kern/158569: ROOT MOUNT ERROR (caused by AHCI module)
Derek Schaeffer
terrawattshock at gmail.com
Fri Jul 1 16:10:01 UTC 2011
>Number: 158569
>Category: kern
>Synopsis: ROOT MOUNT ERROR (caused by AHCI module)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Jul 01 16:10:00 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Derek Schaeffer
>Release: 8.2-RC1
>Organization:
University of Louisville
>Environment:
[X at pcbsd-8686 /usr/home/X]$ uname -a
FreeBSD pcbsd-8686 8.2-RC1 FreeBSD 8.2-RC1 #4: Mon Dec 27 12:25:57 PST 2010 root at build8x64.pcbsd.org:/usr/obj/usr/pcbsd-build82/fbsd-source/8.2/sys/PCBSD amd64
>Description:
FreeBSD gives "ROOT MOUNT ERROR" when the kernel is loading modules at startup. This is regardless if the installation has been dual-booted or not. The problem appears to be the AHCI module.
Hardware:
Intel i7 980x processor
MSI Big Bang-XPower motherboard
XFX HD-485X-ZNFC Radeon HD 4850 video card
DDR3 2000 ram (16GB)
>How-To-Repeat:
FreeBSD does not have AHCI enabled by default, however, PCBSD does.
In the loader.conf file,
ahci_load="YES"
will cause the problem to occur.
>Fix:
In the loader.conf file,
ahci_load="NO"
allows normal startup.
This problem was addressed in the (long) thread: http://forums.freebsd.org/showthread.php?t=20724
And in the PC-BSD forum: http://forums.pcbsd.org/showthread.php?p=85036#post85036
>Release-Note:
>Audit-Trail:
>Unformatted:
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