Cannot access MicroSD card in any ROM
Regardless of the ROM I use, (I have tried CM, OmniROM, and even CleanROM. None can access the MicroSD card I have in my phone. However, I can see the SD card fine in TWRP, and if I pull it out of the phone and insert it in a microSD card adapter, I can read and write to it fine on my computers. Why won't my phone see it when it's in the ROM, and how can I fix this?
Phone: Samsung SGS III International i9300
ROM: OmniROM Official NIGHTLY
Kernel: 3.0.101 Boeffla-Kernel-2.4-beta2-Omnirom-NG-i9300-20140805@andip71 #1
O/C Level: 1600 MHz
Media Card: Samsung 64GB Class 10 MicroSDHC
Battery: 7000 mAh ZeroLemon