A:
No. you can only upgrade from 7. you will need to do a clean install. Honestly, its better to do that. much cleaner. back up your files, when you install and see the options for upgrade and advanced, choose advanced. upgrade will save your current windows install in a folder called windows.old and take up TONS of space. in advance, choose drive options and delete all partitions. again BACK UP FIRST! Anything and everything!!!