External drives · Ejecting and reconnecting
How do I eject all my external drives at once?
Short answer: Select the drives on the desktop or in Finder and press Command-E (File → Eject). Wait for every icon to disappear before unplugging a dock. Eject the Storage Studio drive from Storage Studio so apps running from it are quit first.
Select all the drive icons on your desktop (or in Finder) and press Command-E, or choose File → Eject. Each selected drive is ejected in turn. In the Finder sidebar, each drive also has its own eject button.
Before unplugging a dock with several drives, eject them all and wait for the icons to disappear. If one refuses because it's in use, see why a drive can't be ejected. For your Storage Studio drive, ejecting from Storage Studio first quits apps that run from it — see how to eject the fast drive safely.