I did a backup and did a full wipe. When I went to flash a ROM, I could not get to SD. I went into the mounts menu and enabled SD card but to no avail. I restarted into recovery and still unable to access SD. I had upgraded from previous TWRP build. Ended up restoring ROM using backup I had just created. I just verified that the backup wrote to emcc.
Sent from my NookColor using xda premium
Galaxy Note 8 N5110 stock ● Nexus S i9020a with Skinny CM11 Nightly
Legacy: HTC G1 ● HTC Desire Z ● Nook Color with CM10 on EMCC and Tablet UI Mod