Adding dual boot Windows 7 to Windows 10 PC

I bought a Lenovo Yoga 3 with a 256gb hard drive. It comes with Windows 10 on it, but I need Windows 7 for work. I have choice of wiping the drive and installing 7 or installing Windows 7 as a dual boot additional OS in another partition.  I know I can install a dual boot Windows 10 on any machine with 7 already installed and it will automatically create a dual boot menu, but does it work the same way if I try to install 7 on a 10 machine? If not, is there any known issue with wiping it and installing just 7? Also, would 256gb be sufficient space for the two partitions?  Thanks for the help.
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rindiConnect With a Mentor Commented:
Why don't you install Windows 7 as a VM? Windows 10 Pro includes Hyper-v, you would just have to add the feature via control panel, programs and features.

If you are using Windows 10 home, you can use VirtualBox and install Windows 7 within that.

If you really need Dual boot, first just reduce the size of your partitions so you have space available for Windows 7, then boot your Windows 7 DVD and install it to that new partition. The boot manager of Windows 7 will get installed and you'll have both, Windows 7 and 10 in your boot menu. Should something not work as expected, you can also add EasyBCD and use that tool to add Windows 10 to the boot menu.
PCGenieLAAuthor Commented:
Thanks Rindi. What exactly are the advantages of using a virtual machine over a dual boot?
You can run both OS's simultaneously. You don't have to reboot to change your OS.
PCGenieLAAuthor Commented:
Thanks Rindi. Very helpful.
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