A quick start method for starting up a system easily and quickly is disclosed. A memory control unit reads the start-up data prestored in a storage unit, using auxiliary power supplied from an auxiliary power supply unit. Also, the memory control unit writes the read start-up data into RAM. As well, the memory control unit reads and outputs the start-up data written in RAM when the main power is turned on.
1. A storage device comprising:
a non-volatile storage unit for prestoring start-up data that is an operating system including a boot image and an application program running on it to start up a system;
an auxiliary power supply unit for supplying auxiliary power, which is different from a main power for use in starting up said system, to said storage device;
start-up RAM for storing said start-up data using said auxiliary power; and
a memory control unit for reading the start-up data prestored in said storage unit and writing it into said start-up RAM when the auxiliary power is supplied, using said auxiliary power, and reading the start-up data written in said start-up RAM and outputting it to said system when said main power is turned on.
2. The storage device according to claim 1 , comprising a plurality of said start-up RAMs, wherein said memory control unit writes the same start-up data in said plurality of start-up RAMs.
3. A method for starting a system using start-up data stored in a storage device having start-up RAM, comprising:
supplying auxiliary power, which is different from, main power for use in starting up said system, to said storage device;
reading said start-up data from a storage unit, prestoring said start-up data, using said auxiliary power;
writing said read start-up data into said start-up RAM, using said auxiliary power;
reading the start-up data written into said start-up RAM when said main power is turned on; and
outputting the start-up data read from said start-up RAM to said system.
4. The method according to claim 3 , further comprising writing the start-up data read from said storage unit into each of a plurality of said start-up RAMs.