He says the checksums are different but he doesn’t provide a diff to show how different. It could just be a single flipped bit or something. And that could happen in his own RAM/disk/CPU/router so seems premature to immediately blame Apple.
I ran both files through xxd then diffed them. I've literally changed every piece of hardware (at no small cost). "premature to immediately blame Apple" seems a bit off.
I tried running the file segments through a binary diff with Hex Fiend
As far as I can tell:
- 0x7800 bytes were replaced at file offset 0x00aa0000
- 0x2200 bytes were replaced at file offset 0x00aa8000
I can't tell if the replacement data came from a different part of the file, or somewhere totally different. Race condition somewhere sounds plausible.
This is the kind of stuff that makes me wish my Binary Diff Tool was already completed, but unfortunately I'm still working on it. Can't tell much what's wrong with the differences in the bytes without knowing what the structure behind it is.
No, it isn’t. The OP isn’t questioning whether the file changed, but asking what changed to the file, not what changed visibly.
The visible effect shown could be due to a change as small as a single bit flip. It also could be that large parts of the file got overwritten, or that it partially got zeroed. The exact kind of damage can help pinpoint the cause of the problem.
Yeah, I would have been interested in the diff too.
That said, the article does mention replacing basically all the hardware and still encountering the issue. FWIW, my personal experience with Apple software so far is that the usage expected for Average Joe is well tested and polished. But stepping outside of that, it's "Here be dragons" territory very quickly.
tenderlove|5 months ago
jjcob|5 months ago
As far as I can tell:
- 0x7800 bytes were replaced at file offset 0x00aa0000
- 0x2200 bytes were replaced at file offset 0x00aa8000
I can't tell if the replacement data came from a different part of the file, or somewhere totally different. Race condition somewhere sounds plausible.
daemin|5 months ago
daemin|5 months ago
Someone|5 months ago
The visible effect shown could be due to a change as small as a single bit flip. It also could be that large parts of the file got overwritten, or that it partially got zeroed. The exact kind of damage can help pinpoint the cause of the problem.
asksomeoneelse|5 months ago
That said, the article does mention replacing basically all the hardware and still encountering the issue. FWIW, my personal experience with Apple software so far is that the usage expected for Average Joe is well tested and polished. But stepping outside of that, it's "Here be dragons" territory very quickly.
jsw97|5 months ago
mobilemidget|5 months ago
Yes this argument is a bit unconvincing for me. Not saying Apple photos doesn't corrupt his files, but this is not real proper investigating either.