FSUTIL

(from File System Utilities)

Displays or configures file system properties.

FSUTIL [parameters]

Where:

  • parameters - These are the FSUTIL command parameters. The first of these must be an FSUTIL subcommand, one of the following:
    • 8DOT3NAME - Displays or modifies settings for short name (8.3 name) behavior.
    • BEHAVIOR - Displays or sets NTFS volume behavior.
    • BYPASSIO - Manages BypassIo status for specified files or directories.
    • DAX - Manages DAX volumes.
    • DEVDRV - Manages developer volumes, which are optimized for development purposes.
    • DIRTY - Displays or sets the "dirty" bit of a volume. When set, AUTOCHK will automatically scan the volume on the next system startup.
    • FILE - Finds a file by username, shows allocated ranges for a file, sets a short name, sets valid data length, sets sparse data, or creates a new file.
    • FSINFO - Lists all system drives, displays drive types, shows volume info (including NTFS-specific), or file system statistics.
    • HARDLINK - Creates a hard link between an existing file and a new one.
    • OBJECTID - Manages object identifiers (OIDs). These are invisible to most programs and should not be modified.
    • QUOTA - Manages disk quotas on NTFS volumes to allow more precise control of network-based storage usage.
    • REPAIR - Administers and monitors NTFS self-healing. NTFS self-healing attempts to fix potential corruption online without running CHKDSK.
    • REPARSEPOINT - Displays or deletes NTFS reparse points.
    • STORAGERESERVE - Displays or restores a volume's storage reserve areas.
    • RESOURCE - Creates a secondary transaction resource manager, starts or stops it, displays info, or modifies its behavior.
    • SPARSE - Manages sparse files. A sparse file contains one or more unallocated regions.
    • TIERING - Enables tiered storage management such as setting/disabling flags and listing tiers.
    • TRACE - Decodes NTFS trace information, displays trace status, and starts/stops NTFS trace sessions.
    • TRANSACTION - Manages NTFS transactions.
    • USN - Manages the Update Sequence Number (USN) change journal.
    • VOLUME - Dismounts a volume or investigates disk usage, such as free space or which files occupy a given cluster.
    • WIM - Functions to discover and manage Windows Imaging (WIM)-based files.

For more details on how FSUTIL subcommands work (which are beyond the scope of this guide), visit the related page on Microsoft Learn - FSUTIL.

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