File and Directory Management Transparency (Standard 7 SP1)
7/8/2014
Applications and OS components make file and directory management calls without knowledge that writes are being cached by FBWF. FBWF provides a composite view of the file system without imposing limitations on user mode applications. Applications perform explicit file I/O through functions such as CreateDirectory, CreateFile, ReadFile, and WriteFile. These calls appear to interact with the file system but may result in overlay cache I/O.
The following directory management operations may result in error:
- Moving files across protection boundaries, for example, from a protected volume to an unprotected volume.
- Committing deleted files or new directories.
FBWF supports NTFS, FAT32, and exFAT file systems.
FBWF can protect formatted volumes only. FBWF cannot recognize unformatted volumes.
Files in FBWF overlay cache are not encrypted.