Sakos, I have taken the SD card and WiFi dongle from my RP2 to get a new Pi Zero up and running without problem. I would note that the RP2 installation was a very recent build from the latest NOOBs and OS github. As such it was based on Jessie version of Debian.
Following was from Adafruit site (https://learn.adafruit.com/introducing-the-raspberry-pi-zero/setting-up-your-sd-card):
Raspbian Wheezy 5-15 or earlier do not support the Zero! Try Jessie instead
Hope that helps, Pete