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Dual Boot openSUSE Leap and Windows 10 UEFI

opensusegeeko

November 4, 2015, 15:05(EST) By Eric (a.k.a. TweakHound)

This is how I dual-boot my Windows 10 rig with openSUSE Leap.
This article is virtually unchanged from: Dual Boot openSUSE 13.2 and Windows 8.1 UEFI

Notes:
– BACKUP your computer with a disk image before attempting this!
– Please do not contact me with questions on this topic.
That’s what the openSUSE forums are for.
– For how I dual-boot with a standard BIOS (legacy) see here: Dual-Boot openSUSE 12.3 And Windows (article is NOT compatible with BTRFS)

Interesting Links
openSUSE:UEFI
BCD System Store Settings for UEFI
Dual booting with Windows 8, not as painful as expected.

Preparation
1 – Full disk image backup using Acronis True Image.
2 – Make or leave unpartitioned space on OS drive for openSUSE. (If you can’t do this without a tutorial, well…..)
3 – Make UEFI boot usb flash drive with Rufus.

Installation
Pardon the odd screenshots. I used Vmware player for this article.

I should note that I am not a believer in using multiple partitions for my Linux installs.

Boot up, go through setup until you get to the partitioning section.
I do not use BTRFS and I always use Create Partition Setup…
os132_uefiboot_1

Choose Custom Partitioning (for experts) and click Next

os132_uefiboot_2

Right-click on the DRIVE where you want to install openSUSE and choose Add Partition
Make a swap partition, 2-4GB is fine.

os132_uefiboot_3

Below are the options I use. Ext4 for file system, noatime, discard* (=trim)
*note – I am not using discard at the moment because it was causing errors on my Samsung 850 Pro SSD.

os132_uefiboot_4

This next step is critical as your system will not boot without it.

Right-click on the Windows EFI boot partition and choose Edit

os132_uefiboot_5

Choose Mount partition
Choose /boot/efi
Click Finish

os132_uefiboot_6

Done?  click Accept

os132_uefiboot_7

Last chance to bail…
Click Next

os132_uefiboot_8

I don’t use Secure Boot. It can be disabled here:

os132_uefiboot_9

Boot Screen:

os132_bootmenu_1

 

Everything should run just peachy until you boot into Windows again.

Windows will usually try and make its bootloader default again which means openSUSE isn’t an option.

While in Windows, open an Elevated Command Prompt and copy/paste this command (source):

bcdedit /set {bootmgr} path \EFI\opensuse\shim.efi

That’s it!

Tagged With: How-To's, Linux, openSUSE, This Site

Reader Interactions

Comments

  1. crazydiamond says

    November 9, 2015, 13:37(EST) at 13:37

    are you serious with this post dude?

  2. Horst-Werner Eckert says

    November 24, 2015, 04:59(EST) at 04:59

    Hi Eric !

    Thanks a lot for your article concerning Dual Boot.

    Following your guidelines, everything has worked fine on my notebook (ACER Aspire V13 / Windows 8.1), but
    I did not get the grub boot menu when running a restart (openSuSE Laep 42.1)!!!
    I’ve got the grub prompt, instead.

    Please see also : https://en.opensuse.org/openSUSE:UEFI

    By default, the firmware will search /EFI/BOOT/bootx64.efi as the
    extension that will load and execute in order to load the operative system.
    In Windows machines, the correct extension is in
    /EFI/Microsoft/Boot/BCD.efi, and for openSUSE is /EFI/opensuse/grubx64.efi
    or shim.efi if we have secure boot enabled) .

    For you have decided not to use “secure boot” the right command, you have
    to run on Windows CLI is

    bcdedit /set {bootmgr} path \EFI\opensuse\grbx64.efi

    And that has worked as expected !

    The system now starts with the grub boot menu.

    Kind regards

    Horst-Werner

  3. nowonelse says

    January 31, 2016, 00:01(EST) at 00:01

    this is a great artice, i used this as a guide, although I did some things slightly different… difference of hardware I used the bios options to point to the grub boot menu… thanks for taking the time to create these articles, very helpful indeed..!

  4. lyndonjohn says

    February 6, 2016, 06:11(EST) at 06:11

    i cannot add partition on my primary harddisk.

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