Good morning, my PC has two internal hard drives. One with Ubuntu installed and the other one with Win7 x64. After problems on Win OS, I decided to re-install it but, after re-booting from installation disc, it freezed, so I decided to re-install from inside Windows. That compelled me to work on Linux OS to recover Grub2 bootloader. That worked out but, again, I tried to re-install Win7 from DVD and when it comes to choose the disc where to install the OS, I naturally select the disc where Win7 already lays. But it comes out with an error saying that it can't create a system partition there and that is no system disc. I remained astonished. So, I pressed the "format" button. After a few seconds I re-iterated the choice but again the same error message. Therefore, now, I am no-more able to boot Win7 because I formatted. How can I solve this problem?