SD Card

Select your SD card as the device to update. However, not all Garmin units support POI's on the SD card. My C550 definitely does not and I have not yet tried the Nuvi 765T (though I believe it does).

Using the same set up you now have for your custom poi files.Have the sd card in your gps unit.Run poiloader. When you see screen find device make sure you select the proper one. If using SD card use the pull down window .The arrow located across from device and selects the SD card.

It works on the 765T. It prompts me if I want to install the POI's on my internal memory (in order for them to be available if my SD card is removed).

Why do you want your poi's on an sd card. They take up very little space on the unit. Since photos and music files are much larger they make sense to put on an sd card if you have a large quantity.

Each time you update your poi file and upload it rewrites to the garmin's drive. If you update every week or so you're extending the life of the garmin by updating the sd card drive rather than the garmin drive.
Since the map updates are about 4 times a year I install the maps on the unit and the poi files on the sd card.

Has anyone found that the higher read/write speed sd cards work any better in your garmin than the standard speed ones?

I believe the drive in the gps is a chip and has no moving parts to wear out. I am not a computer expert but I don't think there is much to worry about wearing out the drive.

I thought it would better on the card I guess I'm wrong I will not be putting them on the card thanks.

I would download poi's to a sd card if you can since wearing out a sd card is alot cheaper that wearing out your garmin drive. If you update your poi's often even more of a reason to download to an sd card as you save 40 or so re-writes a year on your garmin hard drive.

There is no hard drive. It's a flash drive with no moving parts, no wear. I think he understood fine.

would wear out faster than the chips in the unit. SSD or Solid State Drives used as disk replacements have a life span of about 4 years reading and writing an average of 4 GB every day. Seeing as how a GPS memory is a lot less, but it still doesn't get anywhere near it's several hundred megs of data to stop working in 4 years, you're safe.

Flash memory does wear out in the sense that it has a limited number of write cycles before it stops working. However, this number is very high and having a few updates a year is insignificant.

I've got CF cards in my camera that have 100's of thousands of reads and write (moving 10MB files) without a single failure. I've even put my cards through entire wash and dry cycles without a single issue. I would say the odds of the GPS device being hit by lightning would be higher than a memory failure due to "wear".

I only put pictures and songs on the SD card. Your GPS will long be obsolete by the time it won't write to the SSD device. If you're worried about space, just delete all the voice files, help files, that you don't use. You'll be able to load the new maps any time they come out plus you can put thousands of POI's onto the main memory with no problems.

What the SDHC card does buy you is more internal flash memory for map updates, as they will not be getting any smaller. I use external media for all of my POIs, and freed up my internal flash memory by removing all nonessential files. I do not know how much space your POI files use, I can only speak for myself, but US units only have 2GB of internal flash memory for program, maps and user data.

What is there to be wear? The Flash Disk Not like rechargeable battery that wears out after certain time of uses. Can't count how many times I fooled with Nuvi Still working. I would put music, photos & additional maps on SD card if I have to. I wont worry about tear & wear.