high percentage of disk read write??

using lenovo netbook running windows 8, check task manager performance of disk,  very high   percentage of time the disk processing read or write request. what cause the high utilization? How to find and fix it to lower the utilization to enhance the disk performance?
litmicAsked:
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JohnBusiness Consultant (Owner)Commented:
Open Admin Tools, Resource Monitor (Desktop not Metro) and click on the Disk tab. This will tell you what is using the Disk and should then shed light on your issue. Please let us know.
David Johnson, CD, MVPOwnerCommented:
low memory causing large amounts of swapping to disk.
search indexing (wll quiet down eventually runs at a very low priority)
Michael-BestCommented:
Disable Search Indexing.
For reading on how to do this see: addictivetips.com

Link:
http://www.addictivetips.com/windows-tips/how-to-permanently-disable-search-indexing-in-windows-8/

Also consider the advantages of upgrading your memory to the max.

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Gerald ConnollyCommented:
I fixed my similar issue, by installing an SSD as my system disk - no problems at all now
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