Question on installing software on a brand new system??

[Notorious Lee]

Once you have built your PC & set the bios settings am I correct in saying that the first thing you need to install is the operating system?

Even before installing drivers including the motherboard drivers, etc?

 

[Notorious Lee]

The reason i am asking is because i want to have both my hard drives in raid 0 configuration but haven't set that up yet.

Do I do this before installing the os because if so i will need to boot up the mobo dvd?