Once this is open, you will see a message that reads, “You must initialize a disk before Logical Disk Manager can access it” For more advanced users, Disk Management can be accessed in the command-lineĢ.If you have a later version, you will want to go to the Power User Menu.First, navigate to “Open Disk Management,” which is included in all versions of Windows For an operating system, you should consider a clean install. When you are partitioning a hard drive, you are really preparing it for the files that will be stored on it.