GRUB install on hard drive

[Michael Mansour <micoots yahoo com>]

Hi,

I built a box last night with the following config:

4x 9gb UW2 scsi drives off an adaptec controller

First drive (/dev/sda) or hd(0,0) in grub.conf, I
installed Windows 2000 professional. I made this a
primary partition.

Second and third drives (/dev/sdb and /dev/sdc) or
hd(1,0) under grub.conf I created a Linux software
raid 1 mirror and installed Red Hat Linux 8.0. Also
made this a primary partition.

I seemingly mistakenly installed grub on /dev/sdb.

When booting the machine, Windows 2000 automatically
boots, when what I really want is for grub's menu to
kick in and allow me to choose it, defaulting to
Linux.

I realise now I should have chosen /dev/sda to install
grub on the redhat linux install (if it would allow
me) but am now trying to get grub installed on
/dev/sda, and realise I don't know how to do this
without re-installing linux.

Anyone know how to do this?

Googling I came up with grubconfig, which is a script
that installs grub into an MBR, but this does not seem
to work for software raid under /dev/md0 (which really
resides under /dev/sdb and /dev/sdc).

At the moment I'm booting the system from the boot
floppy, which only seems to start one cpu (it's a dual
system). I also tried changing the boot drive on
adaptec's controller to 1, but that didn't work
either.

Any ideas how I can install grub into this type of MBR
combination?

I've added my fstab, raidtab and grub.conf below for
you.

fstab:

/dev/md3                /                       ext3  
 defaults        1 1
/dev/md0                /boot                   ext3  
 defaults        1 2
none                    /dev/pts                devpts
 gid=5,mode=620  0 0
/dev/md5                /home                   ext3  
 defaults        1 2
none                    /proc                   proc  
 defaults        0 0
none                    /dev/shm                tmpfs 
 defaults        0 0
/dev/md1                /usr                    ext3  
 defaults        1 2
/dev/md2                /var                    ext3  
 defaults        1 2
/dev/md4                swap                    swap  
 defaults        0 0
/dev/cdrom              /mnt/cdrom             
iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0                /mnt/floppy             auto  
 noauto,owner,kudzu 0 0

/etc/raidtab:

raiddev            /dev/md3
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb5
    raid-disk     0
    device         /dev/sdc5
    raid-disk     1
raiddev            /dev/md0
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb1
    raid-disk     0
    device         /dev/sdc1
    raid-disk     1
raiddev            /dev/md5
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb7
    raid-disk     0
    device         /dev/sdc7
    raid-disk     1
raiddev            /dev/md1
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb2
    raid-disk     0
    device         /dev/sdc2
    raid-disk     1
raiddev            /dev/md2
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb3
    raid-disk     0
    device         /dev/sdc3
    raid-disk     1
raiddev            /dev/md4
raid-level          1
nr-raid-disks       2
chunk-size          64k
persistent-superblock       1
nr-spare-disks      0
    device         /dev/sdb6
    raid-disk     0
    device         /dev/sdc6
    raid-disk     1

/etc/grub.conf:

# Note that you do not have to rerun grub after making
changes to this file
# NOTICE:  You have a /boot partition.  This means
that
#          all kernel and initrd paths are relative to
/boot/, eg.
#          root (hd1,0)
#          kernel /vmlinuz-version ro root=/dev/md3
#          initrd /initrd-version.img
#boot=/dev/sdb
default=1
timeout=10
splashimage=(hd1,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.20-20.8)
        root (hd1,0)
        kernel /vmlinuz-2.4.20-20.8 ro root=/dev/md3
        initrd /initrd-2.4.20-20.8.img
title Red Hat Linux (2.4.20-20.8smp)
        root (hd1,0)
        kernel /vmlinuz-2.4.20-20.8smp ro
root=/dev/md3
        initrd /initrd-2.4.20-20.8smp.img
title Red Hat Linux (2.4.18-14smp)
        root (hd1,0)
        kernel /vmlinuz-2.4.18-14smp ro root=/dev/md3
        initrd /initrd-2.4.18-14smp.img
title Red Hat Linux-up (2.4.18-14)
        root (hd1,0)
        kernel /vmlinuz-2.4.18-14 ro root=/dev/md3
        initrd /initrd-2.4.18-14.img
title Windows 2000
        rootnoverify (hd0,0)
        chainloader +1

Any help is appreciated.

Michael.


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