Diskpart

I am trying to do a diskpart/clean all via command prompt. Should the command prompt opened via repair menu at startup be at c:\windows\system32 or x:\sources or doesn't matter? Here is the tutorial that I am doing this according to:

http://www.sevenforums.com/tutorials/52129-disk-clean-clean-all-diskpart-command.html

Also when I hit shift + F10 according to tutorial at windows installation window on startup from dvd it doesn't work.

Have you changed your BIOS boot order to the CD/DVD as the first priority?

Use Option #2 of this tutorial:

http://www.sevenforums.com/tutorials/668-system-recovery-options.html

Hi,

SHIFT+F10 should definitely open a command prompt window at the languages screen when booting from an installation DVD/USB, at this location X:\>Sources

Then simply run diskpart, and then clean all