hey! hey! hey!
you guys .... the problem is not with the hdx1 on either disk
the bios looks for a boot loader on the mbr (or master boot record) of the first hard drive it comes to, unless otherwise set in the bios.
you need to have grub install itself on the mbr of hda1 or, you need to set the bios to boot from the second hard drive.
this has nothing to do with your boot partition!
cheers!

oh ya and don't forget, gentoo rocks!
there is no crazy, only violet and non violet..