I am trying to install module from odoo 8 to odoo 9.
I just copied over the whole folder to the addons folder in odoo 9 and was expecting that I can somehow install the module in odoo 9 but it doesn't show up in the list of apps to install. Is there anything changed in the structure of odoo that I have to prepare the module to show up in the apps list?
Thanks in advance.
You do not see your modules/apps because you must update list of modules.
First what you need is restart server.
After this login with Administrator and activate Developer mode.
Go to Settings(top menu) -> Update Apps List(left menu) -> refresh page(or better: logout, clear cache, restart server etc. :) ).
After this steps you must see your modules.
Hope this help you.