Clone sd card (only usable part not all sd card)

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1

Hi, I want to backup my beglebone sd card
Is there any way to clone only the usable part and not an all bit copy
of 8Gbit sd card

Regards

2

If you want to take an image of the card without creating a huge file filled with mostly zeros, compress! The following should accomplish just that with significant space saving if the card’s device happens to be /dev/sdb. (I can’t test this at the moment, so I can’t confirm it works.)

sudo dd if=/dev/sdb | gzip > image.gz