Ok, That will work:
jbedit -a -f myhost.mydomain.com:\\.\Tape0 -E "drive Element address"
when I put without -E option, I created wrong devices with wrong media type and family, which I could not edit anymore (greyed out).
There is a sort of answer to my problem:
There is: How to remove Unconfigured Devices (Orange Wrenches)
ID: esg100197
SOLUTION
Symptoms
Unconfigured devices shown in Devices > Devices section of Management Console, or under Devices > Libraries.
'Orange Wrench' icons cannot be removed from GUI.
Cause
Unconfigured devices are those that NetWorker has discovered via the Consoles' "Scan for Devices" feature, but has not yet assigned to a library (or is a library that is not yet configured for use).
They cannot be removed as is, because they are not configured; thus they have no RAP database object, but are represented by entries as entries in both the NSR Storage Nodes and NSR Jukebox objects
Resolution
There are three ways to remove these devices:
1. Right-click and Configure the device, then delete it.
NOTE: This will fail if there is an existing device of the same name of the unconfigured device which is already configured.
2. Delete the Storage Node objects (Requires NetWorker shutdown):
a) Shut down NetWorker, and make a copy of the /nsr/res/nsrdb folder (in case of issues).
b) Enter the offline database by typing nsradmin -d /nsr/res/nsrdb (or the path to nsrdb folder).
c) From the nsradmin> prompt: delete type: nsr storage node (and answer y or yes for each prompt).
d) Restart NetWorker . All Storage Nodes which have configured devices will be automatically recreated.
WARNING: If any Storage Node is accessing NDMP devices, make note of its "Password" property prior to deletion.
3. Update the Unconfigured attributes (Does not require NetWorker shutdown):
a) Create a script containing the following lines:
. type: nsr storage node
update unconfig device names: ""
update unconfig device descriptions: ""
update unconfig device model types: ""
update unconfig device serial numbers: ""
update unconfig device WORM support: ""
update unconfig device library names: ""
update unconfig library names: ""
update unconfig library reference names: ""
update unconfig library descriptions: ""
update unconfig library control ports: ""
update unconfig library models: ""
update unconfig library serial numbers: ""
. type: nsr jukebox
update unconfigured devices: ""
update unconfigured drive ids: ""
update unconfigured drive addresses: ""
b) Run the script using nsradmin: nsradmin -i script_name.
I have tried 3 which does not work, but do the cosmetics only. Number 1 need I guess enabler code, which I used already. For solution number 2, I do not have courage.
I guess that the problem is that there might be a bug problem related to Networker 7.4.