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I am trying to clone a persistent Lubuntu 16.10 installation on a 16Gb Sandisk USB memory stick to a Sandisk 16Gb Micro SD card. I did this:

dd if=/dev/sdb of=sdimage.img bs=4M
dd if=sdimage.img of=/dev/sdc bs=4M

Where /dev/sdb was the USB memory stick and /dev/sdc was the target Micro SD card. After several hours the job ended with:

dd: error writing /dev/sdc: no space left on device
3799+0 records in
3798+0 records out
15931539456 bytes (16GB, 15 GiB) copied, 10604 s, 1.5 MB/s

So it seems that the real capacity of the Micro SD card is smaller than that of the USB memory stick with the same nominal capacity. Can anyone recommend a way of cloning the O/S from the USB stick to the SD card which will work with the slightly "smaller" SD card?

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The best way to do this is to use GParted to shrink the partitions on the sdimage.img file.

  1. Do sudo losetup /dev/loop0 sdimage.img
  2. sudo gparted /dev/loop0 (Install GParted if you haven't already)
  3. Edit the last partition to be slightly smaller.

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