How and where to add a volume in Linux?

Question

linux

I have Windows, Ubuntu and I also want to try Elementary os. I ran into a problem that I can’t add another volume for this OS (an error occurs). How to be?

Answer 1

Now, if you had given a mistake to the letter, you would not have had a price.

Answer 2

You already have 4 primary partitions on the disk. Delete one, or create a logical one