You can visually insert a radio button into your form and set its properties. Use radio buttons when you want users to select only one choice from a set of options.
You deleted everything from your USB key or a drive, so there should be enough free space to copy the new files, but you still get the not enough free space message in Mac OS X? This is what you need to do.
In this lesson I will show you how you can easily change the default search engine in Google Chrome in which you can search straight from the address bar or you can also add a custom search engine.