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I'm not really that of a linux pro, more of a noob. But i can handle console operations. Well, this is my system:

ASUS ZenBook Prime UX31A 256 GB ADATA MX11 SSD Intel Core i5-3317U (Ivy-Bridge)

I have a fresh installation of Windows 7 Ultimate (not activated) on a 90 GB NTFS Partition on my SSD, the rest is unassigned. I want to install Ubuntu 12.04.1 from an USB Stick (no CD-Drive...) created with Universal USB Installer However I'm not givven the option 'Install alongside Windows', and when i choose 'other' it shows that 256 GB of 256 GB are unassigned (free) Memory.

os-prober gave me: /dev/sda1/:Windows 7 (loader):Windows:chain

I also tried: sudo dmraid -rE

and: sudo apt-get remove dmraid

with no success... How can I install Ubuntu alongside Windows? Thanks very much in advance!

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Have you booted into Windows and written data, such as by installing programs or otherwise? If you have not written data the OS can be over looked by the installer. – Weylin Schreck Oct 10 '12 at 18:17
I tried but with no success. Now I'm thinking theres some leftover partition table, since when I reinstalled Windows, there were several partitions like recovery and InstantBoot and so on which I simply deleted (Windows Installer). Is it possible to fix that, maybe with FixParts or similar? How do I do it? Thanks – Dom Oct 11 '12 at 5:53

OK, here is what did the trick for me: Since GParted didnt find any partitions on my SSD, i ran FixParts FixParts Page and it told me there were leftovers and if i want to delete them, which i did, and then i was able to see the partitions in gparted and the setup. Thanks guys (girls)!

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