In a copy operation why does macOS Big Sur send a lot of packets to the hard drive it is copying from?

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                          Copying a large file from an external hard drive to a Mac, shows a lot of packets first going to the hard drive.

Then there is a period of no disk activity.

Then what I expected happens, packets arrive to the Mac from the hard drive.

What is the Mac sending to the hard drive before the copy operation?

Asked by aquagremlin (347 rep)

Jul 18, 2021, 12:55 PM
Last activity: May 5, 2024, 02:35 PM

In a copy operation why does macOS Big Sur send a lot of packets to the hard drive it is copying from?

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