Prepare Windows PC computer for Dual-Boot

Create free space/shrink Volume.

• Log in to your Windows machine with an administrative account and right-click on the Start Menu -> Command Prompt (Admin) in order to enter Windows Command-Line.

• Once Command Prompt opens, type diskmgmt.msc on prompt, and the Disk Management utility should open. From here, right-click on C: the partition and select Shrink Volume in order to resize the partition.

• On Shrink C: enter a value on space to shrink in MB (use at least 20000MB (25000MB preferred) depending on the C: partition size) and hit Shrink to start partition resize as illustrated below (the value of space shrink from below image is lower and only used for demonstration purposes).
  
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  Once space has been resized you will see a new unallocated space on the hard drive. Leave it as default and reboot the computer in order to proceed with the Ubuntu installation.

• CMD > right-click Run as administrator
• diskpart
• list disk
  • Note disk # corresponding to the desired hard drive
• select disk #
• clean
• create partition primary
• format fs=fat32 quick

Install Linux

• Boot with Linux USB (Ubuntu/Mint/Kali/etc.), double-click "Install [[LINUX OS]] XXXXXXX" shortcut on desktop and follow the installation wizard, at "Installation Type" section, select "Install [[LINUX OS]] alongside Windows Boot Manager".