Description of problem:
There is an undocumented option(BZ 164787) called "ignoredisk --drives=sdb,sdc"
that can be passed in a KS file to ignore everything regarding the concerned
devices, which works well, excepted regarding the --initlabel option which tries
to initialize all drives visible to the machine.

Version-Release number of selected component (if applicable):
anaconda-10.1.1.37

How reproducible:
create a KS file with the options indicated above in it, and try to install
RHEL4 U3 on a brand new harddisk. The page regarding the initialization of the
drives which should be ignored come up for the ignored listed devices, but
should not.

Additional info:
It seems that the openDevices function in partedUtils.py is responsible of this
issue:
    def openDevices (self, intf = None, initAll = 0,
                     zeroMbr = 0, clearDevs = []):
        """Open the disks on the system and skip unopenable devices."""
        if self.disks:
            return
        for drive in self.driveList ():
            if drive in DiskSet.skippedDisks and not initAll:
                continue
            deviceFile = isys.makeDevInode(drive)


I replaced the 3 last lines above with:
           if drive in DiskSet.skippedDisks and initAll:
                DiskSet.skippedDisks.append(drive)
                continue
            deviceFile = isys.makeDevInode(drive)

It seems to fix the problem, but maybe I am wrong somewhere.