The BIOS determines which disk (the first) will be chosen to boot from.
I have no problems configuring the boot order in the BIOS.
I must have the MBR on /dev/hdc (which is being removed). The /boot partition is on /dev/sda (where I want to move MBR).
To make a plain bootsector copy: dd if=/dev/sda of=/dev/sdb bs=512 count=1
sda = old MBR source and sdb = new MBR source, I assume? So, in my instance, I'm going to want to run it in this syntax:
dd if=/dev/hdc of=/dev/sda bs=512 count=1
I'm assuming the first 512 bytes are allocated purely for MBR and won't hold any data that could be overwritten? Would that be true?
grub root (hd0,1) # press tab for command completion setup (hd0)
Do I need to move the MBR, remove the old drive, and reboot from a LiveCD in order to have a reconfigure of grub correctly see which drive it should find to boot from? Or can I do this before taking the system down for the drive removal?
Thanks, Scott