--- Y-Z <[EMAIL PROTECTED]> wrote: > > How about use the following two steps, > > 1. Boot Linux use "linux rescue" > 2. input command "chroot /mnt/sysimage" > 3. input command "grub-install /dev/sda", where > /dev/sda/ is the boot > disk with MBR. I suppose that u installed windows on > /dev/sda
Yes, Windows is installed on /dev/sda while /dev/sdb and /dev/sdc are raid 1 soft mirrors. But that is the key term, they are soft mirrors. The grub-install script will _not_ work with installing the MBR on a soft mirrored linux install. The error returned when trying to do the above is something of the form: /dev/md0 cannot allocate drive from BIOS (from memory). After much more Googling with the above error, I came up with the answer. on bugzilla.redhat.com this is a known bug with grub-install dating back to Red Hat 7.2 when it was first logged with Red Hat in 2001. The bug has existed since then from 7.3 to 8.0 and still exists in 9. Reading through that bug report many asked why Red Hat haven't fixed it for more than 2 years, the answer was, Red Hat consider it a 7.2 bug and not anything more. Well, it's still a bug and the solution is given in there. What I had to do was go into the grub shell, type: grub> root (hd1,0) grub> setup (hd0) And it wrote the MBR to the Win2000 partition (disk). I could not do "root (hd0,0)" as grub came back saying it couldn't mount the NTFS patition. I write this detail here in the hope that anyone else experiencing this problem can search the Red Hat archives and read on how to fix it. It was a frustrating bug to deal with, and really, Red Hat should have fixed it by now. Thanks for your help and advice nevertheless. Michael. > Michael Mansour wrote: > > > 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) > === message truncated === http://search.yahoo.com.au - Yahoo! Search - Looking for more? Try the new Yahoo! Search -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
