On Mon, 2007-04-09 at 08:59 +0800, Joe Morris (NTM) wrote: > Art Fore wrote: > > I would assume grub is installed on the mbr when booting non-raid, is > > that right? > Not if you haven't changed the default. > > If so, when I install with raid setup, would not the new > > grub go in the mbr? > not in 10.2. They changed the default to install grub somewhere else > and install a generic mbr. That was supposed to fix problem, but for me > only caused problems. > > How can I tell if grub is in the mbr anyhow? > > > /etc/sysconfig/bootloader or through Yast etc/sysconfig Editor. > Variable is LOADER_LOCATION. > > On my system with raid, where you have root=(hd0,4) I have (hd1,0). I > > have root installed on MD) which is sda1 and sdc1. > > > > > Where then is your boot? Do you only have SATA drives? Does > /boot/grub/device.map confirm hd1 is either sda1 or sdc1? Our office > server also boots from a raid 1 from SATA disks, so SATA is not the > problem, just make sure device.map is correct. If all of those settings > are correct, and it still will not work, boot to the rescue system, > mount your raid 1 to mnt, cd /mnt and chroot, then run the grub command, > followed by root (hd 1,0), then setup (hd1). This will give you a > visual confirmation of what grub actually knows. BTW, assuming sda1 is > hd0,0 and sdc1 is hd1,0, while you are in grub, you can also install > grub on the mbr of sda by changing the 1 to 0, i.e. root (hd0,0), setup > (hd0). Then, you could boot from either disk. > > -- > Joe Morris > Registered Linux user 231871 running openSUSE 10.2 x86_64
Think I am getting a better understanding of this whole process, but have a few questions still. I am at work now, so I only have my laptop to look at, also Suse 10.2 but 32-bit. Yast bootloader shows root device as /dev/sda2. Yast Sysconfig Editor Loader_location shows blank, but also has note that default is mbr. /etc/sysconfig/bootloader shows LOADER_LOCATION="". /boot/grub/device.map shows (hd0) /dev/sda. /boot/grub/menu.lst shows root (hd0,1) for the linux partition. (First partition is Windows). /boot/grub/menu.lst also has a line gfxmenu (hd0,1)/boot/message. What does this mean? >From the above, it looks like hd0,1 equates to /dev/sda2. Is that right? Does the /boot/grub/device.map (hd0) /dev/sda Indicate the mbr is located on /dev/sda? Art -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
