Date: Mon, 19 Mar 2012 08:49:29 +0100 From: Polytropon <freebsd@edvax.de> To: David Demelier <demelier.david@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Dualboot with Windows 7 Message-ID: <20120319084929.2d42449b.freebsd@edvax.de> In-Reply-To: <4F66E052.5020406@gmail.com> References: <4F665C46.9060800@gmail.com> <20120319072852.21ae5030.freebsd@edvax.de> <4F66E052.5020406@gmail.com>
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On Mon, 19 Mar 2012 08:29:22 +0100, David Demelier wrote: > On 19/03/2012 07:28, Polytropon wrote: > > On Sun, 18 Mar 2012 23:05:58 +0100, David Demelier wrote: > >> Hello, > >> > >> I try to create a dualboot with Windows 7, I set up partitions like that : > >> > >> ada0s1 -> NTFS (windows recovery) > >> ada0s2 -> NTFS (windows main partition) > >> ada0s3 -> BSD > >> ada0s3a -> freebsd-swap (3G) > >> ada0s3b -> freebsd-ufs / (remaining space from drive) > > > > Erm... according to traditional partitioning, isn't > > the 'a' partition reserved for booting, 'b' for swap? > > I see you have installed everything into one / partition > > which technically is no problem and should work, but > > it's not on the boot partition. > > > > > > You're right, but I made a mistake while writing, my a partition is / > and b is swap. Okay. > >> And then I let the installer complete the step, because FreeBSD didn't > >> let you (since 9.0) choose between the boot manager nothing was > >> installed and the boot directly goes to Windows 7. > > > > You need to install all the required stages for booting. > > If I understand the process correctly, the slice 's3' needs > > code to "branch" to the boot partition (which is supposed > > to be the 'a' partition), and the boot selector needs to > > be accessed from the "beginning of the disk" - you said > > you're using EasyBCD for this which is okay. > > > > > > I followed the part 13.3.2 from > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/boot-blocks.html > > I think this should be enough, isn't it? it says bsdlabel -B will > replace the boot1 and boot2 stage so all of them are installed. Looks correct. > Now the question is how to branch the a partition as the "boot partition" ? No need. As soon as the "branching" from ada0-"start" -> ada0s3 has been processed, the 'a' partition ada0s3a will be accessed as it is the boot partition. It will then continue stage 1 and 2 and finally access the loader, which will load the kernel. In 13.3.2 it is explained as follows: They [Stage One, /boot/boot1, and Stage Two, /boot/boot2] are located outside file systems, in the first track of the boot slice, starting with the first sector. This is where boot0, or any other boot manager, expects to find a program to run which will continue the boot process. The number of sectors used is easily determined from the size of /boot/boot. In your case, the "boot slice" (for FreeBSD) is ada0s3 where the boot manager EasyBCD will "branch" to. Getting just a cursor (as you described) makes it hard to identify where the process hangs. If EasyBCD is the last thing you see, I assume the FreeBSD boot process isn't even initiated. Every part of it (MBR boot manager, boot0, boot1, boot2 and loader) would issue some kind of text when accessed. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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