PS4 - asking for disk

[TonyACT]

^ Thanks - that pretty much captures my thoughts as well. I have been chatting in-game with PS4 folks who don't need the disk inserted; and as you note I can't download the game again as it says I already own it - the store should let us download some sort of activation so we don't need a physical disk (since it's already linked to our PSN id and can't be used again by anyone else). It's all kind of silly and I hope this is changed at some point in the future.

[HEC]

I can't download the game again as it says I already own it

It's becasue you're trying to purchase it again (which you can't of course) - you need to only re-download it. Backup your game saves (not really needed though), uninstall the game, then got to the Library on the main PS4 screen / menu and re-download the game from there.