I did everything and have OS-X install screen up.
When I go to Utilities>Disk Utility, and select the partition I want to format as Mac OS Extended(Journeled) and click erase, it says "Could not mount diskOs3 with name ____ after erase" where diskOs3 is the name of the partition and there's a space after "name"
When I go to Utilities>Disk Utility, and select the partition I want to format as Mac OS Extended(Journeled) and click erase, it says "Could not mount diskOs3 with name ____ after erase" where diskOs3 is the name of the partition and there's a space after "name"