[TYPO3] How to delete a site with sub-pages

[A M Sharma]

Hello,

I am new to Typo3. I have been sharing a website development with some 
colleagues. I am unable to delete a root level page (site). Whenever I do 
that it gives me a message: 1: Attempt to delete page which has subpages.

I need to delete & upload while I am trying out new things. Is there some 
way I can do it?

Thanks
Amal