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I want to install Ubuntu 12.04 on my PC. It already has Windows 7 on it. I wanna use both as a dual boot PC. My HDD is 1TB & it has 4 partitions in Windows. But when I try to install Ubuntu I cant see those partitions. I can only see the whole HDD as a single partition. How can i fix it? Please help.

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    What is your disk configuration basic or dynamic. You can get this information by running discmgmt.msc in windows. Ubuntu can't be installed in dynamic disk
    – Web-E
    Feb 7, 2013 at 15:07
  • You can not install more than one basic partitions either. Just to note. Feb 7, 2013 at 23:12

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Chances are you have one of two problems:

  • Leftover RAID data -- This can usually be fixed by typing sudo dmraid -E -r /dev/sda at a Linux shell prompt, changing /dev/sda to the device filename, if it's not /dev/sda.
  • A damaged partition table -- Many problems with MBR partition tables can be fixed with my FixParts program; see its documentation for details. You'll probably need to run the Windows version or run it from an emergency disc like Parted Magic, though.
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  • I dont wish to be rude- but your windows fixparts program doesn't seem very intuitive. I had downloaded the .exe and when I enter (what I think is) a device name it just comes up with a message and closes before I get a chance to read/do anything....
    – user997112
    Feb 25, 2014 at 19:37
  • Then RTFM. It's very well-documented.
    – Rod Smith
    Feb 26, 2014 at 0:21

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