Why is mai ssD almost full?
My [new, external] SSD in iMac shows I have 10 gig in Apps. 18 in library, 15 in System, and 13 in User. Yet the SSD (per Mack Storage Manage) seems to have only 18 gig out of 479 gig available. What's taking up all that space? Is there anything I can do about it? This is with Big Sur.