Before you start the installation, your hardware must be physically installed and recognized by your PC. Dual Boot from Separate Disks - Is it possible?
After the first restart:
This is where you must be careful to select the second drive, not your main one. install windows on second hard drive
To control which Windows starts automatically: Before you start the installation, your hardware must
: Offloading the operating system to a dedicated drive frees up space on your primary storage for large applications and games. Phase 1: Prepare Your Second Hard Drive Before you start the installation
You will now see a list of drives and partitions.