I installed Opensuse13.2 using dual boot on my system that originally had windows 8.1. If I was using UEFI boot option then my computer automatically logged onto the windows OS. So I was using legacy boot option which automatically logged into Opensuse and when I wanted to log into windows I changed it from the boot menu at the start up. The Grub boot loader was not showing windows8.1 at the startup as an option. In an attempt to correct this I followed a tutorial and used the following command. bcdedit /set {bootmgr} path \EFI\opensuse\shim.efiAfter doing this now I can not log into my windows installation. It says that no boot option can be found. I am logged into my linux installation and have access to my windows OS files. Is there some way that I can manually edit some file to correct this?
Dual boot Opensuse13.2 and windows8.1 boot loader
dual boot;boot loader;uefi
You seem to have spoiled your windows bootloader for now but that might still be fixable by installing openSUSE with UEFI bootloader and not CSM/Legacy one (so that there's actually an /EFI/opensuse/shim.efi on the EFI System Partition).  There's nothing GRUB can do to load Windows if its own bootloader is misinstructed as per some careless tutorial.Don't hurry.  And better yet, read this first.  A very short version is that your bootloader is not going to boot any UEFI OS if it's booted in Legacy mode, and installing UEFI bootloader is not possible in Legacy mode either.So install openSUSE in UEFI mode (there's usually a difference when you choose your flash drive, might be UEFI: prefix or like that) and try booting Windows via the resulting EFI GRUB -- that would likely end up loading GRUB again though.  I'm not a Windows expert so not in position to advice you on reverting that bcdedit though; might be worth it to backup the data and scrap it to start over again with more care (and just switch the OS boot order in your system's firmware settings so that Linux -- that is, GRUB -- starts by default).PS: there's a nice boot manager called Refind in case firmware misses a boot menu, its author also publishes micro ISO with it and it's included in my ALT Linux Rescue as well (just boot it and select the rightmost boot target to scan disks for OSes).