## Physical Device Driver Reference

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### DSK_UNLOCKDRIVE (01h) - Remarks

This function releases a lock on a volume in a drive, thereby allowing I/O from other processes to that volume again. The locked volume represented by the file handle on which this function is issued, must be in the drive.

Notice that this function must be called after accessing a drive that was locked with DSK_LOCKDRIVE before closing the drive with DosClose.