FC7 - RAID10 - Grub freezes

[Jobinma]

Hi folks,

I have a computer with 4 disks (320gb). At the system startup, a disk controller application enables me to set if I want or not to use RAID (kinda 2nd Bios). I go there and take the 4 disks to set a RAID10.

I reboot and install FC7 without problems. But at the end, when I reboot to start Fedora and use it, but it shows the word "GRUB _" and it doesn't do anything.

I tried to reinstall : same problem. I already checked my DVD (md5 and SHA1) and everything is ok. I the disabled the RAID10 and the installation worked perfectly and I can use the system without any problem. But, no RAID is set which is a problem it must be enable.

Did I miss something during the installation ? Is there a way to re-enable everything after the installation ?

Thanks for your help!

[stevea]

Is your raid10 control in the BIOS ??? Is the "disk controller application" part of your bios ?

My hunch is that grub mis-identified the bios drive number and you just need to re-wrie the MBR.

Try booting the Fedora DVD in rescue mode and allow it to try to mount your installation read/write (not readonly). At the last screen hit "OK" and get to the "# " prompt. Type "mount" command and be sure to observe exactly the drive name mounted at /mnt/sysimage. Then follow the directions and "cd /mnt.sysimage; chroot .". Look in /boot/grub/device.map and see what the drive/name association is.

My hunch is that you will need to run "grub-install ?something?" but you'll need to examine exactly what 'something' is. From the rescue scenario you should be able to run grub and try to use the grub 'find' command to see how grub actually sees the disks. Perhaps 'find /grub/grub.conf' or /boot/grub/grub.conf depending on the config.


FWIW You might want to consider the Linux software RAID10, since then if your mobo or controller died you could recover your stuff on another system easily enough. I haven't tested the RAID10 software peformance, so you should look at performance papers or compare the actual performance before selection (fwiw most of the bios solutions have inferior peformance).

[Jobinma]

Well, it's probably a disk controller application as it's not directly in the BIOS.

I'll try what you've told me and see what happens. Hope it will work!

Thank you