Method and control and/or regulation device for operating an internal combustion engine, and internal combustion engine

The operating method has the fuel mass (ms) injected into the engine combustion chambers by the fuel injectors (22) during the starting of the engine regulated in dependence on the pressure in the common-rail, supplied with fuel by at least one fuel pump. Also included are Independent claims for the following: (a) a computer program for an operating method for a direct fuel injection diesel engine; (b) a control and regulation device for operating a direct fuel injection diesel engine; (c) a direct fuel injection diesel engine