Hello, I tried updating from El Capitan to Sierra but with no success. I'm using Clover v.3763 dual boot with Windows 10. PC specs: i7 4790k, 8gb of ram, hd 7850. I've put all kexts that are in my L/E folder because if I don't, I get the marble of death with a silver background. Anyways, after many attempts with and without cache/kexts injection, the furthest I've gone was the Sierra installer. It hangs up where it says "33 minutes remaining" and after a couple of minutes it says "Unable to unmount volume for repair".