Re: MBR problem

From: Ryan Merrick (sandshirmp_at_comcast.net)
Date: 01/31/04

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    Date: Sat, 31 Jan 2004 14:20:53 -0800
    To: "Kjell B." <homebell@telia.com>
    
    

    Kjell B. wrote:
    > Kjell B. wrote:
    >
    >>I just installed FreeBSD 5.2-RELEASE (using the mini-install CD) on my
    >>laptop which already had Win XP Home + Win XP Pro on it. During
    >>partition definition I chose not to touch the MBR. (I wanted to make
    >>use of Windows boot.ini for booting into FreeBSD.) Nevertheless,
    >>whenever I boot I get directly to the FreeBSD boot menu where there's
    >>no option to boot Windows.
    >>
    >>disk layout:
    >>ad0s1: 31 MB DELL slice
    >>ad0s2: 8001 MB Windows XP Home slice
    >>ad0s3: 8510 MB extended DOS slice with three logical Win partitions
    >>(one of them Windows XP Professional)
    >>ad0s4: 2533 MB FreeBSD slice
    >>
    >>I tried to restore the MBR using fixmbr from Windows Recovery
    >>Console. It doesn't help. I claims it has overwritten the file, but I
    >>still get directly into FreeBSD at boot.
    >>
    >>I've tried setting ad0s2 and ad0s4 as bootable and then writing
    >>changes (W) in FDISK partition editor in sysinstall. At the following
    >>choice of MBR, I choose 'Install the FreeBSD Boot Manager'. I then
    >>get "ERROR: Unable to write data to disk ad0!" followed by "Disk
    >>partition write returned an error status!". The same result also if I
    >>choose 'Standard' or 'None' in the MBR choice menu.
    >>
    >>(Another weird thing in sysinstall -> fdisk: Positioning the cursor
    >>on any of the slices and hitting F1 yields "Sorry! The slice file is
    >>not provided on this particular floppy image". This indicates to me
    >>that something is wrong with my installation, but what?)
    >>
    >>Any hints on ways out of this?
    >>
    >>Another question: In 5.2 there are two sysinstalls -
    >>/stand/sysinstall and /usr/local/sbin/sysinstall whereas in 4.8 I
    >>only find /stand/sysinstall. Which one should I use with 5.2 and
    >>what's the difference between them?
    >
    >
    > OK, I did find a hint Googling a little more.
    >
    > Apparently GEOM prevents me from using sysinstall on the installation for
    > changing MBR. I need to use the install CD and run sysinstall from there.
    > Then I could do the change of MBR and got the standard FreeBSD boot manager.
    > I now can boot Win XP or FreeBSD using the standard FreeBSD boot manager.
    > What remains is to get rid of that and use Windows boot.ini for choosing
    > between Win XP and FreeBSD, i.e. overwrite the MBR using fixmbr.
    >
    Hello,

    I have use to do this with win2k. The trick I used to boot into windows was
    to used fdisk -a from freebsd and switch the active partition to the one I
    wanted to boot. Then to get back to freebsd I would use the manage disk
    volumes(?) for win2k to set the freebsd partition active and reboot.

    -- 
    -Ryan Merrick
    sandshrimp@comcast.net
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