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I am trying to install Ubuntu 11 to dual-boot with Windows 7 (my main os).

Here is screenshot of disk management on Windows:

im1

As you can see I already shrinked volume D: for 16gb, where I am about to install ubuntu. However, in Ubuntu installation, I see no partitions at all.

Then, I launched Disk utility, and here what it showed:

im2

Check the size of last out-of-nowhere partition. Obviously something is wrong with my partition table. What can I do? Thanks.

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Something is definitely wrong with Disk Utility, See this img6.imagebanana.com/img/65v9bcgh/Selection_001.png – Gaurav Butola May 28 '11 at 15:28
Can you reupload the image? – spacevillain May 28 '11 at 15:39
Why reupload? Ok, I'll upload it to imgur i.imgur.com/zJsKF.png – Gaurav Butola May 28 '11 at 15:55
i.imgur.com/yZOi8.png here is what GParted shows :-( I think I need some utility to run under Windows for fixing the partition table... – spacevillain May 28 '11 at 16:54
Just looked in Gparted, mine is exactly the same, shows "Unallocated". – Gaurav Butola May 28 '11 at 17:01
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2 Answers

up vote 1 down vote

Ok, figured it out.

Under Windows, I backed up all the data on D, then removed it, and also removed "recovery partition". Then, I recreated D, so I got

unallocated (15gb), C, D, unallocated(16gb)

After that, Ubuntu found every partition just fine.

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up vote 0 down vote

I would rather suspect a bug in Disk Utility. Start gparted and check if same problem occurs. If not, disregard.

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But then how do I install it, if there is no partitions at all at installation menu? – spacevillain May 28 '11 at 15:40
you can unset the the bootflag in gparted. The Installer from the Live-CD will prompt you to make partitions or (by your choice create them automatically). – con-f-use May 28 '11 at 16:30
I posted gparted screenshot in comments to my question, check it, please. – spacevillain May 28 '11 at 16:59
And what's the problem? Now you can either create partitions yourself or have the ubuntu-install create them by selecting the unallocated space there. When the installation is through, you should be fine. – con-f-use May 28 '11 at 17:43
But unallocated space is my whole hdd... wouldn't it ruin everything? – spacevillain May 28 '11 at 17:47

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