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@knc1 - when I do comment the debug flag the last one I do get is 'Executable dd found' so ...
@Yourcat - although that was my first impression after running series I 'm getting results as low as 68 and as high as hundreds blocks copied.
I had made small experiment - I did added echo to all the possible loop exits.
I write the following characters to console:
. - when the source and dest are identical
* - when they are initially differnt but after I do copy it over I do get correct readback
X - readback test failed
# - readback to ram failed
@ - copy incomplete
See the result of subsequent runs in attached file (with some lines removed as sometimes it hangs on readback just few blocks after start).
Scroll to the right and look for the pattern; where the previous run hangs dot ends and asterixes starts to pickup. But with every run the number of block written is shorter and shorter .....
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