Possible Duplicate:
Ubuntu 12.04 does not see windows already install on my computer (dual installation)
I downloaded the Ubuntu Software to create a USB to install Ubuntu. I rebooted my PC (Windows 7), in wich i did a partition (:E) just for Ubuntu. But when i start the installer, it says there's no other OS in my computer, and doesn't give me the option to install it in :E, just the option to format the WHOLE hard drive and install it there. What can i do?
User68186 told me to type "sudo dmraid -E -r /dev/sda" in the ubuntu terminal but it says: "no raid disks with names: "/dev/sda"". I opened GParted, and in /dev/sda (465.76GiB) it says: partition: unallocated; file system: unallocated; size: 465.76GiB. This is what I did: Only 'sdb' shows up when installing 12.04 on a new Dell inspiron 14z .
Also, i tried Wubi before, but it had an error with "wubildr.mbr"
