Computer system, memory management method and program thereof

A memory management method of a computer system structured to transfer a program stored in a non-volatile storage unit to a main storage unit, comprising:

• a first step of storing said program subjected to predetermined data conversion and said program yet to be subjected to predetermined data conversion in said non-volatile storage unit;
• a second step, operable upon memory access of OS and an application program after start-up of said computer system, of transferring a program subjected to predetermined data conversion among said programs stored in said non-volatile storage unit to said main storage unit to execute reverse conversion to the predetermined data conversion;
• a third step of changing a physical address of said program stored in said non-volatile storage unit to a physical address of said main storage unit;
• and
• a fourth step of assigning a capacity of a plurality of logical blocks for expanding data in a block including one physical address of a predetermined capacity assigned to said program which is stored in said non-volatile storage unit.

A memory management program for causing a computer which controls operation of a computer system structured to transfer a program stored in a non-volatile storage unit to a main storage unit to execute:

• a procedure of storing said program subjected to predetermined data conversion and said program yet to be subjected to predetermined data conversion in said non-volatile storage unit;
• a procedure, operable upon memory access of OS and an application after start-up of said system, of transferring a program subjected to predetermined data conversion among said programs stored in said non-volatile storage unit to said main storage unit to execute reverse conversion to the predetermined data conversion;
• a procedure of changing a physical address of said program stored in said non-volatile storage unit to a physical address of said main storage unit;
• and
• a procedure of assigning a capacity of a plurality of logical blocks for expanding data in a block including one physical address of a predetermined capacity assigned to said program which is stored in said non-volatile storage unit.