MOUNTVOL – Windows CMD Command

Link volumes without requiring a drive letter. Create, delete, or list a volume mount point. NTFS junction mount points can only be used with local NTFS directories, (unlike DFS junction points which will target a network share). MOUNTVOL can be found on the Windows CD i386 folder.

The GUID is used to identify a unique volume even if the drive letter changes.

If other processes are using the volume, mountvol closes any open handles before dismounting the volume.

Volumes that are dismounted by using /p are listed in the volumes list as “NOT MOUNTED UNTIL A VOLUME MOUNT POINT IS CREATED.”
If the volume has more than one mount point, use /d to remove the additional mount points before using /p. You can make the basic volume mountable again by assigning a volume mount point.

If you need to expand your volume space without reformatting or replacing a hard drive, you can add a mount path to another volume. The benefit of using one volume with several mount paths is that you can access all local volumes by using a single drive letter (such as C:). You do not need to remember which volume corresponds to which drive letter—although you can still mount local volumes and assign them to drive letters.

When using junction points:
• Use NTFS ACLs to protect junction points from inadvertent deletion.
• Use NTFS ACLs to protect files and directories that are targeted by junction points from inadvertent deletion or other file system operations.
• Never delete a junction point by using Explorer, a del /s command, or other file system utilities that walk recursively into directory trees. These utilities affect the target directory and all subdirectories.
• Use caution when you apply ACLs or change file compression in a directory tree that includes NTFS junction points.
• Do not create namespace cycles with NTFS or DFS junction points.
• Put all your junction points in a secure location in a namespace where you can test them out in safety, and where other users will not mistakenly delete them or walk through them.

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