Trying to boot debian installed on external HD through rEFIt

CannonBallGuy

Registered
Hi,

Installed debian onto an external HD and am now looking to use rEFIt to boot from it.
I'm on a 20" iMac with a 2GHz Intel Core Duo processor with OS 10.4.8.

When selecting the debian drive in the rEFIt menu I get the following documented error:
http://refit.sourceforge.net/doc/c4s1_notfound.html
However, I actually have a more recent version of the firmware, specifically IM41.0055.B08, but still get the error outlined at the link above.

Does anyone have some idea as to how I can fix this?

I've spoken to some computer geeks about this and one non-mac user suggested that I need to update my mac's Master Boot Record.
Is this likely and if so, how can I do it?

Thanks,
CBG.
 
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