HD Footage in Blu-Ray format on a normal DVD Disc

Hi Guys,

I think my last post got rejected as I wasn't using a screen name!

I want to send out an HD preview to clients along with their SD DVD's and I can render and burn the work area in premiere fine.

If I click 'Export->Adobe Encore' I can select the Blu-Ray as the export option but do I need a Blu-Ray disc in the drive to burn it as it seems to not let me do it without one, and presumably it is just the data on a disc type as I cant afford $16 per disc on a speculative HD purchase..I can afford 50c for a DVD and a short watermarked render..!!

Many thanks..Jon