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Not able to install Ubuntu on Lenovo G50 Core i7 Windows 8.1 system. All the time the GRUB installer fails to install and the system directly boots to Windows 8.1.

Even when trying with the Ubuntu 15.04 version same thing happening.

Earlier with the older versions of windows I myself have installed them without much trouble but now UEFI and SECURE Boot is not helping much I guess?

The process I am trying to follow is shrinking my D drive in windows. So an unallocated space is created.

I am inserting the bootable USB selecting the BIOS option of booting through the USB.

And then following the instruction as given normally during the process. Only during the partition I select the Largest free continuous partition to install the Ubuntu system. I am not doing the Manual thing as I am not very much familiar with the process.

But at the end the GRUB is failing to install, all the time.

Tim
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John Doe
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1 Answers1

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You wrote:

I am inserting the bootable USB selecting the BIOS option of booting through the USB.

This is your problem. You're creating a disk on which Windows is (almost certainly) installed in EFI/UEFI mode and Ubuntu is installed in BIOS/CSM/legacy mode. This makes for a much more complex boot process than if both OSes are installed in the same mode. At best, it means you must use the built-in boot manager or rEFInd to select which OS to boot, and at worst it becomes impossible to switch OSes. Given that you also report that GRUB didn't install, the latter is the case for you.

You can probably fix your problem by disabling BIOS/CSM/legacy support in the firmware and either running Boot Repair or installing my rEFInd and the appropriate EFI filesystem driver. Alternatively, after you disable BIOS/CSM/legacy support, you can re-install Ubuntu.

Rod Smith
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