USB booting :: how to install on a USB HDD please?

Hi all,

I've got DSL bootable on a USB memory stick, however I'd like to install it on a USB HDD (uncompressed) if this is possible.

However when I connect my USB HDD DSL does not appear to detect the device (it's a generic case with SATA HDD, it works fine under Windows and also the Wii can see it to display photos etc.).  Does anyone have any suggestions on how I can try to force detection and installation please?

thanks in advance.

original here.