I have a laptop with windows8.1 pre-installed. Now I want to install Ubuntu12.04 and don't want to remove windows. I have disabled window8.1 FastStartup. In my BIOS, I can't find fastBoot or quickBoot.

Then I tried several times, it always show the error "the grub efi package failed to install into target". It drive me crazy. Anyoone knows how solve this?

  • did you change UEFI mode to legacy mode in bios? – Avinash Raj Dec 15 '13 at 2:35

If the Ubuntu installation has mostly completed, I recommend you try one or both of the following:

  • Download a USB flash drive or CD-R image of my rEFInd boot manager, prepare a disk, and boot from it. You should see options for both Windows and Linux. If both work, then you can install the Debian-package version in Linux and forget about GRUB.
  • Run the Boot Repair tool from an Ubuntu live CD. This should install a fresh copy of GRUB, finishing what the Ubuntu installer failed to do.

If both of these fail, then post back with the URL that Boot Repair provides, along with a description of any errors you see from both approaches. That will give us more information about what might be going wrong, enabling a better diagnosis.

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