A continuously operating system is provided and includes a processor and a computer readable medium to which the processor is operatively coupled, the computer readable medium having executable instructions stored thereon which, when executed, cause the processor to continuously load an operating system and to simultaneously operate as at least first and second mechanisms. The first mechanism loads a new module, which is a new version of an in-memory module of the operating system, into the operating system, and the second mechanism isolates and interrupts current access to the in-memory module such that subsequent access is to the new module.