Hi,
I had Windows 8.1 dual bboot with Windows 7. All working fine.
I installed openSUSE 13.1 for two venues this week nui.fr/blog and now has only Windows 8.1 and openSUSE 13.1 in boot menu.
I checked the web and found many tricks/articles but none came near the actual situation.
Here are some salient information on the box coming straight from openSUSE 13.1
If you have successfully done that before, you could save my life!
Cheers,
Jimmy
Your first problem is going to be with UEFI/EFI. From what I can see is that you currently have that disabled, but I am guessing, since I have not bothered exploring Win8+ (I am sorta-retired) and none of my machines are new enough for UEFI/EFI experience.
Some of the techs in my friends list have experience with this, so maybe they will spot this post and help out.
Most important thing to keep things running correctly, as I have gleaned from the W8/Dualboot techs here, is to disable quick or fast boot in W8+, make sure W8+ does a full shutdown.
The other thing to keep in mind, this from experience, is do not hibernate any version of Windows and expect to multi-boot while Win is hibernated.
In addition, Win updates will occasionally overwrite the MBR with what MS wants in there, which is not some other operating system.
Another problem I can see for you at this time is that you are booting from the Extended partition and that you have it set with the Boot or Active flag, while at the same time you have Grub also installed in MBR.
It really should be one or the other.
And, I would instead of Extended, install Grub to the /root partition (in your case, a logical partition inside the extended partition), and set the /root partition as Boot or Active, if you wish to go that way.
But, on that, I am uncertain if you should be installing Grub there on a Win8 system, anyway.
There are successfull triple-boots in other threads, here. You might try hunting them down for good advice.
Or wait for some of my friends, who have the W8 and UEFI/EFI knowledge, to chime in.
Best of Luck. Someone here will get you going, just be patient until they spot this thread.
Looking again, though I am just guessing from what I recall w8-users on this forum, I think on your system sda1 should be set as the Boot or Active partition, and Grub left installed on the MBR, not the extended partition nor the logical partition.
But, as I said, just a guess while waiting for those with the w8-UEFI/EFI experience to jump in here.
ok look in the EFI/boot/ partition and see if there are all 3 OS’s represented. Boot control is in the partition now. And you should also be able to choice in the UEFI BIOS which to boot.
In Linux I think it is mounted as /boot/EFI/boot
In openSUSE, the EFI directory, in the FAT partition, is mounted as /boot/efi. The EFI directory contains directories created by the os installation process.