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C: drive 100% when copy file from D: to E:

I encountered a disk usage problem for D when I am copying files from D to E just now and Google search gives no clear solution for this situation. Task manager stated that ntoskrnl is using the disk frequently, is it the problem of setting my portable drive E: to high performance that it cache the file from D into C then move to E:?

 

P.S. D and C refer to drive D and drive C, it keeps formatting to emoji

Edited by junzhi2002
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Are these mechanical hard drive's or SSD drives?

What is the transfer speed showing as when disk usage is 100%?

Are there any disk errors in event viewer?

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On 5/16/2020 at 4:01 AM, ictdude1 said:

Are these mechanical hard drive's or SSD drives?

What is the transfer speed showing as when disk usage is 100%?

Are there any disk errors in event viewer?

C drive is SSD while the rest is HDD

 

Peak transfer speed is about 80~100MB/s

 

No... there isnt any warning nor errors

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