how to instatall double system on double disk

Installing a dual system on two separate disks involves several steps, including creating a bootable drive, partitioning the disks, and installing the operating systems. Here's a step-by-step guide on how to proceed:

1. Create a Bootable Drive: Before you start, ensure you have a bootable drive for the operating system you want to install. If you haven't already, you should install Windows and create a bootable drive for it.1

2. Prepare Your PC: It's crucial to back up all important data files before starting the partitioning process. You can usually partition a disk drive and install a new operating system without losing data, but it's always safer to have a backup.1

3. Partition the Disks: You need to partition each disk to create space for the new operating system. If you're installing Ubuntu alongside Windows 10, Ubuntu will allow you to shrink the pre-existing Windows partition and make room for itself.2

4. Install the Operating Systems: Insert the bootable USB flash drive into an open USB port on your computer. Restart your computer and boot from the USB drive to start the installation process. Follow the on-screen instructions to install the operating system on the desired disk.1

5. Configure the Boot Menu: If you have two hard drives, each with an independent and bootable operating system, you can use a tool like EasyBCD to add the second drive to a Windows Dual Boot menu. This allows you to choose which operating system to boot when you start your computer.34

6. Customize GRUB Setup (if necessary): If you're using Linux distributions, you might need to customize the GRUB (GRand Unified Bootloader) setup using a tool like GRUB Customizer to manage multiple boot entries effectively.5

7. Confirm System Operation: After installing both operating systems, confirm that each is running as expected. You can do this by booting into each system and checking for proper functionality.6

By following these steps, you can successfully install a dual system on two separate disks, allowing you to choose which operating system to use each time you start your computer.