Problem creating slices or labels

Hi, I am using FBSD 5.2.1 release and I can't create slices or labels using sysinstall. When I boot from the instalation CD everything works fine. The message from sysinstal is ERROR: Unable to write data to disk ad0! I need to do this in a remote computer, so i can't boot from the CD. What am I

problem creating slices and labels

Hi, I am using FBSD 5.1 release and I can't create slices or labels using sysinstall. When I boot from the instalation CD everything works fine. The message from sysinstal is ERROR: Unable to write data to disk ad0! I need to do this in a remote computer, so i can't boot from the CD. What am I