Monday, May 20, 2013

Installing Raspberry Pi on SD card on mac or linux

If you're on mac or linux, installing the raspberry pi operating system on a sd card is quick and easy. Here's the instructions for doing it using the tool dd.

Warning: with one wrong typo you can wipe out your entire hard drive with the command dd. Be very careful with the dd step that you're pointing it at your sd card.

We'll be doing this all in the terminal. Open up your terminal by typing "command + space" then typing in terminal if you're on a mac. If you're using ubuntu it's "ctrl + t".

Download the newest raspberry pi image and unzip it

 $ cd ~/Downloads   
 $ wget .   
 $ unzip  

Find out what the device name is, and then unmount it. Ignore the "s1" part after the device name if you're on a mac. In this case it's "/dev/disk1".

  $ df -lh    
   Filesystem Size Used Avail Capacity iused ifree %iused Mounted on    
   /dev/disk0s2 233Gi 97Gi 135Gi 42% 25586022 35483418 42% /    
   /dev/disk1s1 56Mi 19Mi 37Mi 34% 512 0 100% /Volumes/Untitled    
  $ diskutil umount /Volumes/Untitled   

Send the data using the dd command.

WARNING: Be very careful with this step. The "of=" MUST be the device name for the sd card. Measure twice and cut once. There's a reason sysadmins sometimes refer to dd as "disk destroyer."

$ sudo dd if=2013-02-09-wheezy-raspbian.img of=/dev/disk1 bs=1  

You can check the progressing by sending a "SIGINFO" (ctrl + t):

load: 0.85 cmd: dd 24671 uninterruptible 31.47u 174.72s    
  112168961+0 records in    
  112168960+0 records out    
  112168960 bytes transferred in 410.701456 secs (273116 bytes/sec)

That's it! You're done. 

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