I held off on posting this in order to give the the folks at Garmin a chance to investigate the issue, but the story can now be told. As I was wrapping up my nuvi 3750 review, I had the unit connected to my computer, when Windows 7 popped up the above message. I suspect that I had improperly ejected the unit at some point, causing this. I had ran CHKDSK before on various units, with no deleterious results, so what the hey, I said okay. But when I got to my car, I saw a blank screen with my position and no detailed maps. I looked under Tools > Settings > myMaps and it said there weren’t any! Uh oh.
So I called Garmin support (they were great, BTW, even though the call and subsequent transfer to their software support team took over an hour) and they said they could fix it, but it would have to be registered first. Since it was a loaner and not mine, and I was basically done with the review, I simply returned it to my contact there. Once back in their hands, the nuvi team had a look at it, but were unable to recreate the problem on another unit, nor could anyone recall being asked to run CHKDSK on a nuvi. They recommended that I not run CHKDSK on one of their units without further investigating why it is being prompted.
So my question for you, dear readers, is – have you ever ran into this; have you been asked to run CHKSDK on a GPS receiver? On a nuvi? If you did it, what was the result? I’m sure there are folks in the audience who know a lot more about CHKDSK than me, so have at it in the comments. Let’s hash this out.
Finally, this isn’t about the nuvi; I suspect it could happen with any device. One moral of this story is to backup your device; ideally when you first get it. It takes some time and a bit of hard drive space, but it can make recovery from such things much easier. Just copy everything on the device over to your computer. Previously, I would recommend this for folks who were messing around with maps, or trying to free up space, but after my recent experience, I’d say it’s a good idea for everyone.