How to remove the password of the SD card in ubuntu 12.04

Solution 1:

I am assuming you are looking to crack the SD card, so recovering the password will work fine as well. Luckily, this is pretty easy for most SD cards since it is stored in plain text. You should be able to just follow the instructions posted here to gain the access you require.

Steps

1. Put your SD card in your card reader
2. Mount your SD card by running sudo mount /dev/mmcblk0 from Terminal
3. Open up the SD card in your file manager
4. Find a file called MMCSTORE and copy it
5. Paste it wherever you want
6. Open it with your text editor
7. Now, you should see your password in plain text

How it Works

This works because by copy-pasting the MMCSTORE file you can gain read-write access to the pasted version. So, you can simply open the file and view it's contents. For more information, view this webpage.