I have dual booted my laptop with windows 8.1 and Ubuntu 15.04. Windows came as a OEM with the laptop so I didn't delete it as I paid for it and I am not using it though. I want to know if I do the free upgrade to Windows 10 will it destroy my Ubuntu partitions? or will it mess up anything in the boot files or grub?
Ubuntu – Dual boot with windows 10 (upgrade from Win 8.1 OEM)
15.04dual-bootsystem-installationwindows
Best Answer
I just upgraded to Win 10 from Win 7, and the update manager did not bother on touching grub or other partitions. It just upgraded its own partition.
I used the Microsoft Media Creation Tool to upgrade. (I was impatient)