kern/90050: boot -s drops serial console at sh prompt

Kris Kennaway kris at
Tue Dec 6 13:40:28 PST 2005

The following reply was made to PR kern/90050; it has been noted by GNATS.

From: Kris Kennaway <kris at>
To: Nick Johnson <freebsd at>
Cc: FreeBSD-gnats-submit at
Subject: Re: kern/90050: boot -s drops serial console at sh prompt
Date: Tue, 6 Dec 2005 16:32:57 -0500

 On Tue, Dec 06, 2005 at 01:10:03PM -0800, Nick Johnson wrote:
 > When rebooting into FreeBSD 6.0 single-user mode for the first time from FreeBSD 5.4, the serial console appeared to 
 > hang after mounting root.
 > Gaining physical access to the machine revealed that the system had not hung, but was displaying the "Enter path to sh" prompt,
 > which had not been echoed to the serial console.
 > Input from the serial console was not recognized.  Sending a break from the serial console did not cause the debugger to start.
 > /boot.config contains the flags -Dv
 > It is unknown whether this happens any time FreeBSD 6.0 is rebooted into single user mode or if it only happens 
 > when following the instructions in /usr/src/UPGRADING for upgrading from 5.4 to 6.0.
 Did the same thing work under 5.4?

More information about the freebsd-bugs mailing list