Partition and firmware upgrading method based on minimum operating system

Abstract

The invention relates to a partition method and a firmware upgrading method based on a minimum operating system. The FLASH partition of a router is made to have a starting bootstrap program partition, an operating system nucleus and root file system partition, a minimum root file system partition and a nonvolatile random access storage device partition. The minimum operating system is stored in the minimum root file system partition and used for being started to carry out firmware upgrading when system crash happens. Through the method, the firmware upgrading operation is convenient, the minimum operating system is developed based on an existing operating system, and hardware cost is saved.

Description

technical field [0001] The invention relates to the field of router equipment, in particular to a router and a partition and firmware upgrade method based on a minimal operating system. Background technique [0002] The FLASH partition of the current router is as follows: figure 1 As shown, it includes three partitions: Bootloader (bootloader, or boot loader), Kernel (operating system kernel) and FS (root file system), Nvram (non-volatile random access memory). [0003] A router usually has only one operating system. When the system boot image file in it is damaged or the file system cannot be mounted, the router cannot work normally. The only way to fix this problem is to update a good version of the software. There are two ways to update the software at present. The first method is to directly enter the Bootloader partition and upgrade through the serial port. This method is often used when debugging codes in the research and development stage. The required hardware fac...

AI Technical Summary

Problems solved by technology

However, if there is a system crash in batches, the FLASH on the routing road must be removed and reworked, which not only increases labor costs, but also wastes time. In the process of removing and welding the FLASH, it is easy to cause product scrapping and increase costs.

[0004] It can be seen that when the system cannot be started, the existing upgrade methods must rely on hardware conditions such as serial ports or burners as support, otherwise the upgrade cannot be completed, which is very inconvenient

However, these two hardware conditions require heavy work on the formally produced routers, which consumes time, manpower, and material resources, and may cause product scrapping.

[0005] The existing technology also attempts to make dual operating systems in the router. When the image file of one operating system is damaged, it can be started from the other operating system, which is equivalent to a backup software, but the hardware cost required by this method will also increase.

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