create a new partition on your existing drive and dual boot 3).

If you did a Install of 7 or 8 and formatted the drive and left the PC on the internet it would spend a day doing Microsoft updates and very little would be left to recover on c: If you currently have a C: & D: drives you could copy c:\users\Username\My Documents\ to D:\users\\Username\My Documents\ If you merely do a quick format of C: (without copying anything or installing anything on C then data recovery programs can recover much of your data to another hard drive but you often loose the names of files & folders You must backup your important data to another hard drive (internal, external USB or over network) before installing Windows 10 trial beta It is not recommended to install Win 10 (time limited trial beta) if this is your only PC regards Mike Barnes Do you have some software that try to help me to backup my registry also the Programs I installed and can be seen through the (Control Panel\All Control Panel Items\Programs and Features) after the Reformat.

It would be very unwise to use such an early preview version as your only operating system.

Make sure that you have very good backups of any important data and the means to reinstall Windows 7 should things go wrong.

If you don't have a disaster recovery/backup plan you shouldn't be playing around with Windows 10. install to a new hard drive (my favourite as it leaves the original drive intact) 2).

After all, it's a free upgrade until a year from now.

That really depends on whether the new features matter to you or not.

Released in 2009, Windows 7 is one of Microsoft's finest OS releases, right up there with Windows 95, 98 and XP. Though users can switch between the Start screen and a desktop view, the two UIs clashed and confused users.

I want to reformat my PC to Windows 10 (Build 9860) Technical Preview without deleting files , I think I cannot backup my whole system (460+Gb) using Acronis True Image.

Is it possible to recover my files using Stellar Phoenix Windows Data Recovery after the Reformat and also how to use it.

And what is RAID Recovery is it really possible to recover all my files after the reformat.

Hi If you upgrade a Windows operating system without Formatting the c: drive your data will still be in the c:\users\Username\My Documents If you Install Windows and Format C: during the process (this will happen if going from XP to 7, 8 or 10) then most of your data will be lost and how much is left to recover is un-predictable.