Install from DVD but get the preseed file from USB stick

[davidque]

Hi,

I would like to know if it is possible to install 10.04 server from DVD but get the preseed file from a USB stick? If so how?
I tried the following boot options but the installer keep ignore the preseed file:

url=file:///hd-media/./preseed.cfg

and

file=/hd-media/./ preseed.cfg

One guess is the URL is not correct as I get one USB mouse and one USB stick, so the URL is not simply /hd-media/ but I cannot find any document about what the correct URL should be.

Thanks