009 Embedded Linux-ARM. StorageQueries and discussion related to usage of Linux on ARM based devices. Linux has been ported to a variety of CPUs which are not only primarily used as the processor of a desktop or server computer, but also ARM, AVR32, ETRAX CRIS, FR-V, H8300, IP7000, m68k, MIPS, mn10300, SuperH, and Xtensa processors, It is also used as an alternative to using a proprietary operating system and toolchain. » 009.01.Linux Boot Process » 009.01.16.Introduction-to-BIOS-IQs
When a computer is turned on, the BIOS performs a Power On Self Test(POST) to ensure that the computer's hardware is working properly. It checks the CPU, memory and basic input-output devices for functionality. Any error during the boot process is signalled to the user through a series of beeps, or through error displays on the screen, in modern systems.
When computer is turn on ,The BIOS(Basic Input /Output System) performs the POST(Power-On Self- Test),This is a critical step to ensure that the computer's hardware is functioning correctly before the OS loads.It check the CPU ,memory and basic input-output device for functionality. Any failure detected during POST is typically signaled to the user through the series of beeps or ,in more modern systems,through error messages displayedon the Screen.
