Insertion of Micro SD card into Garmin 3790T

It works like the clicker on a ball point pen. Click it to lock it in place. Click it again to eject. If it doesn't go in easily, you might have it upside down. Garmin isn't consistent on this across models. On my 855, the micro SD goes in with the contacts up, printed side down. On my 755T the SD goes in contacts down, printed side up. Go figure.

The card can only go in one way. You have to "gently" push it in with your fingernail. It should be just about flush with the case.

Yep, took pushing with just my nail until I heard the click and then another push with the nail to "unseat" and eject it.

Which leads to another query.

With the SD card inserted and the unit connected to my Mac, when I launch POI Loader and get to the Loader's Destination page, the drop-down menu there shows ONLY my Nuvi 3790 and NOT the SD card.

On my last Nuvi, a 650, which I gave to my daughter, when you got to that page, the drop-down menu allowed you to choose EITHER the Nuvi OR the SD Card.

I went ahead and loaded the POI files I had downloaded from POIFactory to the 3790 and when I browsed the folders of than unit when it was attached to my iMac, I found the files in the POI folder.

So, we don't use the SD Card for POI any more?

Thanks.

Format the card to use for the first using FAT 32. I exclusively use the SD card for my POI's, and the mega JCV file.

No idea why you would do that, unless you are using the SD card for your old 775. I still have 3.26GB free and i have almost 600MB of TOPO maps loaded to boot. Don't see a need to put anything on an sd card except my Language Guide which doesn't want to see the full version if i put it on the Unit it self.

Just a personal preference, really. Both of my units have their own 4GB micro cards; the 775 has an adapter, of course...

I prefer to compartmentalize my computer structures (like file folders), and both nuvi's are no exception. It comes down to options. And, as you've stated, the card is hot-swappable.

Hi Juggernaut. Here's how I fixed it.

When I first attached the Nuvi to my iMac with the newly inserted SD card, the Nuvi icon appeared as did the icon for the SD card. It was labeled "unknown". Despite that, when I used the POI Loader, the SD card did NOT appear as an option in the pop up menu.

I thought what the hell, and changed the name of the Card from "unknown" to "SD Card". Ran POI Loader again, and now the pop-up menu shows the SC Card and I am able to load POI to it.

Do I understand you correctly? You choose to d/l the map updates from Garmin (the JCV file) to your SD card and not to the unit itself? May I ask what is the advantage to doing that?

Thanks.

Not being a MAC person, glad you figured this. Naming a drive on a MAC is something I'll remember.

The first thing I do with a new card is do a full format to make sure nothing nasty is on the card. Then, I'll use a naming convention like "Garmin 4 GB" to make sure I don't delete anything of value.

I put the 775 meg JCV on my card, yes. The reason why is in my post above yours.

I am using a Wintec SDHC card class 10 and find it gets flacky and needs reformatting at times.

Next time I will stick with the Sandisk brand name.

Why are you waiting? If the card is flaky then so is the data on there. Heave it. My hobby is photography. I use Lexar Pro 300X or Sandisk 60mb/s or 90mb/s Cards. My wife's point and shoot uses Sandisk 20mb/s HD video sd's. Means nothing, all that class 10 class 6 20/30/60/90 MB/s is just a way to grab more cash from you, cause they give you the impression you will need it. Truth is, the average person with the average Camera or Camcorder will not notice any difference. When you start spending $5.000 and up on these things you will notice write issues. Cameras doing 6 or even 10 frames a second like mine does. Its all about Writing to the card not so much reading from it. Gps's, low end Camcorders and Cameras do not benefit from fast cards. Most important is reliability. Regardless of size or speed, the info must be safe. Spend the money once not twice. B&H has some good deals. Grab yourself a 15mb/s sandisk. $10.95 at B&H. Plenty for your Garmin.