Pet...Is it the full version you have, or the upgrade?
To be able to do an inplace upgrade to Win7, you can only do it via these operating system paths...
Windows Vista Home Premium to Windows 7 Home Premium
Windows Vista Business to Windows 7 Professional
Windows Vista Ultimate to Windows 7 Ultimate
..otherwise, yes, its a clean install...
If you do a clean install, it wont format your drive. It will rename your existing windows directory to windows.old and copy all your old profile and data structure into that directory ( which enables you to copy it back after the install, but, programs do need to be re-installed ), then it install windows into a new windows directory.
To be able to do an inplace upgrade to Win7, you can only do it via these operating system paths...
Windows Vista Home Premium to Windows 7 Home Premium
Windows Vista Business to Windows 7 Professional
Windows Vista Ultimate to Windows 7 Ultimate
..otherwise, yes, its a clean install...
If you do a clean install, it wont format your drive. It will rename your existing windows directory to windows.old and copy all your old profile and data structure into that directory ( which enables you to copy it back after the install, but, programs do need to be re-installed ), then it install windows into a new windows directory.