grub refuses to install to raid array

Posted by ronno on Super User See other posts from Super User or by ronno
Published on 2012-09-18T09:19:03Z Indexed on 2012/09/18 9:40 UTC
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ubuntu

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raid

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grub

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bootloader

I have a software raid 0 setup with dual booting Windows 7 and Ubuntu 12.04. The GRUB bootloader that is already on the hard drive seems to work fine. However, since the latest package update for grub, it refuses to install the new version to the hard disk. grub-install throws the following error:

/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/mapper/< raid name>_RAID0p9. Check your device.map. Auto-detection of a filesystem of /dev/mapper/< raid name>_RAID0p9 failed. Try with --recheck. If the problem persists please report this together with the output of "/usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to < [email protected]>

update-grub pops the same "/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/mapper/< raid name>_RAID0p9. Check your device.map." every alternate line.

I don't understand what exactly is going on. I'm afraid to reinstall the grub package because it might mess up the boot, which currently works fine. Is it safe to just ignore this?

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