Grub doesn't see my slave drive
 

I'm trying to use GRUB to boot an operating system placed on my slave drive, but it doesn't see it. I tried using both the GRUB on Fedora Core 5 and a GRUB image on a floppy. Both of them saw the master hard drive (hd0), but they didn't see my slave drive (hd1).

Whenever I use grub inside of an already booted Linux, it recognizes hd0 and hd1 correctly, but I don't know how to make it actually bootstrap the Linux I'm trying to boot after I've done the root, kernel and initrd commands.

Basically, my two questions are:

1. Is there a command in GRUB that will let me find the drive it's not finding?
2. How can I use grub within an already booted Linux to boot another operating system?

Thanks!

Nevermind, I had to reconfigure my BIOS. I was switching off that drive in the BIOS to keep it from booting that instead of my master drive. I switched both drives on in the BIOS, and it works now.

I don't think you can do this. It IS possible to write a script that modifies the grub config file (menu.lst, typically) to set the default OS, then issue reboot command. Thus, with one click, you could re-boot into the OS of choice