This is a totally n00b question, sorry.
I put this on an sdmicro card as an insurance policy, under /clockworkmod/backups, stuck it into the back of the S3.
But when i boot into clockwork (from clockworkmod.tar), it doesn't see the sdmicro card at all - it sees the internal 32 GB as '/sdcard' and there doesn't seem to be a way to get CWM to find the one on the actual sdcard (even if I mount sd_external). Is there a way to do that on this thing, or just make sure you copy to internal 'sdcard' over usb? Which I've done now.