> I'll be receiving a GPS programs and maps on an SD card soon and would > like to clone the card for backup. I have had SD cards become totally unreadable and unformatable and would like to be prepared should it happen with this one. Given that the program and data on the card in question cost me $183 CAD, I do feel rather vulnerable, even if I can backup the contents of the card excluding the serial number. I appreciate that unscrupulous people might clone such cards and sell copies, and I certainly don't want to facilitate that behaviour through this thread. I believe one can change the Volume ID of hard drives and imagine something similar being possible for SD cards. I suspect it is impossible to clone the card completely, including serial number, but thought I'd ask if anyone has investigated this and found a solution. You ask for the GPS device's serial number at sale. Copied to a microSD card and then, GPS can read the map data from the card. If the SD card is a fake, a notification will display on the screen under “Manufacturer name”.

SD Insight displays information such as manufacturer name, date of manufacture, and the product name and serial number.

The software is locked to the serial number of the SD card, so just backing up the data isn't enough. I'll be receiving a GPS programs and maps on an SD card soon and would like to clone the card for backup.