Date: Sat, 8 Mar 2008 18:44:50 -0800 From: Jeremy Chadwick <koitsu@freebsd.org> To: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> Cc: freebsd-stable@freebsd.org Subject: Re: BTX on USB pen drive Message-ID: <20080309024450.GA92566@eos.sc1.parodius.com> In-Reply-To: <20080308222145.68b284e9.torfinn.ingolfsen@broadpark.no> References: <200803061742.34291.vincent@netaktiv.com> <200803071059.48837.doconnor@gsoft.com.au> <200803070913.12978.jhb@freebsd.org> <20080308131610.43b57ee6.torfinn.ingolfsen@broadpark.no> <47D29352.5050503@andric.com> <20080308222145.68b284e9.torfinn.ingolfsen@broadpark.no>
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On Sat, Mar 08, 2008 at 10:21:45PM +0100, Torfinn Ingolfsen wrote: > On Sat, 08 Mar 2008 14:23:30 +0100 > Dimitry Andric <dimitry@andric.com> wrote: > > > No, update it to 1.45 (=HEAD) and then apply the patch, that's much > > easier. > > Yes, that worked better - the patch applied cleanly, amd I could > rebuild the loader. > > Here is how I did the rebuilding (all this done on another machine, > which have no troubles booting from usb): > I booted the machine from usb (da0), replaced btx.S with revision 1.45 > and did: > cd /usr/src > patch -p6 < .../btx_real.patch > cd sys/boot/i386 > make > Then I copied the files to the hard drive: > boot0cfg -B -b /usr/obj/usr/src/sys/boot/i386/boot0/boot0 da0 > cp -v /usr/obj/usr/src/sys/boot/i386/loader/loader /boot > > Is this the correct way to do build and update the files? To quote lolcats: "yr doin it wrong". The Handbook goes over how to rebuild the bootblocks. See Section 24.6.5.2, which is for Serial Console. You can skip the obvious steps (items 1-3, and item 5). Patch the source *before* doing item 4, obviously: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-setup.html There's a lot of pieces involved when it comes to BTX; all stages (boot0, boot1, boot2/loader) appear to use the BTX library in src/sys/boot/i386/btx/lib. Thus, following the procedure above is the right way to do things. Your boot0cfg line to reinstall the boot0 MBR looks fine, but I don't use boot0 myself (I prefer to go right into boot2/loader). -- | 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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