Date: Fri, 13 May 2005 15:26:55 -0700 (PDT) From: Doug White <dwhite@gumbysoft.com> To: Rainer Duffner <rduffner@ip-tech.ch> Cc: freebsd-stable@freebsd.org Subject: Re: Problem booting 5.4 Message-ID: <20050513152513.Y30976@carver.gumbysoft.com> In-Reply-To: <4283862D.1060401@ip-tech.ch> References: <4283862D.1060401@ip-tech.ch>
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On Thu, 12 May 2005, Rainer Duffner wrote: > Hi, > > I installed FreeBSD5.4 on a server with a 3ware 7006-2 controller and > two 120GB disks as RAID1 > I cannot boot this install. (I get some kind of panic or endless loop, > but the display is re-painted so fast I cannot read it). > What I *can* do is insert my SuSE9.2-pro cd1, boot from that and at the > grub-menu say "boot from harddisk". > That boots FreeBSD. > > On advice from IRC, I tried: > # boot0cfg -B twed0 > > -which leads to this output > > boot0cfg: write_mbr: /dev/twed0: No such file or directory This is a erroneous message. The actual problem is: 484 boot0cfg NAMI "/dev/twed0" 484 boot0cfg RET open -1 errno 1 Operation not permitted This is a known problem with certain MBR layouts. To work around this problem, set: sysctl kern.geom.debugflags=16 then try your boot0cfg. There's a protection mechanism that sometimes gets confused by certain partition table layouts. Flag 16 disables that protection. I don't recommend running this unless you are explicitly trying to updating something in a partition table-like area; its very easy to destroy your system with the flag set! -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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