Raspberry Pi setup/howto.



Download an image from here (or elsewhere):
	
	http://www.raspberrypi.org/downloads


Find the offsets:

$ file *wheezy-raspbian.img 
2013-02-09-wheezy-raspbian.img: x86 boot sector; 
partition 1: ID=0xc, starthead 130, startsector 8192, 114688 sectors; 
partition 2: ID=0x83, starthead 165, startsector 122880, 3665920 sectors, code offset 0xb8


Or run fdisk (as root):

# fdisk -lu *wheezy-raspbian.img
You must set cylinders.
You can do this from the extra functions menu.

Disk 2013-02-09-wheezy-raspbian.img: 0 MB, 0 bytes
255 heads, 63 sectors/track, 0 cylinders, total 0 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00014d34

                         Device Boot      Start         End      Blocks   Id  System
2013-02-09-wheezy-raspbian.img1            8192      122879       57344    c  W95 FAT32 (LBA)
Partition 1 does not end on cylinder boundary.
2013-02-09-wheezy-raspbian.img2          122880     3788799     1832960   83  Linux
Partition 2 does not end on cylinder boundary.


The offset in bytes is found by multiplying each start sector by 512.

First partition has an offset of:	8192 x 512 =  4194304 bytes
Second partition has an offset of:    122880 x 512 = 62914560 bytes


To mount the partitions:


# mount -t vfat -o loop,offset=4194304 2013-02-09-wheezy-raspbian.img /mnt

# mount -t ext4 -o loop,offset=62914560 2013-02-09-wheezy-raspbian.img /mnt


In the second ext4 partition, enable wifi.


The default /etc/network/interfaces should look like this:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp



Option #2

Edit /etc/network/interfaces to this:

auto lo eth0 wlan0

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet dhcp
    wpa-ssid mynetworkname
    wpa-psk mysecretpassphrase





Option #1

Change it to this:

auto lo   
iface lo inet loopback 
iface eth0 inet dhcp   

allow-hotplug wlan0 
auto wlan0 
iface wlan0 inet dhcp 
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf 


Edit the WPA configuration in /etc/wpa_supplicant/wpa_supplicant.conf 

network={ 
ssid="SSID-GOES-HERE"
proto=RSN 
key_mgmt=WPA-PSK 
pairwise=CCMP TKIP 
group=CCMP TKIP 
psk="WIFI-PASSWORD-GOES-HERE"
} 





Might need this:

# aptitude update
# aptitude install wpasupplicant





Unmount the img:

# umount /dev/loop0


Write the img to your SD card:

dd bs=4M if=2013-02-09-wheezy-raspbian.img of=/dev/sdc


Power on the pi & ssh into it.

Default login: 
Username: pi 
Password: raspberry