I installed Tails in a USB stick and enabled persistent storage. The USB had 16GB of storage. Now I formatted the USB without freeing up the persistent storage and lost 10GB of space. I remember the passphrase I set while installing. Is there a way to recover that space?
https://tails.boum.org/install/win/usb/index.en.html
I followed step 5/5 at the bottom of the page here. It was a dumb thing to do I know.