It also deleted my D: partition when I chose to "Replace Windows 7". And my PC doesn't use EFI. Luckily I made a backup a month before... I support the suggestion of @michaelpwalls to insert the warning that the whole drive will be formatted.
So this appears no matter whether another OS is detected or not. ** Information type changed from Public to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1073968 Title: Install over Windows 8 partition erased whole HDD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1073968/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs