Date: Wed, 7 Nov 2007 19:33:12 -0800 (PST) From: Alou Dialy <aloudialy@yahoo.com> To: freebsd-questions@freebsd.org Subject: Re: How can I use the Windows loader to boot FreeBSD Message-ID: <9995.27528.qm@web45516.mail.sp1.yahoo.com>
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--- Giorgos Keramidas <keramida@ceid.upatras.gr> wrote: > On 2007-11-07 15:19, Alou Dialy > <aloudialy@yahoo.com> wrote: > > I read this FAQ but I am still confused. How does > it > > work if you have windows on ad0 and freebsd on > ad1. > > > > > http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/disks.html#NT-BOOTLOADER > > AFAICT, the 'explicit' list of steps missing from > the FAQ is: > > 1. Run boot0cfg from FreeBSD: > > # boot0cfg -B /dev/ad1 > > 2. Copy the MBR of the ad1 disk to a file: > > # dd if=/dev/ad1 of=bootsect.bsd bs=512 count=1 > > 3. Save this file to a floppy disk, or some other > Windows-accessible > place. Using a floppy-disk, formatted as FAT, > this could be done > by typing: > > # mount -t msdosfs /dev/fd0 /mnt/dos > # cp bootsect.bsd /mnt/dos > # umount /mnt/dos > > 4. Boot into Windows and copy the file > A:\BOOTSECT.BSD to C:\ > OK, but how does this work: > When the FreeBSD boot manager runs it records the last OS booted by setting the active flag on the partition table entry for that OS and then writes the whole 512-bytes of itself back to the MBR so if you just copy /boot/boot0 to C:\BOOTSECT.BSD then it writes an empty partition table, with the active flag set on one entry, to the MBR. How can /boot/boot0 be in the MBR and in the file that gets loaded by ntldr. Doesnt the MBR load ntldr. > 5. Continue as described in the FAQ :) __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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