An information processing apparatus operable in a partitioning mode capable of forming a plurality of independent partition blocks in which a plurality of hardware resources are arranged into a plurality of physical partitions and at least two of the plural physical partitions operate as an independent partition block, each independent partition block comprising: a partitioning mode information retaining section for retaining partitioning mode information as to whether or not said information processing apparatus is operating in the partitioning mode; a hardware resource management information retaining section for retaining hardware resource management information concerning a sharing state of the hardware resource while said information processing apparatus is in the partitioning mode; a failure notifying section, provided for each of the plural physical partitions respectively, said section comprising a register and which is arranged for detecting a failure occurrence in a hardware resource belonging to its physical partition and setting a failure notification bit in said register upon the detection of the failure occurrence; an operation mode detecting section for detecting, on the basis of the partitioning mode information retained in said partitioning mode information retaining section, that said information processing apparatus is operating in the partitioning mode; a shared hardware resource judging section for judging, on the basis of the hardware resource management information retained in said hardware resource management information retaining section, whether or not the hardware resource in which the failure occurrence has been detected by said failure notifying section is shared by two or more of said plural physical partitions; and a common failure report creating section for creating, if said operation mode detecting section detects that said information processing apparatus is operating in the partitioning mode and the result of the judging by said shared hardware resource judging section is positive, a common failure report on the basis of the failure notification bits output by said notifying section in each of said two or more physical partitions, wherein each independent partition block includes an Operating System; and wherein said common failure report creating section is arranged to read all the failure notification bits in the register of the plural physical partitions and create said common failure report for sending to the Operating System of the independent partition block comprising said section, by calculating a logical sum of the failure notification bits output by each of said two or more physical partitions sharing the failed hardware resource. a partitioning mode information retaining section for retaining partitioning mode information as to whether or not said information processing apparatus is operating in the partitioning mode; a hardware resource management information retaining section for retaining hardware resource management information concerning a sharing state of the hardware resource while said information processing apparatus is in the partitioning mode; a failure notifying section, provided for each of the plural physical partitions respectively, said section comprising a register and which is arranged for detecting a failure occurrence in a hardware resource belonging to its physical partition and setting a failure notification bit in said register upon the detection of the failure occurrence; an operation mode detecting section for detecting, on the basis of the partitioning mode information retained in said partitioning mode information retaining section, that said information processing apparatus is operating in the partitioning mode; a shared hardware resource judging section for judging, on the basis of the hardware resource management information retained in said hardware resource management information retaining section, whether or not the hardware resource in which the failure occurrence has been detected by said failure notifying section is shared by two or more of said plural physical partitions; and a common failure report creating section for creating, if said operation mode detecting section detects that said information processing apparatus is operating in the partitioning mode and the result of the judging by said shared hardware resource judging section is positive, a common failure report on the basis of the failure notification bits output by said notifying section in each of said two or more physical partitions, wherein each independent partition block includes an Operating System; and wherein said common failure report creating section is arranged to read all the failure notification bits in the register of the plural physical partitions and create said common failure report for sending to the Operating System of the independent partition block comprising said section, by calculating a logical sum of the failure notification bits output by each of said two or more physical partitions sharing the failed hardware resource.