Installing Operating Systems
After the individual partitions have been successfully installed, you can begin with the installation of the individual operating systems.
This should be carried out with care as well. If you should accidentally select the wrong partition during installation, you might overwrite another operating system.
This risk can be lessened by activating the respective partition before starting the installation. This means that you select that partition as the boot partition. Just select the boot partition from the partition table and label it "active."
Most operating systems will then suggest the thus activated partition in their setup program during installation.
Using a bootmanager that hides all other partitions while installing the operating systems increases safety even more. This prevents selecting the wrong partition during the operating system installation. Such a function is offered by the bootmanager program BootStar.