I'm using an ssd, and have 64gb set up for the dashcam. And I pulled it today to see what was on it after some 5 days of usage since updating. There was some 16 gb worth of stuff, mostly sentry mode recordings, I guess I'll have to purge those in a week or so. When I plugged the drive back in (leaving everything on there as is) I got the grey dot of doom - but tried the easy trick of pressing it, and it turned to red. Easy fix!