I have a Macbook Air and when i tried to launch the operating system on it, and then i am getting the Apple logo on a white screen along with a grey progress bar at the bottom and after getting this my machine hands. I am able to access the Disk Utilities from the MAC OS X DVD with the help of the superdrive. I have tried to re-install it, but not getting to solve it out. I have even purchased a DiskWarrior. It is allowing to find the data on the drive, but i want to ask you one thing that how can i replace the directory structure. It tells me to copy the files to another drive. How can i copy those files to another drive because i have only one USB port and that also is used by the superdrive? Do suggest me the solution for this problem so that i will be able to solve it out.