Starting Windows 10 and 8.1 installation Begin the setup process for both operating systems
Starting Windows 10 and 8.1 installation Begin the setup process for both operating systems
Open System Properties.
Navigate to Startup and Recovery options.
I also use Grub, but Burg works fine too. [Check the links in the replies for further details.]
No, you can't remove your new 10-partition setup and try booting just with the 8-partition.