How do you install two OS into one system?

Requirements in setting up dual-OS in a computer:

• Basic knowledge in installing Operating Systems
• Setup disks for the two Operating Systems you would like to install
• Bootable disk
• Un-partitioned free space
• Multiple partitions for the installation of the two OS

To install two Operating Systems on your computer:

• Back-up all your important files
• Make sure that you have the installation disks for the two Operating Systems you would like to install
• Check the disk allocation of your system and resize it if necessary
• Install the Operating System for the first partition
• Install the other OS on your second partition
• Configure the boot loader
• Try to boot each installations to see if the configuration works
• Install all or any software applications you need on the operating systems

For step-by-step procedures in installing two operating systems on your computer, you may also visit http://www.wikihow.com/Install-Two-Operating-Systems-on-One-Computer.