Data loss when hard shutdown!

[Bruce Cran]

On Sat, 2 Oct 2010 19:19:12 +0700
Phan Quoc Hien <phanquochien at gmail.com> wrote:

> Thanks for your respond.!
> Yes. I pulled the power plug .
> I edited rc.conf and save it then pulling the power plug. And system
> boot next time rc.conf is a blank file...!

This is an issue when using SoftUpdates - data isn't written to disk
immediately, and empty files are produced when power is lost. See
http://www.freebsd.org/doc/en/books/faq/disks.html#SAFE-SOFTUPDATES for
details. 

-- 
Bruce Cran