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I assume you (your unix user) owns the device or at least has sufficient permissions on it (for example if you are root). If the command lsblk -o NAME,FSTYPE,MOUNTPOINT,PARTLABEL,SIZE,RO shows your device as read only (RO=1), you can try to execute hdparam -r 0 /dev/sdb5. This modifies the read only flag in the kernel (according to man hdparam). ...


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The image file will already contain partitions and a boot sector therefore you cannot copy it to a partition. Instead you need to copy the image to the whole SD Card: sudo dd if=Cubian-desktop-x1-a10-hdmi.img of=/dev/mmcblk0 bs=4096; sync Note the lack of p1 at the end of the output file. You could probably increase the block size too - try bs=1M ...



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