On Tue, Oct 01, 2019 at 11:59:14AM -0700, David F. wrote: > mdadm shouldn't be scanning fd0 or sr0 by default First of all I apologize, it's my misunderstanding completely. For some reason I thought you wanted it removed from /proc/partitions... For mdadm, there are plenty of devices it should not touch. Such as device mapper, network block device, and md devices. Well, that applies for my system anyway. Hence my mdadm.conf restricts it to /dev/sd* /dev/loop* And loop devices are only included because I like to experiment with those. Since it can be configured I never had an issue with it, so not sure what the default should be. Regards Andreas Klauer