Comment 4 for bug 278176

# cat /etc/initramfs-tools/conf.d/mdadm
# mdadm boot_degraded configuration
#
# You can run 'dpkg-reconfigure mdadm' to modify the values in this file, if
# you want. You can also change the values here and changes will be preserved.
# Do note that only the values are preserved; the rest of the file is
# rewritten.
#
# BOOT_DEGRADED:
# Do you want to boot your system if a RAID providing your root filesystem
# becomes degraded?
#
# Running a system with a degraded RAID could result in permanent data loss
# if it suffers another hardware fault.
#
# However, you might answer "yes" if this system is a server, expected to
# tolerate hardware faults and boot unattended.

BOOT_DEGRADED=true