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- Before Jessie (TODO: Trusty same?): use kenel parameter bootdegraded=true
- Jessie (TODO: Trusty same?): create /etc/initramfs-tools/conf.d/mdadm containing "BOOT_DEGRADED=true" and rebuild the initrd with updatecopy /usr/share/initramfs-tools/scripts/local-top/mdadm to /etc/initramfs-tools/scripts/local-top and patch it as described in https://jira.bluelightav.org/browse/FINANCESRV-368?focusedCommentId=53091 then rebuild the initramfs with
update-initramfs -u
When a RAID 1 md device is used for /boot, GRUB should be installed to both underlying devices, not to the md device. This is done using
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