we migrated the sites from 2003 to 2013,in 2013 i am having root site i want to move the root site to site collection with in the same web application using power shell. I used the command after taken back up
Restore-SPSite -Identity "newly created site collection url" -path "D:\backsite.bak"
once i ran this command i am getting the error like "Restore-SPSite: another site collection with name already exists use -force to overwrite the existing site collection "
Again i ran with using -Force command after few minutes again it was throwing error like "we can not rename the site collection"