I’ve been trying to upgrade my development virtual machine to SharePoint 2007 SP2 today. No problems, except for the tiny detail….
The upgrade couldn’t find HOSTS file.
After some googling I’ve found the culprit: the MOSS Search. It changes some entries in hosts file but it deletes the file and recreates it. If your service account is not an administrator, bad news…the file can’t be created again.
More information on this bug by Jeremy Jameson: http://blogs.msdn.com/jjameson/archive/2007/05/05/the-case-of-the-disappearing-hosts-file.aspx
After this minor glitch, now I can see that the version number is updated well:
Of course, I run the preupgrade check operation to see if my developer machine would be ported well to SharePoint 2010:
More explanation on preupgrade operation by Jie Li: http://blogs.msdn.com/opal/archive/2009/05/12/upgrade-checker-in-sp2-behind-the-scene.aspx