HI DeepikaYou cannot run tar compaction unless last good segment is restored. Follow the instructions provided by Tiago here - http://help-forums.adobe.com/content/adobeforums/en/experience-manager-forum/adobe-experience-manager.topic.html/forum__u23j-when_tryingtostart.htmlReason for this corruptio...

After upgrade, once you have logged in to CRX or Content Explorer, you should be able to login to other modules including system console.