Originally Posted by tate1615
If someone has success booting off of the larger drive please share how it is accomplished.
I have a 4gb Eee 701, without the secondary drive, but I have booted from the SD card slot using an 8gb SD card. If you tap ESC when booting, you'll see the boot menu. On my Eee, there are settings in the BIOS for the boot order.
If that doesn't work, you should still be able to install GRUB on the MBR of the 4gb swap-partitioned disk. So you would in effect boot a copy of Linux located on your 16gb disk, using a bootloader on the mbr of your 4gb disk. This wouldn't affect the swap space, since the swap is just another partition, and there's no reason a bootloader needs to be located on the same disk it is loading its kernel & filesystems from.
However, my knowledge of grub installation and configuration doesn't extend as far as knowing exactly how to do this. Hopefully someone with more expertise can provide insight. Or, you could try googling for things like "multiboot grub" or "multiple disk grub".