This situation will happen if the bootstrap had been destroyed by the
<filename>vinum
</filename> installation. Unfortunately,
<filename>vinum
</filename> accidentally leaves only 4 KB at the beginning of its partition free before starting to write its
<filename>vinum
</filename> header information. However, the stage one and two bootstraps plus the bsdlabel require 8 KB. So if a
<filename>vinum
</filename> partition was started at offset 0 within a slice or disk that was meant to be bootable, the
<filename>vinum
</filename> setup will trash the bootstrap.