Hello, I have a SIL3512 S-ATA controller. I have tried to setup a raid1 with 2 discs. The problem I have is that the checksum of both drives is never correct (I used mdadm --examine /dev/sdxx). If I assemble a new raid with 2 partitions and the resync is finished the checksum on the two partitions is wrong. With "mdadm --detail /dev/md0" I get the state "active sync" of the raid device. I cannot use the created raid device as "/" partition. I get the following error in dmesg: "invalid superblock checksum on sda1" "invalid superblock checksum on sdb1" I have used the Debian Etch installer (Weekly - from 21.Sept). Regards Oliver Paulus - 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