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

From: Andrei Borzenkov
Subject: Re: grub fails to boot, prints only a single dot
Date: Tue, 9 Jun 2015 20:43:14 +0300

В Tue, 09 Jun 2015 13:38:27 -0400
Alex Regan <address@hidden> пишет:

> Hi,
> >> Or copy the contents of /boot, format an individual partition, mount it
> >> on /boot, copy the data back, and run grub2-install?
> >
> > Yes. It makes sense to wipe out metadata to be sure (mdadm
> > --zero-superblock)
> Okay, so I can do this for each of the two partitions, then run 
> grub2-install on both drives, correct?

Yes. I would reduce existing md0 first and install on drive removed
from it leaving md0 intact. It makes it easy to rebuild it.

> This way, if the first drive fails, I can configure the BIOS to boot 
> using the second drive, correct?

More or less. You would need to reconfigure BIOS even with MD RAID in
place. The only problem would be /boot in /etc/fstab, but I'm not sure
if /boot even needs to be mounted for normal operation.

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