Power on, POST, and Boot - Revision history

Kevin.Williams at 00:24, 6 July 2014

2014-07-06T00:24:10Z

Wsebaste at 19:44, 15 September 2011

2011-09-15T19:44:14Z

Wsebaste at 19:43, 15 September 2011

2011-09-15T19:43:13Z

Rfs at 01:01, 20 August 2009

2009-08-20T01:01:15Z

Rfs: /* Accessing BIOS during POST */

2009-06-12T23:48:43Z

Accessing BIOS during POST

Rfs: /* Power on, POST, and Boot: Which is which? */

2007-03-31T23:58:24Z

Power on, POST, and Boot: Which is which?

Rfs at 23:46, 31 March 2007

2007-03-31T23:46:36Z

New page

==Power on, POST, and Boot: Which is which?==

<graphvizl>
digraph D {

node [fontname="Helvetica", fontsize="11"]
edge [fontname="Helvetica"]

poweron [label="POWER ON", shape="box", style="bold"]
post [label="POST", shape="box", style="bold"]
boot [label="BOOT", shape="box", style="bold"]

poweron -> post -> boot

}
</graphvizl>
; Power on
: is what happens when the systems first gets electricity. You may hear a beep or a fan or see the lights come on.
; POST
: means '''P'''ower '''O'''n '''S'''elf '''T'''est and is a basic system check that happens once the system has powered on successfully.
; Boot
: means the computer is loading an operating system, typically off of the hard drive (but it also could load the OS off of a floppy, a CD, or even over the network).

If you see a system trying to boot, then you know it must have POSTed. This means that if you see an OS load (i.e. a system boots to Windows or Linux) then the POST was successful. Likewise, if you see a message similar to "Operating System not found" then the boot is failing, but of course this also mean that the system successfully POSTed.

'''NOTE: We never want to boot from an OS. We, however, do want to try to get the system to POST.'''

[[Category: Prebuild]]

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 __NOTOC__
 ==Power on, POST, and Boot: Which is which?==
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 When finished, be sure to save your changes and reboot. Then you may get the information you are looking for.
 [[Category: System Evaluation]]

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	When finished, be sure to save your changes and reboot. Then you may get the information you are looking for.		When finished, be sure to save your changes and reboot. Then you may get the information you are looking for.

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 ==Power on, POST, and Boot: Which is which?==
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+   }
 </graphvizl>
 ; Power on
 : is what happens when the systems first gets electricity. You may hear a beep or a fan or see the lights come on.
@@ Line 25: / Line 28: @@
 '''NOTE: We never want to boot from an OS. We, however, do want to try to get the system to POST.'''
 [[Category: Prebuild]]