Getting 404 error on category page

Question

I have 2 root categories and subcategories in every one of them.

One of root category(Default Category) and sub categories are showing on navigation menu. It's OK. That's what I want.

The other root category (name: Collections) is not showing in navigation menu and I can't access any collections's subcategory's page. It's getting 404 error.

I think it's related to System > Manage Stores page root category settings. It's saying Root category is default category.

So If you understand what I mean, how can I access not-default root category(Collections)'s subcategories?

Answer 1

In Magento you can only have one root category per store.

If you are unfamiliar with Magento's Global->Website->Store->Storeview Scope structure , try reading something like this: Magento Multi Store, Websites and Storeviews Explained or this:How to set multiple websites with multiple store views in Magento

Long story short. In the front-end you cannot have two Root Categories shown simultaneously. Make two Level-1 categories Root->Default and Root->Collections and move the respective subcategories in there.