How can I dual boot Windows 10 and openSUSE Leap 42.2 (UEFI) ?

(Well, hello fellow members, it’s my first time posting here, so I hope that my post/thread is within posting rules).

Hi, guys. I can describe myself as a Linux Fan/Newbie, I have in past successfully dual booted Windows 10 and Linux Distros (Ubuntu, deepin, Arch Linux, to name a few).
I stumbled across openSUSE on distrowatch in 2016, that’s when I started liking it, but the prospect of leaving Windows was scaring me. Now that I have experience in dual booting/multi booting, I thought to dual boot openSUSE & Windows 10. I searched the web for some tutorials, but found none of use. So I request ya’ll to guide me on how to dual boot the OS’s and disable openSUSE secure boot.

Thanks a Bunch! :slight_smile:

**PS: My System:
**Asus H81M-CS Mobo,
Intel Core i3 4150,
Nvidia GT 710,
4GB DDR3 1600MHz RAM,
Toshiba 1TB HDD.

PC is custom built, secure boot is off, Fast starup/boot is off.
Windows 10 installed in UEFI mode.
~500 Gigs of space unallocated.
6 partitions, 1) MSR reserved, 2) EFI partition created by Windows setup, 3) Windows recovery created by windows setup, 4) OS partition (C:/) created by me in setup, 5) My stuff (D:/) , 6) My stuff (E:/). (All partitions are primary, as disk is GPT).
Thanks Again! :)**

I do not have any ASUS experience. Generally speaking, opensuse and Windows can work fine together.

I would suggest you see if you can have Windows shrink your Windows partition. That should leave plenty of space for opensuse. I’m not sure where to find that in Windows, but it should be there somewhere – perhaps disk management.

Once you have enough free space, just install opensuse. And it should work. There will be a boot menu, where you can select Windows on that menu.

As for secure-boot: opensuse works fine with secure-boot. If you install opensuse for secure-boot, and then disable secure-boot in your BIOS, opensuse will still work fine. If you don’t want anything to do with secure-boot, then first disable in the BIOS. Then, during install, when you see a summary screen you can click on “BOOTING” (or similar heading), and uncheck the box for secure-boot. But then, if you turn secure-boot back on in the BIOS, you won’t be able to boot opensuse, so maybe it is best to not uncheck that box.

Oops! I just reread your post. It seems that you already have plenty of unassigned disk space. So no need to shrink the Windows partition.

Opensuse should install fine on what you have shown. I use a similiar system to use (partitions etc) and also an asus system.

Some people have had some issues with asus uefi settings (me included). If you hit any problems please post back with full information and everyone will do their best to help.

Saw this reply and felt that this is an option worth considering on my machine as well. Am installing GParted and creating some unassigned disk space, then potentially installing Windows once again alongside OpenSUSE Tumbleweed. The 42.* series have convinced me that OpenSUSE is moving forward my cup of tea, yet there is constantly a nagging need of Windows environments more than what Virtualbox can handle because some of my users that I am supporting are die hard Windows adherents. There are times when I miss out on certain problems that are not noticeably in Virtualbox Windows guests but they show up on a full Windows environment instead. Sigh.