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Comment by cube00 | Hacker News Reader

This is confusing, it sounds like the RAW files themselves are corrupt so why bring any discussion of the Lightroom catalog into it?

Having said that people need to take care backing up their catalog because without that single catalog file you will lose decades of photo editing work in Lightroom.

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Yes, Lightroom has nothing to do with it. Seems like that’s simply the app that the author is using to view the files.

The title of this post should be changed to “file transfers from MacOS to Synology NAS causes file corruption”

It’s a known issue with no fix at the moment.

Known to whom? And do you have a reference to this information from either Apple or Synology?

You can also set Lightroom to write sidecar xmp files, which means every edited raw file will also have its own copy of the edits kept alongside it.

Coupled with using a good directory structure, that significantly lessens the impact of losing a catalog file.

Given how photos are "imported" into a Lightroom Catalog, some might think thats where they live... On a Mac, IIRC (its been a while since i used LR on a Mac) if you look at your catalog, its a single large "file" with all the meta data, edits, originals, etc, in one place...

This isn't really correct, the original image is always stored in the original place or the place you select to copy it too. That's why I also think the title is a bit miss leading, cause it was never the Lightroom catalog that was the issue, it was the RAW-images them self.

The catalog only contains the edits and changes to an image, it doesn't actually contain any images.

Lightroom can move or copy images to a new folder for you, but they're still just normal image files you can open with any supported software.

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