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Re: RAID1 all bootable



Francesco,
If your RAID is mdadm based, I would use a live CD and then chroot into your installed OS. Once in, I would use grub-install /dev/sd? to add the MBR info to the mirror.  Once you are back up and running  you can use mdadm to remove the defective disk and if  desired add a new one to the array.  

Shane


On Fri, Mar 1, 2013 at 12:20 PM, Francesco Pietra <chiendarret@gmail.com> wrote:
Hi:
With a raid1 amd64 wheezy, one of the two HDs got broken.
Unfortunately, I had added grub to sda only, which is just the one
broken. So that, when it is replaced with a fresh HD, the OS is not
found. Inverting the SATA cables of course does not help (Operative
System Not Found). In a previous similar circumstance, I was lucky
that the broken HD was the one without gru.

Is any way to recover? perhaps through Knoppix? I know how to look
into undamaged RAID1 with Knoppix.

Also, when making a fresh RAID1 from scratch, where to find a Debian
description  of how to make both sda and sdb bootable? (which should
be included by default, in my opinion)

Thanks
francesco pietra


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Shane D. Johnson
IT Administrator
Rasmussen Equipment



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