== Writing SD Cards: Linux ==
Every Linux distro should include dd. Run {{{which dd}}} to confirm you have it installed.

'''Finding the SD card descriptor:'''[[BR]]
 1. Insert the SD card
 1. In a terminal run {{{fdisk -l}}}. Depending on your system, you may need to run this as root ({{{sudo fdisk -l}}}). Look for the SD card in the list of disks. On an Ubuntu 12.04 system with one hard drive, the output is:
{{{
}}}
 2. In this example, the SD card device descriptor is {{{/dev/disk1}}}. The actual descriptor will differ on other machines with different disk configurations, but should take the form {{{/dev/diskX}}}.

'''Copying the .bin file:'''[[BR]]
 1. Unmount ('''not''' eject) the drive using this command (replacing {{{X}}} with your actual SD descriptor):
{{{
diskutil unmountDisk /dev/diskX
}}}
 1. Run this command, replacing the last three arguments with the correct values:
{{{
dd bs=512 seek=<N> if=<yourFile.bin> of=</dev/diskX>
}}}
  1. ''<N>'': depends on the target slot number; use (131072 + slotNum*32768). More details [wiki:..#Copying.binFilesSDCards here].
  1. ''<yourFile.bin>'': the binary FPGA configuration file
  1. ''</dev/diskX>'': device descriptor for the SD card
 1. If successful, dd should report the following (the time/throughput values will differ):
{{{
18032+1 records in
18032+1 records out
9232444 bytes transferred in 8.503631 secs (1085706 bytes/sec)
}}}
 1. Repeat for additional .bin config files in additional slots if needed.
 1. Eject the SD card in the Finder (if it's mounted).