I unlocked flashed a recovery then rooted. Then I borked my system.img when trying to install a "browser/flash.zip" so i installed the factory image i downloaded from google and ever since its only read 8GB worth of SDCARD space. I installed 02/22/2013 nightly of CM10.1 and it still shows not enough space. The recovery i have installed is TWRP. I'm backing up the entire contents of my SDCARD to my computer right now and I'm thinking i should be able to format the SDCARD with fastboot or something. maybe adb? am i going anyway in the right direction? any help would be especially appreciated