How is the metadata stored for image files, and what is involved in recovering it after drive failure?
Okay, I would like to revisit a question I asked about 6 weeks ago. I didn't get the response I wanted (half-joking!).
A summary of the question (here
) would run something like this:
Files which "disappeared" from WD external hard drive that was not ejected (mounted) before PowerBook crashed are recoverable with data recovery software, but metadata is not. Can anything be done to retrieve the metadata?
I would now add: Or can anybody speak to the idea that the metadata is likely still there but somehow hidden/inaccessible?
Let's, for the time being, assume I'm not so interested in the iTunes files (mostly true -- I'll get over it), and that it's really photos-with-correct-metadata-attached that I'm agonizing about.
I tried DiscWarrior and it did the same as Filesalvage -- it found the files easily enough, but came back without the original metadata.
I tried finding something like chkdsk for Mac, but came up empty -- it's been some weeks so I can't remember details, but I do remember it seemed to be a deadend street. I did try Disk Utility, but wasn't sure what I was doing and so don't know if I have exhausted its possibilities. I was able to connect to a friend's PC, and run chkdsk. I ran it with both "Automatically fix file system errors" and "Scan for and attempt recovery of bad sectors" selected. This took a few hours, but when it was done, all it said was that it was done, with a choice to click "OK". I was expecting it to come back with some data or report, but there was none. When I plugged the drive into my Mac, there was no change. Perhaps I need to run the data recovery again?
Finally, I still would love to know WHY and/or HOW this can happen "in this day and age" (as per my last post to the original question). A) I'd be very interested to know what is going on in the mounting process (or lack thereof) that would cause a failure like this (or, I guess more specifically, why would the metadata be unrecoverable, but the images be easily recovered -- is the metadata stored separately from the actual file?). And B) I assume there must be something I'm not seeing here as to why this is still even a possibility, since it should have been one of the first things to be designed out of newer drives. I guess I feel that having a better understanding of the above might help me to "come to terms" with what has happened and move on. Right now I can't let go of the idea that the metadata is there, but I just can't get to it somehow.
* Final note: the drive appears
to be otherwise functioning fine. I haven't saved anything to it for fear of overwriting, but I am fairly (foolishly?) confident that I will be able to use the drive normally once I have either retrieved the data I want or given up.
Any help with any of the above would be most appreciated, including suggestions for what other forums I should try taking my question(s) to.
Thanks in advance.