Saturday, April 30, 2016

grub2 - Windows 10 won't boot after Grub update

I've not been able to boot to Windows 10 after an Ubuntu Update that appeared to upgrade Grub. I was initially getting the error invalid signature when trying to boot to Windows. In the past when I had this problem I booted to the Ubuntu live CD, ran boot-repair and this fixed the Windows boot entry in Grub. Now however I've tried boot-repair a number of times trying different options. I have a /boot/EFI partition. In UEFI I re-enabled CSM and disabled secure boot. I have rEFInd installed although I can't remember installing it. I think Ubuntu and Windows 10 were installed in UEFI mode. When I select the Windows option in Grub it goes to the rEFInd boot loader where there is no option to boot to windows. The options in rEFInd are below and they both boot to Ubuntu:



EFI/ubuntu/grubx64.efi
boot/vmlinuz-4.4.0-97-generic.efi




Ubuntu and Windows are installed on the same NVME drive on separate partitions. The EFI partition is there also. Here the the result of the last boot-repair.



https://paste.ubuntu.com/25735054/



Windows is installed on /dev/nvme0n1p4 and the Ubuntu root partition is on /dev/nvme0n1p5.



Can anyone help with this?

No comments:

Post a Comment

11.10 - Can't boot from USB after installing Ubuntu

I bought a Samsung series 5 notebook and a very strange thing happened: I installed Ubuntu 11.10 from a usb pen drive but when I restarted (...