Yes, this happened to me when I first installed my new SAM with the accompanying 4.1
My experience with an AmigaOne was good assistance here.
I changed the booting value in 2 of the menus I believe but 1 is probably the most important.
also, once your workbench appears please enter a shell and type:
nvsetvar sii3114ide_xfer G00G
then reset immediately
This will prep your devices attached.
If you like and you know where your drives are you can set it to GOOG
which on the SAM would be set best udma mode for unit 0 and best udma mode for unit 3
Harddrive and DVDRW respectively
mine is set to GGOG since I have two harddrives attached.
Hope that doesn't confuse you
p.s. sorry if you don't own a SAM but are using something else... sii3114ide in the above command will have to be replaced with your equvialent