Now there are only 3 files and 2 are 1KB and 1 is 7,455KB. I also cannot open any of them. How do I make undo the ReadyBoost? I want to be able to access all my files again.
normally, when you make a drive readyboost ready, it asks you if you want to use the whole card or part of it (well, it did in 7 and 8) and formats the card as such.
you may have to search for recovery software to scan your card and recover what you can. sorry...