Nexcom EBC-3A1 Series, User Manual

Page: 64 / 67

64
sudo dd bs=1m if=2015-02-16-raspbian-wheezy.img of=/dev/rdisk3
If the above command reports an error (
dd: bs: illegal numeric value
), please change
bs=1m
to
bs=1M
.
If the above command reports an error
dd: /dev/rdisk3: Permission denied
then that is because the
partition table of the SD card is being protected against being overwritten by MacOS. Erase the SD
card's partition table using this command:
sudo diskutil partitionDisk /dev/disk3 1 MBR "Free Space" "%noformat%" 100%
That command will also set the permissions on the device to allow writing. Now try the
dd
command
again.
Note that
dd
will not feedback any information until there is an error or it is finished; information will
be shown and the disk will re-mount when complete. However if you wish to view the progress you can
use 'ctrl-T'; this generates SIGINFO, the status argument of your tty, and will display information on the
process.
•
After the
dd
command finishes, eject the card:
sudo diskutil eject /dev/rdisk3
(Or: open Disk Utility and eject the SD card)