Rpi2 i2C0 - Error: Could not open file `/dev/i2c-0' or `/dev - Raspberry Pi Forums

hi,

i'm trying i2c.0 working on raspberry pi2.
i2c.1 working fine. have attached i2c devices , found 'i2cdetect -y 1'
need 2 i2c buses need i2c.0 working

'i2cdetect -y 0' "error: not open file `/dev/i2c-0' or `/dev/i2c/0': no such file or directory"

can me out here?
*** update: solved ***
after reading "http://www.raspberrypi.org/documentatio ... ce-tree.md"
in /boot/config.txt put # in line "#device_tree="
(i did other trials, pretty sure fixed it)
***

have found few posts solutions i2c nothing helping me.
far, have done:
- apt-get update & upgrade
- raspi-config: enables i2c , spi
- apt-get install i2c-tools libi2c-dev
- installed wiringpi
- appended /boot/config.txt:dtparam=i2c_arm=on
dtparam=i2c0=on
dtparam=i2c1=on
dtparam=spi=on
dtparam=i2c_vc=on
-appended /boot/cmdline.txt:
bcm2708.vc_i2c_override=1
- /etc/modprobe.d/raspi-blacklist.conf empty
- in /etc/modules have:
snd-bcm2835
i2c-dev

following output 'gpio read all':
gpio readall

code: select all

+-----+-----+---------+------+---+---pi 2---+---+------+---------+-----+-----+  | bcm | wpi |   name  | mode | v | physical | v | mode | name    | wpi | bcm |  +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+  |     |     |    3.3v |      |   |  1 || 2  |   |      | 5v      |     |     |  |   2 |   8 |   sda.1 | alt0 | 1 |  3 || 4  |   |      | 5v      |     |     |  |   3 |   9 |   scl.1 | alt0 | 1 |  5 || 6  |   |      | 0v      |     |     |  |   4 |   7 | gpio. 7 |   in | 1 |  7 || 8  | 1 | alt0 | txd     | 15  | 14  |  |     |     |      0v |      |   |  9 || 10 | 1 | alt0 | rxd     | 16  | 15  |  |  17 |   0 | gpio. 0 |   in | 0 | 11 || 12 | 0 | in   | gpio. 1 | 1   | 18  |  |  27 |   2 | gpio. 2 |   in | 0 | 13 || 14 |   |      | 0v      |     |     |  |  22 |   3 | gpio. 3 |   in | 0 | 15 || 16 | 0 | in   | gpio. 4 | 4   | 23  |  |     |     |    3.3v |      |   | 17 || 18 | 0 | in   | gpio. 5 | 5   | 24  |  |  10 |  12 |    mosi | alt0 | 0 | 19 || 20 |   |      | 0v      |     |     |  |   9 |  13 |    miso | alt0 | 0 | 21 || 22 | 0 | in   | gpio. 6 | 6   | 25  |  |  11 |  14 |    sclk | alt0 | 0 | 23 || 24 | 1 | alt0 | ce0     | 10  | 8   |  |     |     |      0v |      |   | 25 || 26 | 1 | alt0 | ce1     | 11  | 7   |  |   0 |  30 |   sda.0 |   in | 1 | 27 || 28 | 1 | in   | scl.0   | 31  | 1   |  |   5 |  21 | gpio.21 |   in | 1 | 29 || 30 |   |      | 0v      |     |     |  |   6 |  22 | gpio.22 |   in | 1 | 31 || 32 | 0 | in   | gpio.26 | 26  | 12  |  |  13 |  23 | gpio.23 |   in | 0 | 33 || 34 |   |      | 0v      |     |     |  |  19 |  24 | gpio.24 |   in | 0 | 35 || 36 | 0 | in   | gpio.27 | 27  | 16  |  |  26 |  25 | gpio.25 |   in | 0 | 37 || 38 | 0 | in   | gpio.28 | 28  | 20  |  |     |     |      0v |      |   | 39 || 40 | 0 | in   | gpio.29 | 29  | 21  |  +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+  | bcm | wpi |   name  | mode | v | physical | v | mode | name    | wpi | bcm |  +-----+-----+---------+------+---+---pi 2---+---+------+---------+-----+-----+

thanks saved life!

raspberrypi