[arunkannan]

I have a doubt regarding system memory initialization..... When will the RAM memory get initialized????????? During POST operation????????? Explain me about RAM initialization in detail????????????????

[shabbir]

RAM is needed by OS and so POST does not need to do that. Post is just checking for your all the hardwares

[pradeep]

On POST (Power On Self Test) the firmware finds, calculates the size, and verifies system's main memory.

[DaWei]

It doesn't always verify. When it does, it's rarely an exhaustive, highly effective test. It is not initialized prior to use; there's no need.