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How are hard drives written to and read from?


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#1 hardware beginner

hardware beginner

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Posted 13 February 2013 - 12:36 PM

How does it happen on the motherboard? I searched a lot and couldn't
find a detailed explanation that I could understand. I click a file on
my computer, this is retrieved from the hard disk and then displayed on
my screen. From what I've found it's some sort of interaction where the
keyboard sends an interrupt signal and somehow this sends an address to
the CPU and the CPU sends that to the hard drive, and RAM is involved. I
can't find information that lays out step by step what happens.



I also couldn't find a proper definition of external data bus. Which
part of the motherboard is it? Does it refer to all the traces outside
the CPU or what?



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#2 Chris Cosgrove

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Posted 16 February 2013 - 06:57 PM

I don't think there are any 'simple' or easy to understand explanations for these processes, I think a degree in computing science would be a good starting point ! ( I don't have one )

 

More seriously, while I am all in favour of a good theoretical understanding of what is going on, this level of theory is hardly relevant unless you are planning on designing computers. It certainly isn't necessary for the day to day problems that crop up with them.

 

Regards,

 

Chris Cosgrove






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