Is it possible to Windows 10 and Windows 7 dual-boot?

[RolandJS]

Yes, I think you install Windows 7 first, then install Windows 10. I read somewhere a while back that the oldest OS goes first, then the newest OS. Others will correct me if what I read no longer applies. Will you be sooner or later adding RAM? Adding another hard-drive to become your data drive?

 

[tudor1]

Some months ago I wanted to get a new ssd but then I decided to no. I might get a new one sometime.

 

[tudor1]

UPDATE: I went to my UEFI and when I activated the Legacy ROM's it said that my laptop is not compatible to boot Windows 7 or 8.1 so i'm going to use a virtual machine for this.

 

[RolandJS]

That should work! Over here, in my two W7Pro laptops, I used MS' built-in virtual machine stuff...and have been sporadically using Windows XP Mode, in said virtual world.

 

[2W10]

Yes, I think you install Windows 7 first, then install Windows 10. I read somewhere a while back that the oldest OS goes first, then the newest OS. Others will correct me if what I read no longer applies. Will you be sooner or later adding RAM? Adding another hard-drive to become your data drive?

As long as it is Vista-10, the order doesn't matter. I've installed Vista after 8.1 and 10, and both OSes still work. You could even install 2000/XP after Vista-10, but you would need to rebuild the bootloader with something like EasyBCD or bootrec and bootsect.

 

[2W10]

UPDATE: I went to my UEFI and when I activated the Legacy ROM's it said that my laptop is not compatible to boot Windows 7 or 8.1 so i'm going to use a virtual machine for this.

Give us all the specs of your laptop. If it is Broadwell or Skylake, you might be able to install Windows 7 on your machine.