Sorry I missed out the link in my original response, >> you might find this article useful: http://beau.org/pipermail/whitebox-users/2006-April/007467.html P. Mace Eliason wrote: > I just think this might work > > I am using scsi drives so would I use root (sd0) I tried it but it > said error while parsing number > > I tried root (hd0) and it said filesystem type unknown, using whole disk > > I stopped at that point worried I might mess up the whole thing > > I have read other links that talk about doing it this way > > $ grub > > grub> device (hd0) /dev/hdc > grub> root (hd0,0) > Filesystem type is ext2fs, partition type 0xfd > grub> setup (hd0) > Checking if "/boot/grub/stage1" exists... no > Checking if "/grub/stage1" exists... yes > Checking if "/grub/stage2" exists... yes > Checking if "/grub/e2fs_stage1_5" exists... yes > Running "embed /grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded. > succeeded > Running "install /grub/stage1 (hd0) (hd0)1+15 p (hd0,0)/grub/stage2 > /grub/grub.conf"... succeeded > Done. > > do I need the device line first? > > Thanks > > > > > > > Peter Farrow wrote: >> You can replace the boot loader as follows: >> >> 1)Boot in REscue mode, and get a command prompt >> 2)Run grub, if your two disks are for example /dev/hda and /dev/hdb >> and the boot partition is the first on each: >> grub> root (hd0) >> .... >> grub> setup (hd0,0) >> ... >> grub>root (hd1) >> ... >> grub>setup (hd1,0) >> ... >> grub>exit >> >> This will put a stage1 boot loader on each disk, you should be able >> to boot the originally non-bootable disk now. Make sure you boot in >> the bios from the second disk, (which I presume is the one you want >> to keep), to make sure you could disconnect the original drive first >> and boot the system to try it. >> >> You might find this article useful. >> >> If the first disk has now been fixed but contains no data, you can >> export the partition table from the second disk using sfdisk, and >> re-import it on the first hard disk using sfdisk again, you can then >> use mdadm to hot add the first (replaced) disk to the second (running >> and now bootable) disk. >> >> Regards >> >> Pete >> >> >> >> Mace Eliason wrote: >>> Trying a different approch. >>> >>> Senario >>> >>> Raid 1 setup >>> Bootable raid drive failed >>> Mirror has been working for almost a month and then rebooted >>> Now can't boot mirror drive grub not mirrored from other drive. >>> >>> I Fixed bootable drive. >>> Question? >>> >>> Can I hook up both drives and boot fixed drive then rebuilt mirror >>> from nonbootable drive to bootable drive? >>> >>> Does the raid automatically rebuilt when I boot with both drives? >>> Can I run a command to rebuilt from one drive to the other and visa >>> versa >>> >>> I want to try it but I am worried that if I hook them up and it >>> boots that because the bootable drive has older info it might over >>> write the other drive. >>> Thanks >>> >>> Can't seem to figure out how to get the other drive bootable. >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> http://lists.centos.org/mailman/listinfo/centos >>> >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> >> > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >