Probably you shut down Windows incorrectly so now it's locked. If you still have Windows installed, try to restart it. If not... well, i would just copy all files to another storage and format NTFS.
After update alt+shift works as meta key and i don't know why.
Probably you shut down Windows incorrectly so now it's locked. If you still have Windows installed, try to restart it. If not... well, i would just copy all files to another storage and format NTFS.