i did a hdd change in my modded xbox and i put in evox slayers disc, and i rebuild new hdd, it works fine and copies the files to the hdd. Then when i rebooted the modded xbox, a error code 13 pops up... is there a way to fix this problem? thz

Couple of questions, are you using a modchip or softmod?? Error 13 is a dashboard failure of some sort. So maybe the paths os something is off somewhere.

a mod chip

Can you tell if your chips bios is loading? Also, you may need to update the dash in your slayers install. If it's an older version and your trying to install on a v 1.6 xbox, this can cause the same symptoms.

how can i tell which version of the xbox i have?

Try here (http://www.llamma.com/xbox/Repairs/determine_version_of_xbox.htm) although you can't always be 100% on some versions with out actually taking the xbox apart.

download the new evox and ftp it 2 ure pc worked 4 me