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I have folderA and want to make a copy of all the contents within into FolderB. I select all the contents inside of FolderA then selected copy and went to FolderB and pasted it. When it is done, there is a difference of ~500 files between the two folders when I check the folder sizes.

When I move the files, everything comes across.

I cannot figure out why there is such a big difference? Does anybody know what might be happening?

  • So 500 files that you selected are missing from the pasted result? What about the difference in total file size? Can you identify which files are missing? Are they particular ones? I presume FolderB is empty to start with? – benwiggy Feb 13 at 11:55
  • Yes, FolderB was empty when I started. I cannot identify which files are missing because there are 20,000 folders/files with nested sub-folders under FolderA. The total folder size of FolderA is larger than FolderB. The only thing I can think of is a permission problem but I am not 100% sure. – user1709730 Feb 13 at 12:00
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Is it possible, that there are hidden files in the source folder?

You could use this shortcut in Finder to switch between showing/hiding hidden files.

CMD + SHIFT + .

If you want to make sure to copy the whole content anyway, open Terminal.app and enter

cp -pr /path/to/source /path/to/destination

After typing "cp -pr " in Terminal, you can drag&drop the folder names vom Finder window to Terminal window.

  • It looks like the command cp -pr /path/to/source /path/to/destination was able to resolve the problem with not bringing the whole folder over. – user1709730 Feb 14 at 2:55

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