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Answered 2013-11-04 12:00:26

COLD BOOT (a.k.a. COLD START) - Booting up from power off condition.

WARM BOOT (a.k.a. WARM START)- Restarting the computer WITHOUT turning the power off.

Shutdown option in the START menu of windows 9x/2K/XP has a "Restart" option: this is a "warm boot".


You perform a cold boot every time you turn on the power switch of your computer. To "boot" the computer means to start it up and reset the memory and BIOS. Pressing the Ctrl-Alt-Delete keys simultaneously while the computer is running performs a warm boot. You may need to do this if the computer stops responding because of memory problems or the "Blue Screen of Death" appears. The computer needs to be reset before you can continue. If the warm boot fails to restart the computer, you will need to resort to a cold boot by shutting off the power switch, waiting ten seconds and then turning it back on.


cold booting means ptess ctrl alt del key to restart the system& warm booting means pressing the restart button in the cabinet to restart


Cold Boot: When you start from off state or power off and than on by using the power button. POST is performed.

Warm Boot: When you restart the computer using Alt+Ctrl+Del combination or restart command from the startup menu. POST is not performed during this process which decreases the boot up time and the PC boots faster.


Warm boot is pressing the restart button while the computer is on and a cold boot is pressing the power switch when it is turned off.


hot reset : the power is resuming and the program proccessing countiue at the point at which was interrupt .

cold reset : current data is discharging and program proccessing begins again with start point .

Rana Abu Al-Hasan

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