I'm looking for some help troubleshooting why Windows only boots to a black screen after installing Ubuntu.
I originally had only Windows. It was installed on the only drive in the system, a GPT drive.
Shrunk the drive to allow for the Ubuntu install, and created an Ubuntu installation USB using Rufus. I checked the UEFI boot and GPT options.
Ubuntu installs fine, but now Windows 10 black screens when trying to boot through grub or Mac bootloader.
I tried running Boot-Repair default options, but it didn't work. My Boot-Repair Boot Info Script can be found here.
I installed rEFInd to see if that could help. When booting Windows through it I get
blinitializelibrary failed 0xc00000bb.
I tried deleting Windows hiberfil.sys from Ubuntu, but it didn't work.
I will try to attach potentially useful debug outputs.
sudo gdisk -l /dev/sda :
Found valid GPT with hybrid MBR; using GPT.