Will Wind 10 once installed erase the previous operating system?

[WPCentral Question]

I have currently a Windows 7 Prof running on XP mode for my older software. Will all that be erased?

 

[xandros9]

1. Your previous Windows install'll probably be stashed into another folder.

Even then, make a complete backup or an image of the computer. (I recommend Macrium Reflect since the built-in thing gave me issues in the past.)

You'll lose XP Mode, but then again you can easily get a VM running. (see VMWare Player and it's Unity mode, which I believe to be the same.

 

[Jas00555]

Yes, it will still be there for 1 month while you try out Windows 10. If you don't like it, you'll be able to roll back to Windows 7

 

[EL620]

You can backup your partition before upgrading. Previous installations will be moved to windows.old Folder on the main drive. There are apps like ccleaner, wise care 365 and disk cleanup which can remove old windows files. If that happens, you will be stuck on windows 10 with a clean install of 7 as your only way back.