I have a HP 17 inch 17T Optimus, Uefi, Secure Boot laptop which was running perfectly with openSUSE 13.2 and Windows 8.1. (Note: HP uses Windows install for HP, Win and BIOS updates) I only use Windows for programs that run best there (like Turbo Tax).
Prior to installing Leap 42.1, I started a Windows 8.1 update and up popped a free upgrade to Windows 10 from HP. I normally do not do an update/upgrade of two major events at once, like win10 and Leap42.1; but, as I had already installed Leap in 2 other computers with little problem, why not? So, I upgraded to Win10. In hindsight, I believe it included a BIOS update, as I now have more features than before (where before I could only change the boot order).
What I failed to do was make the Win10 Backup/Recovery USB/DVD. DON’T DO THAT, MAKE A RECOVERY USB/DVD!
Tip
Open up Settings from the Start menu and type Recovery in the Search box at the top right, then select 'Create a recovery drive' from the list of options that appears on the left side of the screen. You can also find it by typing Recovery drive in the Cortana Search box on the taskbar.
The Win10 upgrade went smooth and included all my 3rd party & HP apps. Then I installed Leap 42.1, The install went OK except during partitioning, I tried to have the Win10 partition mounted as /win10 and it could not, or would not, which may have caused my following problem.
Upon reboot, I only had Leap and 13.2 presented – no Windows 10.
And remember, I didn’t make a Recovery USB/DVD!!!
Not to worry, I copyed over the “shim.efi” from opensuse 13.2 to Leap /boot/efi/EFI/opensuse/shim.efi. Nothing changed; still no joy.
Start my trouble shooting; mount win10 & /boot/efi files and look, I could not find any Win10 Uefi files, and in the BIOS, I only had Leap and 13.2 as boot options.
So, with no Recovery USB/DVD. What to do? Long Story short, get the Windows 10 ISO – it’s free as an upgrade (for a while). Here the relevant link:
http://www.microsoft.com/en-us/software-download/windows10ISO
I wound up with Win10 Pro.
Google for: How to upgrade to Windows 10 and get your new license key
at least make sure it’s activated/authenticated.
So, I run the Win10 install DVD and click “Repair Computer”. “Troubleshoot” > “Advanced Options” & select Command Prompt.
There I try all the older commands like Fix MBR, etc., no joy.
Then, I try the more sophisticated apps like “Startup Repair” have to look for it, Uefi firmware settings, etc., no joy.
Finally, I do “Reset this PC” (takes a while) – worked (except, I lost all my 3rd party apps including “HP update app” (However all those apps are listed in a folder on the desktop). Now, Win10 is listed in the BIOS as bootable, but, not included in Grub.
Note: the next thing I did was to boot Win10 and make a Recovery Disk (or, I made it from the install DVD).
Continuing, I did not wish to try a new install of Leap42.1 in case it gave me more problems, so, I downloaded Tumbleweed KDE Live 20151110; it booted fine (and I was able to mount files and troubleshoot). By the time I went to download the tumbleweed install DVD, it was version 20151111 and I could not get it to boot. I installed Tumbleweed from the Live 20151110 CD resulting in a minimal install – see release notes and – it worked, I can boot everything!
I reset the Tumbleweed repros to online and did a “zypper dup” and it gave me a full bag to include those omitted during the minimal install.
I’m up and running with a full bag, Yea!
(However, I still have to go back and add back my needed Win10 apps & programs – it will be a minimal install.)