HDD Partitioning

Hello,

I am trying to install Windows via BootCamp. I tried to partition the HD, but I had problem with it. Then I tried to do it with Disk Utility, but I had the same problem. I checked some forums and they said that I have to repair the HD with Disk Utility by using Original disk and holding 'C' on start-up. Unfortunately, I dont have such a CD as I am using MacBook Air. I would be thankful if someone help me solve that issue. Thank you in advance.

 

My Mac boots. The problem is that I cannot partition the HD in order to install the windows. I am looking for ways ti fix the issue, so I can perform the partitioning. First, I ised the bootcamp assistant for the partitioning, which is part of the procedure. Then, I used Disk Utility, but it failed as well.