The SETDEFAULTSET command sets the default volume set. The default volume set is normally the system volume set.  When a command has the volume set name as a parameter, the user is free to select any available volume set.  If the user does not select a volume set, the command selects the default volume set.
| Task | 
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Changes the default volume set.
| Capability | 
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No special capability required.
| Syntax | 
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   SETDEFAULTSET [[SNAME=]sname]
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| Parameters | 
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- sname
- The new default volume set. The master volume of this set must be mounted in the MASTER state. If omitted, the system volume set becomes the default volume set. Optional. 
| Example | 
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This example shows how to set the default volume set.
- Use the SHOWDEFAULTSET to find out which volume set is the default set. 
- To change the default volume set, use the SETDEFAULTSET command. 
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   volutil: SHOWDEFAULTSET
   Current default volume set: MPEXL_SYSTEM_VOLUME_SET
   volutil: SETDEFAULTSET BSET
   Note: Current default volume set changed to BSET.
   volutil: SHOWDEFAULTSET
   Current default volume set: BSET
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