kern/84750: 6-BETA2 reboot/shutdown with root_fs on external HDD fails

[Gleb Smirnoff]

Synopsis: 6-BETA2 reboot/shutdown with root_fs on external HDD fails

Responsible-Changed-From-To: freebsd-bugs->freebsd-usb
Responsible-Changed-By: glebius
Responsible-Changed-When: Wed Sep 28 18:41:08 GMT 2005
Responsible-Changed-Why: 
According to submitter the problem looks like USB related.

http://www.freebsd.org/cgi/query-pr.cgi?pr=84750