How to automatic upgrade Linode Shared server to unmanaged Dedicated server. Do I have to install all the softwre.

In resizing your Linode from a Shared plan to a Dedicated plan, all of the contents of your Linode's disk are preserved. There is simply a migration to a new host that supports your new plan type, and your Linode should boot with all of the data that existed prior to the migration.

You can read more about it here:

• https://www.linode.com/docs/guides/resizing-a-linode/

I have gone through The link you have shared but i want to know that when upgrading from shared to a dedicated server, will i have to install my sql, php, apche, magento and configure the dedicated server. Or I will get all this installed and I can use my site once my linode is powered on.