> and on explicit request. My understanding of SCSI is that devices do > not send an unsolicited message on powerup. The only driver I looked Devices (targets in SCSI-speak) do not send unsolicited messages, ever. While it would be trivial to scan for newly attached devices even from user space (parse /proc/scsi/scsi, try to add each device not already present, repeat), the detection of devices gone missing might be more difficult without kernel support. Michael