Time machine "verify backups" is gray after holding Option key
iMac 27" using mac OS High Sierra v.10.13.3. Having trouble verifying backup with Time Machine with Seagate Backup Plus Drive for Mac. I've tried to hold down Option key after clicking on Time Machine icon in top menu. Verify Backups is grayed out. How can I verify backups?
iMac, macOS High Sierra (10.13.3), problem verifying Time Machine