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I had installed Windows OS on my laptop and I tried to install Ubuntu on the next drive. But during the installation process, the Ubuntu installer does not show or recognize my drive partitions (created through Windows). But on Ubuntu live session, it shows the partition and contents. I think the problem is with Windows grub file isn't detected by Ubuntu. Is there any possible method to handle this problem without formatting the Windows drive(partition)?

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Are you using SoftRaid or FakeRaid on our system? Also, Windows does not use any "Grub files". Try using Advanced partitioning. – hexafraction Jul 19 '12 at 1:54
I had Used EASEUS Partition Master 6.5.2 Home Edition for partition of driver.Before this My computer get restart to apply the partition using that software,But this time it don't restart to apply it. I don't know why.On ubuntu Partition manager don't show partition – nKandel Jul 19 '12 at 2:00
I'm sorry, but I don't know what random damage it can cause due to its not being standard compliant. – hexafraction Jul 19 '12 at 2:01
up vote 0 down vote accepted

I had solve this by formatting all disk and make partition with help of bootable CD of Window 7. I think problem is created due to installation of Window 7 using pen drive. (As I had deleted all disk along with System Reserved before installing window 7 using pen derive)

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