I just bought a street map on a micro-sd card for my 60CSx. I'd like to back it up to another micro-sd card. Is it just a matter of copying files over, or is it more tricky than that?
The Garmin preloaded map SD cards cannot be copied.
The maps are locked to that card.
You can back it up but it will not work if it is a locked map. If the map is locked, the lock is tied to the embedded serial number on the SD card.
If you lose your original microSD device, you won't be able to use other microSD + your restored map because the map is "married" to the card. Similarly, if the map got corrupted, will you be able to copy your backup back onto the device? I've never had a map on a Garmin microSD card but I'm guessing it is write protected. Either way your backup is useless.
If all you wish to do is *backup the maps* on the Garmin SD Card, sure you can...just backup what's on the card to any storage media that will accept the large map file. If the maps somehow become corrupted (not likely as they are only being read from the card) on the Garmin SD Card, you can format the card and copy the files back onto the same Garmin SD Card, that is *assuming the card itself is not write protected in some way*. You can try to write a small file to it to find out if it is or not.
If however you are trying to move the maps to a *different* SD Card (not the original Garmin SD Card) and use them from that *different* SD Card, then no, you cannot. As was mentioned above, the maps are tied/locked to the serial number of the particular Garmin SD Card that they came pre-installed on.
I know this sounds pretty dumb, but have you loaded the SD card into your Garmin and confirmed that it is fully functional?
I agree with you. Even a read only file can be copied, it just can't be changed. Tying the map to the serial number of the card can not be changed and a reformat of the card it came on, then copying it back is the only way - that I know of - to reload the backed up file.
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