Hello. Possibly, but it will create a number of problems http://www.erahost.ru/faq.php How can I change the primary domain account? answer the question
You can do it only by request to the tech support. The primary domain can be done only one domain , which are currently not on the server. you can Not make the main parkovanie or additional domain, before doing this it is necessary to remove from the panel! Folder of the primary domain public_html only if you make additional the main domain, the site will not work until you will take in public_html |