I am struggling with getting Ubuntu and Windows installed alongside each other.
- I have two hard disks and Windows was installed some time ago on
/dev/sddwhere also the UEFI Partition lives.
- Ubuntu is installed to
Now the problem: Once I connect the Linux SSD I can boot into Windows exactly once. I can select ubuntu in the UEFI Bios to boot and the grub will come up and allow me to boot into Ubuntu without problems. Changing the UEFI boot setting back to the Windows Bootloader will no longer work and I am unable to select the chainload option in my grub boot menu either.
The Windows bootloader will start apparently - but then I get the
0xc000000e Boot error and Windows won't start at all after that point.
Now the funny part: Once I unplug the ubuntu drive - windows will boot just fine again.
Honestly I am at a loss as to why this is happening. I intentionally wanted Ubuntu and Windows to be on two seperate drives and not touch the Windows bootloader so when I no longer need Ubuntu I can just unplug the Disk or format it and be fine with it. But for some reason the existance of the disk will screw up Windows.
I have disabled fast boot in Windows and disabled legacy boot in UEFI to make sure I am not trying to mix these two.
Any Ideas are welcome - I am honestly at a loss how to explain what the system is doing.
One thing I am still looking into is that the Ubuntu disk may be a MBR Disk and not GPT - I think I read somewhere that this can cause troubles with UEFI - still does not explain why I can boot Ubuntu and not Windows (so apparently the bootloader runs in either case).