While attempting to update to the CM12.1.1 Nov 20116 nightly, I ran into a problem; it would never get past the boot logo.
When I open Recovery (now TWRP v126.96.36.199), /sdcard (internal storage) will not mount. In the repair screen I see:
Size: 0 MB
If I hit the Repair button in TWRP with sdcard highlighted, I see:
E: Unable to recreate and-sec folder.
Updating partition details...
E: Unable to mount storage.
E: Unable to mount /sdcard during GUI startup.
I can install and run CM11 but it seems to be running partially from the external card. I'm now noticing that ace-opt does this for speed purposes which I was running at one point while troubleshooting TWRP (but not now). What data can I gather to help fix this?