Henri Derksen wrote
>JP> For SDcards it is hard to tell, no LED, but I think the internal
>JP> controller on the cards / sticks does some housekeeping
>JP> even after the copy has finished.
>JP> So maybe it is better to leave it in for a minute or so longer.
>***** Eind of citation.
>
>So you know very well how important it is to work safely,
>as you type "sync" 3 times, and wait minutes after copying ;-).
>In that case give the right syntax to newbe's please.
>And donot "attack" me for important safety parameters, such as sync.

No, the ONLY way to know if a copy was OK is to use 'diff' or in my case
dvdimagecmp
I do not 'always' use sync 3 times, it is an old Unix thing.



>Note; we are now on Raspbian Stretch in stead of Jessie or Wheezy
>
>JP> I _do_ use dvdimagecmp to test if the image is the same as the card:
>JP> http://panteltje.com/panteltje/dvd/dvdimagecmp-0.3.tgz
>
>Sorry but I do not use a CDVD-drive at my Pi's.

The instructions I quoted and gave are for a harddisk copy,
and I clearly stated 'on a Linux PC'.


>JP> dvdimagecmp -a /dev/sdb -b the_image_i_made
>
>That is not a standard command available at Pi Linux versions I think.
>But thanks for availability via your site.
>
>JP> will report errors and progress,
>JP> better than 'diff'.
>
>Why better?, please define that with reasons, motivation etc..
>Better without reason is not a good argument.

Read it again.

--- SoupGate-Win32 v1.05