Computing device method that presents as a single file system operating system components in both executable and non-executable memory

A computing device comprising a non-executable memory, an executable memory, and a file server, and programmed to:

• store an operating system, comprising a first component and a further component, in the non-executable memory;
• copy the first component from the non-executable memory to the executable memory at operating system start-up, so as to permanently shadow the first component in the executable memory during device operation;
• present, to the file server, the first component in the executable memory and the further component in the non-executable memory as a single file system;
• wherein the first component is accessed from the executable memory, where it is shadowed permanently, and the further component is accessed by selectively copying the further component to the executable memory upon demand by the file server, for subsequent use with the permanently shadowed first component by the file server.

Computer software arranged to cause a computing device, comprising a non-executable memory, an executable memory, and a file server, to:

• store an operating system, comprising a first component and a further component, in the non-executable memory;
• copy the first component from the non-executable memory to the executable memory at operating system start-up, so as to permanently shadow the first component in the executable memory during device operation;
• present, to the file server, the first component in the executable memory and the further component in the non-executable memory as a single file system;
• wherein the first component is accessed from the executable memory, where it is shadowed permanently, and the further component is accessed by selectively copying the further component to the executable memory upon demand by the file server, for subsequent use with the permanently shadowed first component by the file server.