The system is off when I swap drives. I do a full shut down, swap the drives then turn the computer back on. I have one computer that I have been doing some development on and trying to get this swappable hard drive issue resolved. I have a second computer where I am testing swapping the hard drives. Both systems are identical hardware. The system loads up just fine on the original computer that I loaded CentOS onto but when I try to move that hard drive to another computer that's when I have problems. I will post fstab for both systems when I get a chance.
The error message is as follows:
mount: could not find filesystem '/dev/root'
setuproot: moving /dev failed: No such file or directory
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
switchroot: mount failed: No such file or directory
Kernel panic - not synching: Attempted to kill init!