Ok, I realize that there have be many posts on the cannot mount /data. And I have tried the swap file system to fat and back to ext4 but that fails as well. I've tried using adb and with that any reboot ends with a blank screen and no progress.
I have a nabixd 16gig tablet that is using twrp...
I've tried the ca root I've tried installing TWRP with Odin with no luck. It's successful with Odin but when I try to start recovery it's just the stock. I have the latest updates and 6.0.1, not sure what's up. SM-G900T1