Anyways, I finally decided to install a ROM on my GS3 today (have done it in the past with GS1) and the rooting/ installing CWM process went smoothly. However, when I went to install the ROM from recovery, it gave me a "E: Can't mount /sdcard/" message.
The phone boots up normally and I can explore the sd card after it boots. I can also launch CWM after the phone boots and choose to install the ROM there-- but when the phone restarts into recovery, I get the same error message about not being able to mount
I've tried this on CWM recovery v220.127.116.11 and v18.104.22.168, but I'm getting the same error both times. Any ideas?
First off, thanks for responding, liltitiz. I've since found the solution, and will post for anyone else in a similar bind.
I tried mounting it in recovery, but it couldn't. After fiddling around with it, I realized that I was still encrypted from exchange server settings that my school mandates. After deleting the account and decrypting, recovery was able to read and flash with no problems!
Thanks for your help