[Trisquel-users] Encrypting SD Card

[tsduv1994]

I encrypted an SD card using the following command: "cryptsetup -y --cipher  
aes-xts-essiv:sha256 --key-size 512 luksFormat /dev/PARTITION" The encryption  
worked fine. So I proceeding to test by moving some data to it (although I  
can only do this as root for some reason). I then unmounted the drive and  
switched on the hardware lock to prevent any changes. The problem is that for  
some reason I can't unencrypt the drive is the hardware switch is on.

Any tips on how to encrypt the drive in such a way that I'm able to unencrypt  
with the hardware switch on? Anyone know why only root can write to the  
encrypted volume?