Flash using bmaptool#

Alternatively, you can use bmaptool which will greatly reduce the flashing time by only writing relevant blocks

  • non-graphical image
  • graphical image
sudo bmaptool copy simplecore-simpleswitch-os-image.wic /dev/mmcblkX

sudo bmaptool copy simplecore-simpleswitch-os-weston-image.wic /dev/mmcblkX

Select the correct device

It is important to specify the correct device.

Here in our example we used /dev/mmcblkX, but depending on your distro and a few other factors the name can be different for your setup.

The easiest way to find out is to, remove the SDCard and then run

ls -l /dev > /tmp/dev-list1

insert the SDCard again and run

ls -l /dev > /tmp/dev-list2
diff /tmp/dev-list1 /tmp/dev-list2

> brw-rw----  1 root disk      8,    16 May 21 09:14 /dev/mmcblk2

so in the correct device to use is /dev/mmcblk2