Description of problem:
It happened immediately after entering the initial language selection screen without any intervention from my side.

Version-Release number of selected component:
anaconda-22.20.9-1

The following was filed automatically by anaconda:
anaconda 22.20.9-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 951, in addUdevPartitionDevice
    raise UnusableConfigurationError(msg)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 1225, in addUdevDevice
    device = self.addUdevPartitionDevice(info)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 2194, in _populate
    self.addUdevDevice(dev)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 2128, in populate
    self._populate()
  File "/usr/lib/python2.7/site-packages/blivet/blivet.py", line 277, in reset
    self.devicetree.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python2.7/site-packages/blivet/osinstall.py", line 1117, in storageInitialize
    storage.reset()
  File "/usr/lib64/python2.7/threading.py", line 766, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 244, in run
    threading.Thread.run(self, *args, **kwargs)
UnusableConfigurationError: failed to scan disk sdg

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python2  /sbin/anaconda
cmdline_file:   ro vnc
dnf.rpm.log:    Apr 28 12:04:07 INFO --- logging initialized ---
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.0.0-1.fc22.ppc64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        22