Date: Tue, 11 Nov 2008 12:23:40 -0800 From: "Peter Wemm" <peter@wemm.org> To: Volker <volker@vwsoft.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, Andriy Gapon <avg@icyb.net.ua>, freebsd-usb@freebsd.org Subject: Re: usb keyboard dying at loader prompt Message-ID: <e7db6d980811111223j438bb0e4se411682393460862@mail.gmail.com> 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 12:09 PM, Volker <volker@vwsoft.com> 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... ;) > > Volker I have long since stopped being surprised by what bios writers come up with. Or should I say "windows boot loader" instead of bios, because that is what it seems to have degenerated into these days. -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com; KI6FJV "All of this is for nothing if we don't go to the stars" - JMS/B5 "If Java had true garbage collection, most programs would delete themselves upon execution." -- Robert Sewell
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