Hi I have read instructions for udev, I also found many example on how to do this. I want to lock in the SDA/SDB/SDC for my drives and I came up with a rule like this KERNEL=="sd?", SUBSYSTEM=="block", ENV{ID_SERIAL}=="ST500DM002-1BC142_W2A56H8A", NAME="sda", RUN+="/usr/bin/logger ID_SERIAL=$ENV{ID_SERIAL} set to /dev/sda ", GOTO="END_PERSISTENT_DISK" However, it is not clear to me is in what files I need to add my rules. Do I add a random file "99-my-rules.rules" in "/etc/udev/rules.d/"? Do I copy a file from "/usr/lib/udev" to "/etc/udev/rules.d/" and add my rules? Do I need to be careful with the NUMBER, e.g. "60-my-rule.rules"? Jobst -- 186,262 miles/second : Not just a good idea, it's the LAW. | |0| | Jobst Schmalenbach, General Manager | | |0| Barrett & Sales Essentials |0|0|0| +61 3 9533 0000, POBox 277, Caulfield South, 3162, Australia _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos