[GTALUG] War Story: Asus UX305ca SSD failures

[James Knott]

On 2019-08-09 12:47 PM, Russell Reiter wrote:
> There is a possibility that keeping your photos in raw form will
> protect from major copy errors, but in all situations of moving bits
> in a data stream, there is the possibility of transient error. Jpg was
> considered lossy as it could not fully recreate the the full raw data.
> 25mb or more  of raw image data per image is, or was, a hefty size to
> move across the bus in early days, much less across the internet.  Now
> we have so called lossless JPEG, however its accuracy is based on
> predictive sampling rather than a pure collection of bits per pixel.

Jpegs are not copies.  They are manipulated to save space.  When you
copy a file, that is do not modify it, then the copy should be an exact
replica.  If you're really worried, you can use shasum etc. to ensure
integrity of the copy.