force system boot up from disk2

[bbaa aaa]

We have DELL server with 4 sSCSI disks in it.  The disk 1 is O.S. and Disk2 
is "DD" from disk1 and bootable.  Every time is disk 1 bad I need move disk 
2 to disk1 to boot it up.  Does there has way I can put bootable diskette 
and force system boot from disk2?

Thanks.

_________________________________________________________________
Help STOP SPAM with the new MSN 8 and get 2 months FREE*  
http://join.msn.com/?page=features/junkmail