FreeFileSync Forum

Will the error only show up in the logs, or will it be immediately obvious on screen when it happens?

Zenju, will FFS alert me if the files don't pass verification? I see there's a log I can click on at the end of a sync session that will list the files copied and verifications performed. I'm not sure what an error would look like, however. Will it simply show up in the log as a process that didn't ...

However, to be fair, since performing some of the tweaks mentioned in the threads like the one linked at the top here, the problem seems to have all but disappeared. I'm still verifying large copied files until I feel confident it won't pop up again. That's really all I'm looking for at this point ...

I would first update all mainboard drivers, especially the USB-related ones, then do a few hardware checks e.g. checking ram, different storage media. If this issue was caused by a Windows bug, it probably would affect way more people than it seems to affect currently.

That's what I'm saying- I ...

Alright, you're facing a real issue then, not some "quantum fluctuation", that can never be outruled in theory.
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Yes, I don't think this bug is on Microsoft's side. Windows does in fact error checking but this can only be as good as the underlying drivers. I suspect the symptoms you are seeing ...

To be clear- I'm witnessing 1 out of every 5 or 6 files transferred being corrupted (mismatched MD5). This only appears to happen when transferring files 4GB+ in size, and when destination is NTFS connected via USB interface. This is not me being afraid of something that *might* happen. This *IS ...

Zenju, thanks again for the response.
I'm afraid you may be downplaying the specific problem, however. I'm aware that there are many places data can be corrupted, but I'm not talking about random data corruption. This is specific to Windows 7 x64 and USB connected drives, and can easily be ...

Just to clarify, you're saying if this bug happens in command line xcopy and windows explorer copy, it *wouldn't* in FFS? I saw mention of some rudimentary verification in FFS that can be enabled via xml config? I might have to do that, however I understand it isn't MD5 or anything like that. As you ...

Zenju- thanks for the reply. Did you get a moment to look at that thread above? There are literally dozens of others that try to troubleshoot it and all end up not being able to verify a fix. As far being a windows explorer bug- they have confirmed it happens using the command line copy and even ...

Ok, this is an odd bug that I can't believe I only discovered last night. Apparently, Windows 7 x64 has a major bug that effects many (but not all) computers, when copying to an external USB connected drive.

https://social.technet.microsoft.com/Forums/windows/en-US/13a7426e-1a5d-41b0-9e16 ...