Can't delete my home page in Site Solution
The only page of your website that you can't delete using the Manage Pages feature in Site Solution is your home page.
Your home page is the main page of your site, and it's the first page your site visitors see when they arrive. Web browsers can't find the rest of your site if you delete your home page.
The only time you can delete your Site Solution home page is when you delete your entire site. Learn how to delete your entire site.