Date: Tue, 11 Nov 2008 12:24:25 -0800 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Volker <volker@vwsoft.com> Cc: freebsd-usb@freebsd.org, FreeBSD Stable <freebsd-stable@freebsd.org>, Andriy Gapon <avg@icyb.net.ua>, Peter Wemm <peter@wemm.org> Subject: Re: usb keyboard dying at loader prompt Message-ID: <20081111202425.GA6568@icarus.home.lan> In-Reply-To: <4919E65C.1020307@vwsoft.com> References: <4912E462.4090608@icyb.net.ua> <491586B9.2020303@vwsoft.com> <4919851B.7050800@icyb.net.ua> <e7db6d980811111055j24ed8f4rb4539c6678553b97@mail.gmail.com> <4919E65C.1020307@vwsoft.com>
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On Tue, Nov 11, 2008 at 09:09:00PM +0100, Volker wrote: > On 11/11/08 19:55, Peter Wemm wrote: > > ... > > * There were other consequences of using the partition ID hack - I > > think I remember it turning off the apic for msdos mode. > > > > Your problems may be different, but mine were caused by a BIOS > > whitelist of MBR partition id's. What a stupid problem. On that > > motherboard I ended up taking the path of least resistance and using > > the PS/2 adapter plug on the keyboard. > > Peter, > > very interesting what you've found. That reminds me on some > investigations I did as I was hunting USB boot device problems. > > Some BIOSes do not check the partition (slice) ID but are looking for a > file system magic. If a FAT filesystem is detected, the BIOS does some > stupid things (like ignoring the active partition flag and booting the > FAT slice no matter what you've flagged active). Just an example and > off-topic to Andriy's keyboard problem. > > But when combining that with your findings, it may still be a thing to > check for... ;) Since you folks in this thread have some pretty good experience with BIOS behaviour and bootloader/filesystem stuff, could I ask that someone take a look at something I posted at over on -fs? I'm out of ideas at this point. http://lists.freebsd.org/pipermail/freebsd-fs/2008-November/005317.html Danke! -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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