I am trying to setup a new raid array on a debian box, and I have not run into this problem before. I could not find a mdadm list, so I will ask here. If this is totally off topic, please disregard. I am attempting to setup a raid 6 array, but this is failing so I backing down to a no-frills raid 5 array. The system is Debian5, stock kernel, stock everything. The mdadm is the stock debian, pulled with apt-get, version 2.6.7. The machine in question has one IDE drive for linux, and 45 SATA drives. Debian sees all of the drives, and I have fdisked all of them with one partition of type fd (Linux autodetect raid). fdisk -l /dev/sd[a-z] /dev/sdaa[a-s] shows them all with no problems. The issue is that when I do a mdadm --create /dev/md0 --level=5 --raid-devices=45 /dev/sd[a-z]1 /dev/sda[a-s]1 to create a raid array with no spares, all defaults, it returns with invalid number of raid devices. I have searched the web to no avail. --verbose does not increase verbosity. There are no debug switches (that I know of) to mdadm. log files show nothing. Leaving off --raid-devices=45 does nothing. Changing the number of devices just for fun does nothing. (45,44,43,2,whatever). I am not sure if this is a problem with this version in debian, the number of drives that I have, or the setup. I have done this before (with a few less drives) with no problems. Any suggestions would be appreciated. Thanks. -- 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