[ydl-gen] default boot to OSX

[Kai Staats]

> I believe you can also add the line:
>
>    defaultos=macosx
>
> to the /etc/yaboot.conf file.  Then run:
>
>    /sbin/ybin
>
> to commit the change.  That should still give you the choice of OS, with
> OSX being the default.

Correct. In fact, using the OSX "Startup Disk" wipes the firmware setting, 
disabling one from even seeing the yaboot screen at all and forcing the use 
of the OPTION key.

To correct this:
http://www.terrasoftsolutions.com/support/solutions/ydl_4.0/reset_boot.shtml

kai