How to create a 'System Repair Disk' in Windows 7

We can create a 'system repair disk' or cd repair system in Windows 7 as a precaution when the later one day if we do not get into Windows. CD repair system will run the Windows Recovery Environment, which contains tools that will recover/restore a Windows system we are not able to boot.For the record, we can also use the DVD of Windows 7 to boot into Windows Recovery Environment. This paper is