Method and electronic device of file system prefetching and boot-up method

An electronic device of file system prefetching, comprising:

• a volatile storage;
• a non-volatile storage, and
• a plurality of processors with a plurality of operating systems, wherein one of the plurality of processors is a main processor and the other ones of the plurality of processors are auxiliary processors, the main processor is coupled to the volatile storage, the non-volatile storage and the auxiliary processors;
• when a first static backup table in the non-volatile storage is not empty, the main processor copies all data in the first static backup table to a second static backup table in the volatile storage;
• the main processor checks whether the first static backup table comprises all required data for booting one of the operating systems in a static partition of the non-volatile storage or not;
• when the first static backup table does not comprise all of the required data in the static partition, the main processor copies a part of the remaining required data in the static partition to the first and the second static backup tables;
• when a booting state synchronization of the operating systems is not completed yet, the main processor returns to the step of checking whether the first static backup table comprises all of the required data in the static partition or not.

A boot-up method for use in an electronic device comprising at least two processors, the at least two processors run on at least two operating systems (OS), the boot-up method comprising:

• powering up the electronic device;
• executing system boot-up procedures corresponding to the at least two processors in parallel;
• determining whether a first processor of the at least two processors completes the system boot-up procedure;
• in response to a second processor of the at least two processors being still booting, loading at least a first portion of a data file from a first storage unit to a second storage unit;
• determining whether the second processor completes the system boot-up procedure;
• and
• in response to the second processor completing the system boot-up procedure, executing an OS boot-up procedure corresponding to the data file by the first processor.