>>377 は、こんな感じのやつを立ち上げ時に実行。

# XXX memory disk hack
rm -rf /md/usr
( cd / ; tar cf - usr/local/bin ) | ( cd /md ; tar xBpf - )
( cd / ; tar cf - usr/local/sbin ) | ( cd /md ; tar xBpf - )
( cd / ; tar cf - usr/local/libexec/apache22 ) | ( cd /md ; tar xBpf - )
( cd / ; tar cf - usr/local/lib/perl5 ) | ( cd /md ; tar xBpf - )
( cd / ; tar cf - usr/local/lib/php ) | ( cd /md ; tar xBpf - )
mount_nullfs /md/usr/local/bin /usr/local/bin
mount_nullfs /md/usr/local/sbin /usr/local/sbin
mount_nullfs /md/usr/local/libexec/apache22 /usr/local/libexec/apache22
mount_nullfs /md/usr/local/lib/perl5 /usr/local/lib/perl5
mount_nullfs /md/usr/local/lib/php /usr/local/lib/php