can't drop dbspace or chunk

Hi, I was trying as an experiment to restore a single non-critical dbspace with online 7.22.uc3 and aix 4.2.1. This was a test database using ontape with logical logs set to /dev/null. I did an ontape -s -L 0 level 0 backup to tape. Then I tried a restore of one dbspace with ontape -r -D the_dbspace (if I remember the syntax correctly). After it restored the dbspace it asked if I wanted to restore the logs and I said no. It finished and left the chunk and dbspace in 'partial' status. When I restarted the server the dbspace went to down status. Now it won't even let me drop the dbspace or the database located in it. I get an error 311 and it says the primary and mirror chunk are bad (there was no mirroring). I tried doing the restore again and answered yes to the logical logs restore but it failed again. I guess there are two questions... 1) is there any way to get rid of the bad chunk/dbspace? 2) what is the correct procedure and configuration to be able to restore a single dbspace using ontape? (the manual seems to say you can do this.) (By the way, I am not able to try using onbar because we don't have a storage manager.) Thankyou for any suggestions, Mike Edelstein, Zytek Inc. mwedelstein@zyteksoftware.com