[dnanian]

OK. Please boot back to your regular drive. Then, use Finder's "Go To Folder" command to open the /private/var/log folder on your BACKUP drive. That is, you'll use something like:

/Volumes/your-backup-drive-name/private/var/log

Once there, copy the "system.log" to your desktop, then zip that and send it to me at the support email address.