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Thumbnails taking up a lot of disk space

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MrBiff:
These may start to help explain disk usage wrt. Snapshots:

https://eclecticlight.co/2022/02/10/managing-snapshots-how-to-stop-them-eating-free-space/
https://eclecticlight.co/2022/02/13/last-week-on-my-mac-still-struggling-with-snapshots/
https://eclecticlight.co/2022/07/23/explainer-the-arithmetic-of-snapshot-size/

and macOS + SSD TRIM:

https://eclecticlight.co/2023/04/14/will-your-new-ssd-support-trim-and-smart/

JimH:

--- Quote from: MrBiff on January 23, 2024, 08:50:23 pm ---These may start to help explain disk usage wrt. Snapshots:

https://eclecticlight.co/2022/02/10/managing-snapshots-how-to-stop-them-eating-free-space/
https://eclecticlight.co/2022/02/13/last-week-on-my-mac-still-struggling-with-snapshots/
https://eclecticlight.co/2022/07/23/explainer-the-arithmetic-of-snapshot-size/

and macOS + SSD TRIM:

https://eclecticlight.co/2023/04/14/will-your-new-ssd-support-trim-and-smart/

--- End quote ---
Wow!  Thanks!  Explains a lot and may account for many of the very strange Mac problems we've seen for a while.

Captain_Bitter:
The file that "bloats" is: Thumbnails (large).jmd. All the other files in the Thumbnails folder take up the same size as their bytes count.

Currently, my Thumbnails (large).jmd file shows as:  1,619,001,334 bytes (23.4GB on disk). The (medium) and (small) .jmd files are size-correct.

MacOS has corrected this on occasion, reducing the disk space to conform to the byte count. However, I have not been able to do anything on my part to initiate this. It just happens when it happens.

If anyone has any ideas on how I can initiate this 'size-correcting' process and recover the space myself -- instead of waiting for MacOS to do this -- I'd be most appreciative for suggestions.

Thanks, David 

MrBiff:
I'm afraid you're not going to like reading more about this...

https://eclecticlight.co/2023/04/17/the-finder-confuses-with-wildly-inaccurate-figures-for-available-space/

Captain_Bitter:
Happy Happy, Joy Joy. Thank you for the article. You are correct, not what I wanted to "hear," but I appreciate the knowledge transfer.

Further making this behavior strange, I went in to Systems Settings > General > Storage and, when I did a mouse-over on the System Storage, the extra storage taken up disappeared. You'd think this would be easy for Apple to implement, but apparently not.  ::)

Well, at least I got my space back.......for now.

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