Default How to mount an external USB stick in OmniROM?

How do I mount an external USB stick? I thought it was under /mnt/usbdisk0, but it's apparently not. I can access this folder and create folders in it fine, but it's still there, and I can manipulate files on it even after I unplug the drive. Also, accessing this directory does not power on the USB light. How do I access external USB drives in OmniROM? The drive is formatted in FAT32, so it should be accessible from any device.
Phone: Samsung SGS III International i9300
Firmware: 4.4.4
Baseband: UBUGNF1
Bootloader: UBUGNE1
Kernel: 3.0.101 Boeffla-Kernel-2.4-beta5-Omnirom-NG-i9300-20140902@andip71 #1
O/C Level: 1600 MHz
Media Card: Samsung 64GB Class 10 MicroSDHC
Battery: 7000 mAh ZeroLemon