I've come to the conclusion that the from scratch install GUI will not
allow one to put a RAID on top of a RAID, even though the OS will allow it.  I
am therefore trying to work around this problem.
     I've got all 4 of my /boot partitions mirrored fine and I've got my 2
sets of mirrored partitions set up and `formatted' as RAID partitions.  I took
3 of my 4 swap partitions and striped them together as the / partition and did
a partial install of SL 3.0.2.  After booting up, I finish the RAID 10 (1+0),
create a file system on the device, and copy everything from the existing / to
the new RAID 10 one.  All this seems to work fine.  My problem is now how do I
switch the system from using the old / partition to the new one.
     In my haste to get things up and running, I may have missed something
simple and obvious, but I don't know what.  I've double checked that the
/etc/raidtab file on the new root partition is set correctly and I edited the
/boot/grub/grub.conf file so that `root=' points to the new /dev/md* device
that is the new root device.  When I reboot, the system hangs.  I must be
missing something obviously wrong here, but do not know what.  Can anyone give
me any pointers on what I'm doing wrong?  All help would be greatly
appreciated.  Thanks.