses data compression, and explains how NTFS recovers after a system failure. Custer has been acclaimed for her insightful, clear, and detailed treatment of a technically complex theme.