Hi, solr.
Finally, I was relieved from the ESENT mess after my windows.old folder disappeared!!
ESENT messages were telling me that the error occurs because of the type difference of the database.
Maybe while we have chance to reinstall old version of windows, new windows system was trying to access or check the windows.old folder.
Anyway, now after the windows.old folder had gone, I have seen none of ESENT messages so far.
Thank you.