Check Progress of Backup
I just hooked a backup drive (hard disk) up to my MacBook Air in order to back up my laptop. As soon as I did that, a light started blinking on the external hard disk. But I didn't get any prompts on my screen. I have used this same external disk in the past to backup my laptop.
How can I tell if it is actually backing up my laptop? I've tried going into Time Machine, but the only thing it shows is the latest complete backup and the 'cancel' & 'restore' prompts.
MacBook Air (13-inch Mid 2013), OS X Yosemite (10.10.5)