Solved! Bitlocker use USB to unlock

[surfer10k]

I have a Aus TPM module and W10 pro. I enabled bitlocker and am able to select unlock with a USB. Then I get the dialog to save to the USB which also works. But when I look on the USB stick I see no hidden or unhidden files??
Any help appreciated.

 

[rgd1101]

So the USB doesn't unlock the bitlocker?

 

[surfer10k]

So the USB doesn't unlock the bitlocker?

Thanks rgd1101, I had not bothered to test the USB as it did not show any hidden or unhidden files. It actually does work !!
Would love to hear how this works. There are no hidden partitions on the USB either.
THX