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I recently installed Ubuntu 15.10 on an HP Z-Book running Windows 8.1.

I installed grub on an sda partition mounted for /boot. Is there some way that I can boot on that partition and possibly use grub to select either windows 8 or ubuntu linux?

Currently, when booting my pc with OS selector, it goes straight into windows 8 (with secure and fast boot both turned off on UEFI hybrid boot mode).

wraithie
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1 Answers1

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As mentioned by @oldfred in the comments, making a backup of original windows bootx64.efi and copying grubx64.efi should do the trick.

An even better solution for me was running ubuntu boot repair, recommended repair. It made a dir /boot/efi/EFI/Windows/Boot/ with grub already named as bootx64.efi. Using that, when booting from OS selector, grub loads successfully.

EDIT: If boot repair page returns internal server error, this is how boot repair can be installed:

sudo add-apt-repository -y ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

Boot repair window should show up after install.

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wraithie
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