.htaccess and subdomain- need some quick help

I have a subdomain, folder.mysite.com and I want ALL requests for the domain to go to the subdomain. In my .htaccess file in my root folder, I have:

RewriteEngine On   
RewriteBase /   

RewriteCond %{REQUEST_URI} !^/folder.mysite.com 
RewriteRule ^(.*)$ http://folder.mysite.com/ [R=307,L]  

HTML:

This does the job EXCEPT if someone types in mysite.com/folder.

How do I force a redirect if someone types in mysite.com/folder to folder.mysite.com?

Thanks for any help.

 

I guess you can manage redirection from cpanel , try it there.