I dualboot Windows 10/Ubuntu. I resized the Windows partition from in Ubuntu, and now when I try to boot Windows I get the "Unmountable Boot Volume" error. I tried a few fixes I found online, like going to CMD from the recovery menu and typing "bootrec /fixboot" but I get an "access denied" error. Not sure what to do from here. If possible, I'd at least like to save some of my files before doing a clean install (if it comes to that), but ideally I'd like to save my Windows installation.