andonakis

I bought a bootable micro sd card with CyanogenMod 7 from amazon several months ago. Loved it and served its purpose. I'm going to be selling it to a friend since I bought myself a galaxy tab 2.
I have done a factory reset on the nook color with the sd card out, BUT I just can't do it with in CyanogenMod 7. I go to settings, privacy and than factory data reset but it just boots up with all my info and apps like nothing happened. I tried to remove my account but it says I can only remove it by resetting the phone to factory defaults. I'm selling it with the bootable sd card but i need the card to be set back to original so the next person can log in with their google account.
Can anyone please give me some insight? Thank you.