Colorado Backup II / Restore Problem / Please Help !

[Remy Vannier]

Does Somebody could help me please?
I use Backup II V8.1 and external colorado 20Gb Tape Device.
I initiated a restore job on a PC that is not the PC I used for the backup job.
Thus, the CBII software started the backup file extract from the tape.
The job stops after around 10 minutes, displaying an error message : "an error occured during the backup file extract. The software detected a support error (07-03-23-01-5200)"
I found in the Error Code list that the error type BB=03 indicates : "BAD-BLOCK, Cause : Media error, data corrupt. Action : Mark as bad or reformat tape."
My Questions :
1)How to mark this Bad Block as bad ?
2) Does this action will allow to restart the restore job ignoring the bad block ?
Thanks in advance for your help as I have important data on this tape !