If you use the 'hatch' command which is a command line, not bhatch.
Answer all the prompts and when it ask to "Select Object"
just press enter.
See below as I created a circle hatch with no boundry.
Command: hatch
Enter a pattern name or [?/Solid/User defined] <ANSI31>:
Specify a scale for the pattern <10.0000>: 50
Specify an angle for the pattern <0.0000>:
Select objects to define hatch boundary or <direct hatch>,
Select objects:
Retain polyline boundary? [Yes/No] <N>:
Specify start point:
Specify next point or [Arc/Close/Length/Undo]: a
Enter an arc boundary option
[Angle/CEnter/CLose/Direction/Line/Radius/Second pt/Undo/Endpoint of arc]
<Endpoint>:
Enter an arc boundary option
[Angle/CEnter/CLose/Direction/Line/Radius/Second pt/Undo/Endpoint of arc]
<Endpoint>: cl
Specify start point for new boundary or <apply hatch>: