I downloaded the iso file of Ubuntu 11.04 (32 Bit) from Ubuntu download page and followed the instruction of creating Bootable USB Memory Card. from the same download page (http://www.ubuntu.com/download/ubuntu/download).
But after 9th Step i.e. executing the following command
sudo dd if=/path/to/downloaded.img of=/dev/rdiskN bs=1m
Mac could not detect the USB Memory Card. I have to format the Memory Card again.
Here is a configuration I am trying 1. Mac OSX 10.6.8 2. Ubuntu 11.04 32 Bit iso installation (I Created dmg file as per steps)