After doing an upgrade, I decided to move my pi to a new location so I shut it down. All seemed well, no error messages from the upgrade and the shutdown went as you would expect. I've now moved the pi to the new location but when I plug it in all I get is the red pwr light and it doesn't boot. I've had a look at the sd card on my laptop & all seems well, nothing obviously corrupted, I can mount & view both the partitions. Gparted also mounts & views the sd card.
What else can I check & do before reformatting & starting again