drive change

[Ken Moffat]

I have a noisy hda drive, making a whining sound. I have set it to spin 
down in a few seconds to quite it, but would like to remove it. My linux 
install is on hdb, but the mbr is on hda, which contains an old windows 
install and some backup partitions. Can I remove hda, plug hdb in as 
hda, reinstall grub, edit /etc/fstab  and reboot? Or is this just 
wishful thinking? Or reinstall grub to hdb prior to switching drives? 
or.... ?  just swap and reinstall?

Ideas?

Ken