Is it safe to run Windows 10 preview virtually?

Waka Flocka Flame

or does it pose the same risks MS have listed

• • Remember, trying out an early build like this can be risky. That's why we recommend that you don't install the preview on your primary home or business PC. Unexpected PC crashes could damage or even delete your files, so you should back up everything.
    
    
  • If you want to stop using Windows 10 Technical Preview and return to your previous version of Windows, you'll need to reinstall your previous version from the recovery or installation media that came with your PC—typically a DVD. If you don't have recovery media, you might be able to create a USB recovery drive.
    
  • After you install Windows 10 Technical Preview, you won’t be able to use the recovery partition on your PC to go back to your previous version of Windows.
  
  

dave0212

I am not sure what risk you think they are referring to but they are identifying a failure of your system as a risk meaning i.e. you could lose files a VM would isolate this failure to just the VM running

Jon_Cisco

I ran it as a vm. I didn't use it for every day use so I was not worried about losing everything. I definitely suggest it be a second machine for you and any critical data be stored on another device or backed up properly.

cyberguypr

As Dave said, the risk M$ mentions is that if you install on top of your current OS you could end up with a big corrupted/unusable system with serious data loss. Virtualizing, isolates your main PC and its OS so none of those risks apply. This is no different than sipping up VMs, doing all kinds of unsafe things such as testing malware, and then blowing them up. If properly isolated, that stuff never touches your regular network.