You can use the mtlib command to query individual tape volumes, there is a field called volume type which will tell you the tape format.
mtlib -l/dev/lmcp0 -qV -V##### Replace ##### with your tape number. This is really only good for checking one or two tapes, but you could write a script to do this for many different tapes, John Monahan Senior Consultant Enterprise Solutions Computech Resources, Inc. Office: 952-833-0930 ext 109 Cell: 952-484-5435 http://www.compures.com "Blair, Georgia" <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 02/14/2002 11:45 AM Please respond to "ADSM: Dist Stor Manager" To: [EMAIL PROTECTED] cc: Subject: tape volume format Is there a command to use that displays the format of a tape volume? We did an upgrade of our tapedrives from b1a to e1a. Tapes were marked read-only and data was moved off. If some of the tape volumes were not marked read-only or put in read/write erroneously how can you detect which they are? Thanks [EMAIL PROTECTED]