'''FutureOS''' can be launched from AmsDOS with the RSX commands |OS or |FDESK. If you use |FDESK you can leave '''FutureOS''' and get back to BASIC where you have stopped before - the first 48 KB (not the screen) have been preserved.
'''FutureOS''' only runs well on a [[CPC6128|CPC6128]] or 6128plus (not CPC464 or 664), because of their support for RAM configuration C3 (essential for the mouse pointer). FutureOS is not compatible with native [[AMSDOS|AMSDOSFirmware]] or [[CP/M|CP/M]] programs, but supports their data structure. It needs a [[Class]] 2 CPC, it runs best with a [[Class]] 4 CPC or higher.
'''FutureOS''' does not require the native CPC-OS, except its character set. If you replace the lower ROM by the [[CPC FutureOS lower ROM]] for example, then FutureOS will start directly.