[CentOS] cleartpart in kickstart on CentOS 6

From: Kevin C <linux at tuxalafenetre.net>

> I use a kickstart file to install my operating systems. In the 
> kickstart file, I put the clearpart options to erase all my partition. 
> But the install failed because the partition aren't erased. Does someone 
> have the same issue ?


Which clearpart parameters do you use?
Something like that?
  clearpart --drives=sda --all
Personally I use a %pre script to manually wipe+partition+format...

JD