Comment 36 for bug 1265192

+1. I just opened a question in AskUbuntu about this issue: http://askubuntu.com/questions/480993/ubuntu-erased-my-windows-when-i-chose-to-replace-old-ubuntu-install

I tried to overwrite my Ubuntu 12.04 with 13.10 and it erased my Windows 7 and Ubuntu now occupies my entire HD.