how to lock Micro-sd card in linux
 

Hi every one


my product is PDA :
it is booting via 4GB Micro sd card apart from that sd card have 2 partitions there is 1.BOOt(Uimage) @ another one is 2.Rootfs(root file sys)

My Problem is:

i want to lock the my sd card because we are giving the product is to clients on that time every one is copying the file system, so i need security means i want to give write protection to my sd card is it possibel?

please be help me

Thanks & Regards
Ajaykumar
email:ajayummadi@gmail.com

If you want to protect the card from writing. Just mount it read-only.
But what i gathered from the rest of your story, you don't need write protection, but you want a form of DRM for your sd-card.

If I read right he just wants to keep clients from writing to the SD card, as it will be passed around.