Date: Mon, 23 Mar 2009 11:41:25 -0400 From: "Douglas Berry" <bitnix@bitnix.ca> To: freebsd-current <freebsd-current@freebsd.org> Cc: Robert Noland <rnoland@freebsd.org> Subject: Re: Booting from usb hard disk Message-ID: <200903231541.n2NFfP6f002755@monk.cnd.dundas.on.ca> In-Reply-To: Your message of "Mon, 23 Mar 2009 05:36:15 CDT." <1237804575.1771.7.camel@balrog.2hip.net>
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On Mon, 23 Mar 2009 05:36:15 CDT, Robert Noland wrote: > So I have my i386 install on a usb hard disk, which I can only boot > on one machine now. The one machine that I can make work has a bios > option that reads "BIOS ehci handoff". This used to work with the > old usb stack. The machines that it doesn't work on, boot the > kernel, but fail to mount root, giving me the forbidding mountroot> > prompt, which is immediately followed by the message saying that da0 > is attached. da0 is however not listed in the available boot > devices list. I tried playing around with the timeout in > vfs_mount.c, but that didn't seem to have any impact. It has been > suggested that this may be a "geom" timeout, but I don't know > anything about the boot system really. I have been using tunefs(8) labeled partitions on my usb hard disk under CURRENT. I changed the fstab entries to match the labels (eg. assume mylabel is myroot, /dev/da0s1a becomes /dev/ufs/myroot) It works well on most systems. On some systems, I see the symptom you show, but I am saved by the labels showing up just after the mountroot prompt. I am then able to type ufs:/dev/ufs/myroot and resume the boot. Maybe this helps you? cheers, doug
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