Dual boot from BIOS Win7 & Karmic

[Indifferent]

I would like to install grub or grub2 to my laptop's secondary hard drive (hd1 (sdb)) where Karmic is installed and be able to select the boot device from the BIOS Boot Menu <F12> that is available. During the installation of Karmic I did not select hd1 for Grub and it is now installed on hd0 (sda) where Win7 is installed.

I can reinstall the Win7 loader for sda, but I want to make sure that I can, and do, install grub to sdb properly.

If it helps: 2 x 500gb SATA HDD : Win7 64-bit (sda3) / Karmic PAE Kernel (sdb3) & ext4
fdisk info:


Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x46ea46e9

Device Boot Start End Blocks Id System
/dev/sda1 1 1530 12288000 27 Unknown
/dev/sda2 * 1530 1543 102400 7 HPFS/NTFS
/dev/sda3 1543 60802 475994136 7 HPFS/NTFS

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00012fcb

Device Boot Start End Blocks Id System
/dev/sdb1 1 522 4192933+ 82 Linux swap / Solaris
/dev/sdb2 6375 60801 437184877+ 7 HPFS/NTFS
/dev/sdb3 523 6374 47006190 83 Linux

(not sure why the NTFS partition is shown as sdb2, it was created after the swap & ext4 partitions using gParted)
Any assistance is greatly appreciated.