Re: Still Using FAT ??!
Or why do you need to know the disk format at all? It could be absolutely anything.
If it comes to it, you're only going to send info to a computer by Bluetooth (filesystem-format-less) or USB data transfer (of which there are a myriad independent transfer formats, none of whom mention FAT or any filesystem). And, presumably, you've already paid the patents for those.
At worst, just have a proprietary protocol and a userspace program (not even a driver, which needs to be signed by Microsoft thus providing them more money) which uses something like libusb to interpret the transfer and save the file as normal.
At no point do you NEED to use any particular filesystem whatsoever. And, personally, I have used some Ext-based system just to avoid such problems even years before MS started to litigate their patents.
But, certainly, exFAT isn't even the same as FAT32 which isn't the same as just plain FAT, and they could have used that instead too. It's just a failure, it seems, to properly choose a filesystem suitable for the job. Hell, I'd be ironic and use the MINIX filesystem internally, just to totally screw with everyone. All it has to do is keep track of some blob of binary data, it's not like it's rocket science. Hell, actually, I'd probably find some way to run SQLite on top of MINIX and use that to store files instead, just to really blow people's minds.