Sessions & Tracks : DigiBase : Workspace Browser : Mounting and Unmounting Volumes

Mounting and Unmounting Volumes
The Workspace browser lets you unmount volumes while Pro Tools is running, and shows newly mounted volumes as they come online.
To unmount a volume from within the Workspace browser:
1 Select a volume in the Workspace browser.
2 Choose Unmount Volumes from the Browser menu.
The Workspace browser closes the database file for the selected online volume and removes it from the Workspace browser, and unmounts the disk from the computer.
Pro Tools alerts you if the volume being unmounted has files referenced in the Timeline.
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Always use the Unmount command in the Workspace browser menu to unmount volumes, or quit Pro Tools and then unmount the volume. Do not use any other method to unmount a volume while Pro Tools is running.