Description of problem:
installing f20 x64 onto dell studio notebook extended partition.
booted from liveusb because wireless drivers had already been added to the liveusb.
I presumed the fedora DVD would be mounted automatically during the installation process,
but that was not the case.

Version-Release number of selected component:
anaconda-20.25.15-1.fc20.x86_64

The following was filed automatically by anaconda:
anaconda 20.25.15-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/subprocess.py", line 1308, in _execute_child
    raise child_exception
  File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/iutil.py", line 81, in _run_program
    preexec_fn=chroot, cwd=root, env=env)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/iutil.py", line 116, in execWithRedirect
    return _run_program(argv, stdin=stdin, stdout=stdout, root=root, env_prune=env_prune)[0]
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/livepayload.py", line 161, in postInstall
    iutil.execWithRedirect("systemd-machine-id-setup", [], root=ROOT_PATH)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 168, in doInstall
    payload.postInstall()
  File "/usr/lib64/python2.7/threading.py", line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 192, in run
    threading.Thread.run(self, *args, **kwargs)
OSError: [Errno 2] No such file or directory

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-base
cmdline_file:   initrd=initrd0.img root=live:CDLABEL=LIVE rootfstype=vfat rw rd.live.image rd.live.overlay=LABEL=LIVE quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0  BOOT_IMAGE=vmlinuz0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.11.10-301.fc20.x86_64
other involved packages: python-libs-2.7.5-9.fc20.x86_64
product:        Fedora
release:        Fedora release 20 (Heisenbug)
type:           anaconda
version:        20