There are 3 possible resolutions to this problem:
RESOLUTION 1:
Microsoft recommends performing a DBCC CHECKDB command on the database to attempt to repair the database.
This procedure is explained in the following articles: http://support.microsoft.com/kb/828339
https://support.microsoft.com/en-us/help/2015760/how-to-troubleshoot-msg-7105-in-sql-server
If errors are found and repaired, attempt the migration again.
RESOLUTION 2:
Restore a previous version of the database before the corruption occurred and attempt the migration.
RESOLUTION 3:
Check the DB system for failed hardware, usually a hard drive or disk controller, replace the failed hardware.
