FreeFileSync Forum

And a content compare (VerifyCopiedFiles) does?

I would be very surprised if it did.
(I have never heard of a comparison program that does such?)

No way.
It would be a separate operation - and it wouldn't know what to compare: the meta-data depends on the file type, the program that wrote it ...

FFS frequently reports files as different, but a SHA256 comparison shows that they are identical. This could not happen if there were ANY differences.

That is very strange, & unexpected.
Is there anything, something a wee bit smaller then 80 GB, that this can be duplicated on?


Well in the ...

If w want to restore a backup of a file what we are interested in is indeed the actual binary content.
It doesn't matter when the file was written, by whom, when, its permissions - or any other properties.
If needed we are going to want to restore its content to use.

If you compare the content of a ...

FreeFileSync (FFS) does not use hashes.
If you Compare by file content, FFS simply compares the full content of the left- and right-side file; the best guarantee that both files are identical.


It is not a guarantee at all: FFS frequently reports files as different, but a SHA256 comparison shows ...