Macbook Air only boots to Macintosh HD/Options screen.
Hey all, I'm not entirely new to Mac stuff, but I'm also not great with it. I do tech support at a University and I've got a Macbook Air here that will only boot to the Macintosh HD / Options screen. Selecting Macintosh HD only reboots and comes back to this screen. Holding shift to boot into Safe mode does absolutely nothing when I click the button. I've tried reinstalling Sequoia a couple of times and that hasn't made a difference either. It's like it's not being told to boot from the hard drive.
What other options can I try? Thanks.