On 31/07/17 20:57, Paul Tonelli wrote: > but a reboot always brings me back to step 2), with the need to press > ctrl-D at boot time. > > What am I missing? Am I using a bad version of the mdadm or kernel > (mdadm:amd64 3.3.2-5+deb8u2, kernel 4.8.0-0.bpo.2-amd64) or am I doing > it wrong in another way ? Okay. Step 2. Does an "mdadm --assemble --scan" work instead? This will tell us whether your raid array is fine, just that it's not being properly assembled at boot. Actually, before you do that, try a "mdadm /dev/md0 --stop". If the stop then assemble scan works, it tells us that your boot sequence is at fault, not the array. Can you post the relevant section of grub.cfg? That might not be assembling the arrays. Cheers, Wol -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html