This is when I tried to install a fresh OS (Windows 8 Enterprise N) into an acer laptop with a config, i3, 4gb, 500gb, win7 ult. I can't delete or re-create any of the drive partitions. The options are disabled there.I first thought it might be a problem with the compatibility of the hardware with the Win8 operating system. So I tried to boot with win7 OS installation to delete all the partitions, but no use, got same problem with win7 too. No partitions are being deleted. So I started the system with the old win7 OS (installed in the system), from the disc management option deleted all the drives except drive C (of course the OS will not let me format or delete drive C ). and then reboot with the Win8 installation, created 2 new partitions, formatted C drive and then installed the OS. I needed to change the C drive partition size but I couldn't. Any idea what is the problem????