I was a happy dualboot user with Ubuntu 16 and Win10. This morning I saw an update available, so I installed it. There was very long configuring process before restart. After restart, if I select Windows 10 in the GRUB menu I am stuck on a blank purple screen where nothing happens. I don't know if it's a problem with Windows or it's problem with GRUB that it cannot find the correct way to boot Windows after this update.
Can anyone help me?
I had similar issues on an Ubuntu and Windows 10 dual boot system with the Creators Update. Windows booted after the Creator update with an "inacessible boot device" error message and restored itself to the previous version.
The following worked at my system to finish the Creator Update.
I used the tool EasyBCD and followed this procedure to use the Windows boot manager instead of GRUB2.
Then I didn't put an entry for Linux, so no boot manager appeared during the Windows startup. The Creator Update could then be installed successfully.
Finally, I included the entry for Ubuntu again in the boot manager.
After 4 failed boots I have booted into Ubuntu. Then I tried to set Windows boot manager as primary in BIOS, but it failed and loaded Grub, where I selected Windows 10, then it recognized errors, and restored Windows to its state before the update. So now it works, but I don't know why. Maybe BIOS settings affected something, or maybe Windows detected 5 failed boots and fixed itself.
