ChromeOS Partition installing problem

I'm trying to install Zorin OS on my Chromebook, but idk what partitions to use! the first time I did this, I made a partition in the ChromeOS root, but then I couldn't boot ChromeOS! I saw the Mrchromebox, and Chrultrabook docs, but it never said anything about partitions!

pls help :\

Just follow the installer with the default options. That will create all the partitions that you need automatically. The process is much simpler if you want to use the entire drive, however, dual booting can be more difficult to setup.

Welcome to the Forum!

Do You want to install Zorin as the only OS on Your Machine? If yes, it is like @zenzen wrote. You start the Installer and choose the Option ''Erase Disk'' which erases and format the Disk and create the Partitions automatically.

Or do You want make a Dual-Boot System?