HOWTO Install GRUB on several disks

This article was first written in November 2005 for the BeezNest technical
website (http://glasnost.beeznest.org/articles/297).
To install GRUB on several disks in the same machine (for example for Software RAID setups), just issue the following commands:
#grub --device-map=/boot/grub/device.map

>> root (hd0,0)
>> setup (hd0)
>> root (hd1,0)
>> setup (hd1)
>> quit