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The FSCTL_GET_VOLUME_BITMAP control code retrieves a bitmap of occupied and available clusters on a volume.
Major code
FSCTL_GET_VOLUME_BITMAP
Remarks
To perform this operation, call FltFsControlFile or ZwFsControlFile.
See FSCTL_GET_VOLUME_BITMAP IOCTL (winioctl.h).
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP |
| Header | ntifs.h |