Since Windows 10 was released, I’ve made several attempts to set up dual-boot systems between it and a few Linux distributions (Fedora 22, Ubuntu 15.04, Kubuntu 15.04, and Linux Mint 17.2) on a brand new Lenovo G50 laptop.
On an OEM computer that shipped with Windows 8.1 and upgraded to Windows 10, that means setting up a dual-boot system between Windows 10 and Linux distributions on a computer with UEFI firmware.
Some of the attempts were successful, while a few were not. The curious thing is a few of the failed attempts had been reinstalls of once successful installations. And in all the failed attempts, the cause centered around installing the boot loader GRUB, as you’ll see from the following screenshots.
Figure 1 was taken from a dual-boot attempt between Windows 10 and Fedora 22. The installer failed to write the boot loader configuration to the target device, which was the boot EFI partition. But why would I opt to continue with the installation when the system will not be bootable? So, of course, I selected No to abort installation.
And proceeded to file a bug report.
Figure 3 was taken during a dual-boot attempt with Kubuntu 15.04. In this case, I had selected /dev/sda as the device for boot loader installation, so I thought that was the cause of the error.
However, another installation attempt where I chose the boot EFI partition, which was /dev/sda2, just like in the Fedora 22 attempt, also failed. So failure to install GRUB appears to have nothing to do with what the target device is.
The solution that I’ve found is a non-technical one; just keep trying until you succeed. Because, like I noted earlier, I did succeed in dual-booting Windows 10 and Fedora 22 and Kubuntu 15.04 on the same laptop. Since the computer involved is an OEM unit with a couple of OEM partitions, I’m inclined to believe that’s likely a contributing factor. I’ll be attempting the same dual-boot setups on a self-installed Windows 7 desktop that I’m upgrading to Windows 10 and post the results here tomorrow.