unmountable boot volume windows 8

If you cannot enter Windows 10 due to UNMOUNTABLE_BOOT_VOLUME error, then Insert the Windows 8 or Windows 10 bootable media into optical media drive and Restart the computer to BIOS setup ( To Access BIOS setup press Del, F2, F12 or Esc key on the keyboard during booting process) Now to BIOS setup move to BOOT menu using the Right arrow key. rumus volume bola