How to dual boot Windows 10 and Windows 7 By J W Stuart
You have upgraded or performed a clean install of Windows 10 and find that you need Windows 7 for some of your applications. Here is how you can reinstall Windows 7 (or 8.1) and still keep Windows 10.
Things to keep in mind: 1) Your PC refuses to boot and or unexpected PC crashes could damage or even delete your files, so you should create an Image backup your Windows 10 installation before you proceed to install Windows 7.
2) If you purchased a new computer with Windows 10 preinstalled then check your manufacture’s support web site to see if there are Windows 7 (or 8.1) device drivers available. The lack of device drivers is a good indication that your new computer is not Windows 7 compatible.
3) If you upgraded from Windows 7 or 8.1 to Windows 10 then you cannot use your existing product key to re-install Windows 7 or 8.1 as it was the basis for your free upgrade to Windows 10. Therefore you must either have another unused product key and installation media or purchase another copy (OEM or Retail) version of Windows 7 or 8.1, note that anyone who offers to sell you just a product key without any installation media may be a scammer.
4) Create an Image Backup of your existing Windows 10 installation before you start the process of installing Windows 7 or 8.1
5) You will need to “Shrink” the existing Windows 10 partition to create space (another partition) for Windows 7 or 8.1.
6) Once Windows 7 is installed you will need to re-install your applications that are not compatible with Windows 10 so locate the application(s) installation media and associated product key(s) that need to be re-installed.
How to dual boot Windows 10 and Windows 7 ----->>> Understanding Disk Drive Partitions and what needs to be backed up ----->>> Image Backup Strategy ----->>> Initial Baseline Image Backup ----->>> How to create space for a Windows 7 partition on your disk drive ----->>> Installing Windows 7 ----->>> Final Image Backup ----->>> How to access the GUI (Graphical Boot Menu) ----->>> Chkdsk always runs on my dual boot computer ----->>>