Re: grub fails to boot, prints only a single dot

[Andrei Borzenkov]

On Tue, Jun 9, 2015 at 4:49 PM, Alex Regan <address@hidden> wrote:
> Hi,
>
> I have a fedora20 system on a 1U rackmount Supermicro chassis with two disks
> in a mdadm RAID1 configuration that's been running for quite some time. I
> recently added two additional disks, in a separate RAID1, and mounted it on
> /var.
>
> After adding the two new disks, the system failed to boot. No grub boot menu
> or anything. Just a single dot then a newline, where the system would sit
> there until I eventually had to hard reset it to boot.
>
> Removing the two new disks and the system boots again normally (except for
> the new /var mountpoint, of course).
>
> Running grub2-install again for all four disks doesn't help. I've even
> uninstalled and reinstalled the kernel, and tried to manually regenerate the
> initramfs with no change.
>
> Does anyone understand grub enough to help troubleshoot this? I suspect it's
> something to do with the second-stage loader?
>

Are you sure system does not try to boot from new disks?