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Those are rebuilt automatically if they are missing:
To test it, just use an external disk, copy those files on a HFS partitioned volume, press altoption on reboot to select the start volume.
To test it, just use an external disk, copy those files on a HFS partitioned volume, press alt on reboot to select the start volume.
To test it, just use an external disk, copy those files on a HFS partitioned volume, press option on reboot to select the start volume.
