Description of problem:
Anaconda appends "rhgb quiet" to the bootloader's kernel arguments.
On s390x, there is not graphical console. A console of type line mode is most common. Even more so, it's not uncommon to do system automation based on the guest OS's console output.

Version-Release number of selected component (if applicable):
anaconda-11.5.0.51-1.fc11.s390x

How reproducible:
Install on s390x and accept the reboot after install phase 1.

Actual results:
With "rhgb quiet" the user won't see any progress whatsoever on booting Fedora.

Expected results:
Full output of kernel boot messages on the default console.