Mirror two drives gives different results

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dasmueller

I ran this software for the 1st time yesterday. It took a little over 19 hrs. When I right clicked each folder and selected properties I got different results. Folder qty was equal but file qty was 1558 more in the original folder
Any thoughts as to why ?
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dasmueller

here is a screenshot

Image
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Zenju

https://freefilesync.org/faq.php#explorer-mismatch
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dasmueller

I do not see how to check for errors. Long file paths- I do not think there are any greater than 260 characters. Drilling down to individual folders means comparing each folder and the files in it ? That would take forever w over 3400 folders.
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Zenju

That would take forever w over 3400 folders. dasmueller, 07 Dec 2017, 16:53
With a binary approach only O(log(n)).
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dasmueller

Can you elaborate, I do not understand.
I did find that when I clicked on filter and removed Thumbs.db the numbers changed. The source folder has 1107 of those but that is not the total difference. There are still 541 more files in the source folder
thanks
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Gianni1962

@dasmueller

Try to compare using "Beyond Compare", you can try it for 30 days.

Use the "Binary comparison" in "Compare Contents..." in the Actions menu.

It can compare a folders tree without intervention and gives you a detailed report at the end.
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Zenju

Try to compare using "Beyond Compare", you can try it for 30 days. Gianni1962, 07 Dec 2017, 18:49
Why should "Beyond Compare" find anything that FreeFileSync does not?
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dasmueller

ok, if I go into folder options and unclick Hide protected system operating files I can then see the Thumbs in the source folder.

That still leaves the other 541 files that I have no clue about what and where they are
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dasmueller

I deleted all the filter items and then I got a total that corresponded to the difference between the Source and Target folders.

There were a bunch of desktop.ini files there along w the thumbs. As neither of these appear to be causing any issues I will probably just leave them. The real concern I had was if I was missing any music files themselves

Thanks guys for your help !
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Gianni1962

Why should "Beyond Compare" find anything that FreeFileSync does not? Zenju, 07 Dec 2017, 19:37
Just to give dasmueller an option to verify that FFS does its job correctly or find the reasons if not.