External drives · Checking your drive
How do I see how much free space is left on my fast drive?
Short answer: The popover's fast drive card shows free and total space beside the Internal card; Inspect fast drive shows both drives in detail. The card greys out with a dash when the drive isn't connected.
The menu bar popover shows it at a glance: the fast drive card has a bar with free and total space, next to the Internal card for your built-in drive. The status block's fast drive row also shows the drive's name and free space when it's connected.
For more detail, open Inspect fast drive, which lists free and total space on both drives. When the drive isn't connected, the card is greyed out and shows a dash.