February 2nd, 2013, 03:32 PM
Join Date: Aug 2010
Location: Dimension Jumping
Device(s): HTC One (S-Off),
HTC Desire (retired)
Carrier: Orange UK
Thanked 4,210 Times in 3,085 Posts
Hi miserego, and welcome to AF,
If you tell us exactly which phone model you have we can move this to the best forum to get expert help.
It won't boot because system is where the ROM is stored, so you have no ROM on the phone.
You talk about Odin but also say you have an LG, - I believe Odin is for Samsung only, so don't think that will help.
If you already have the CM9 ROM zip file on your sd card, can't you just boot into CWM and install it from there? If you haven't, you can mount the sd card over usb from CWM (there's a mounts and storage menu) and copy the ROM zip over from a computer , then toggle usb storage off and install the zip. On my phone that's what I'd do in this situation, but I've never used a LG so don't know whether there are any subtleties with your model.
Edit: sorry, read again and see that you can't get into CWM. This needs someone who knows your phone model.