FAT FS on mtd partition of NOR flash

[Tim Hardisty]

Whilst FAT on a NOR flash may generally be seen a not such a great 
idea...please ignore that and confirm if...

...I am right in deducing that I can't simply make a FAT file system on 
(say) the third mtd partition (with 512 byte sector emulation) 
(partitions 0, 1 and 2 are "raw" data) since FAT will treat the entire 
flash devices as a "volume" and so fail to find a partition table at the 
bottom end of the flash device? If so, it no doubt explains why I can 
format a FAT FS but not mount it.

I could - perhaps should -  re-jig my partitions so partition 0 is used 
for FAT, rather than partition 3, but before I do that are there any FAT 
FA/NuttX gurus who can let me know if there is a way to do this (and 
save me the hassle of reworking my bootstrap and MCUboot locations etc. 
for now)?