Installation

Downloaded and used physdiskwrite to write net45xx-1.235 to SanDisk ultra II, 512 CF, installed into 4521, used null modem cable, using hyperterminal I get message  POST: 0123456789. How can I tell if mOnOwall is on the CF?  Any suggestions?
Thank You

I figured it out by testing it with different power supplies and then found a power supply that it worked with.