What is the fine-grained topic of the following text: But there is a solution to that ,there are many such softwares in the market which provide the previlage to install an operating system into an another system that may be lower into an higher or vise versa, and that too without formatting the previous one.It is not like that first you have to remove the first one,nor am talking about the dual booting process,but here the case is that first you starts your operating system ,starts your software and the run another operating system into that software. Only return the topic.
Software for running multiple operating systems without formatting