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In a post between "Dave Drum : August Abolins", on 9/12/2019 3:49 AM

 > I've no direct experience with degradation of SD cards - micro or std.
>
> But, I've had lost data/corrupted data on nearly everything else. Heat,
> bright light and cosmic rays seem to play some role. I've even had CDs
> and DVDs get trashy parts on me.

Are those your own burned CDs or DVDs?   My commercial CD collection from when
I first started buying those things in the 80s, still play beautifully.


> Having been bitten more than once I've adopted a practice of copying
> "important" files onto a separate device/medium then use a file comparison
> utility to check the result.

copy /v  ..very handy.

But doesn't the traditional gui drag-drop process automatically do a verify?


> .. Amiga made it possible. Commodore made it dead.

Which reminds me, I have a wonderful Commodore calculator, SR-9190R.  I got it
at a Consumer's Distibuting in the late 70's for about $50, new.  It 
essentially replaced my $400+ Texas Instruments programmable calculator just a
few short years prior to that.  But the Commodore has the best keys and is the
only one that still works!

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