1. Look for BIO_DELETE in the kernel. 2. Use GBDE or other encryption. 3. Stop bikeshed now, please. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk at FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.