Can RAID driver be loaded from loader.conf?

[Toomas Aas]

Hello!

I'm preparing for a migration from single SATA disk attached to  
onboard SATA controller to 3ware 9750-4i RAID system. In preparation,  
while the system is still running on single disk, I downloaded the  
latest tws.ko driver from LSI website and added it to loader.conf:
tws_load="YES"

Further plan is to install the controller and new disks into the  
system alongside with the existing disk, create partitions on new disk  
and copy over all the contents using dump and tar. After that remove  
the existing single disk.

Is it safe to assume that the system will boot from RAID if RAID  
controller driver is loaded from loader.conf, or is it absolutely  
required to have the RAID driver statically built into the kernel?

-- 
Toomas Aas