7/10/2023 0 Comments Default router configuration![]() Finally, the boot loader locates and loads a default IOS operating system software image into memory and hands control of the switch over to the IOS. The boot loader initializes the flash file system on the system board. It initializes the CPU registers that control where physical memory is mapped, the quantity of memory, and memory speed. The boot loader performs low-level CPU initialization. ![]() The boot loader is a small program stored in ROM and is run immediately after POST successfully completes. Next, the switch loads the boot loader software. It tests the CPU, DRAM, and the portion of the flash device that makes up the flash file system. First, the switch loads a power-on self-test (POST) program stored in ROM.
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