I am trying to customize F21 ISO and have done some attempts but failed. Here are some details:

1. I replace some packages in "Packages" directory, then run "createrepo --update Packages", but it generated a new directory "repodata" under "Packages". Is that correct?

2. I update .treeinfo with newly calculated sha256sum value for repomd.xml.

When i installed with PXEboot, it gave following errors:

Starting package installation process

 

An unknown error has occured, look at the /tmp/anaconda-tb* file(s) for more details

 

===============================================================================

An unknown error has occurred

===============================================================================

anaconda 21.48.21-1 exception report

Traceback (most recent call first):

  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1112, in _selectYumGroup

    raise NoSuchGroup(groupid, required=required)

  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1227, in _applyYumSelections

    self._selectYumGroup("core")

  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1281, in checkSoftwareSelection

    self._applyYumSelections()

  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1370, in preInstall

    self.checkSoftwareSelection()

  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 223, in doInstall

    payload.preInstall(packages=packages, groups=payload.languageGroups())

  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 227, in run

    threading.Thread.run(self, *args, **kwargs)

NoSuchGroup: core

 

What do you want to do now?

1) Report Bug

2) Debug

3) Run shell

4) Quit

 

Please make your choice from above:

Who can give some suggestions? Thanks a lot!

Regards,

Brooks