Well after spending all weekend figuring out how to get it to root, now I'm up against this extSdCard nonsense. I did the platform.xml edit from the OP and rebooted. Now the phone goes through the Samsung boot logo and then hangs on the Verizon logo with the blue LED on. And it's hung hard - it takes a battery pull to turn it off. I tried booting again (twice), same thing.
For the record, Verizon Note 3, N900VVRUCNC4, OS 4.4.2, rooted with TowelRoot, 64 GB Samsung micro-SD card in the slot.
I've already tried removing the SD card and rebooting - didn't help, and a factory reset - didn't help.
Can someone help me get out of this jam, pretty-please? I'm getting ready to run this phone down the garbage disposer.
This is my Note 3. There are many like it, but this one is mine.