[Bug 120375] Re: cannot boot raid1 with only one disk

[Dustin Kirkland]

You should not need to reinstall.

To solve this, you need to:
 a) live upgrade all packages (specifically, you need to upgrade grub,
mdadm, and initramfs-tools)
 b) install grub to the raid (for instance, if /dev/md0 provides your
/boot directory, you can do "grub-install /dev/md0")

Cheers,
:-Dustin

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cannot boot raid1 with only one disk
https://bugs.launchpad.net/bugs/120375
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