>echo "add device range=devno-range ">>/proc/dasd/devices >echo "set device range=devno-range on ">>/proc/dasd/devices
If you issue the 'add device' that is enough to enable it. The 'set device .. on' is only needed when you've set it off yourself in the first place. If you first 'add device' and then LINK the disk, the machine check will trigger the driver. I typically have the dasd= define a bit larger, so I can do hcp def t3390 133 500 dasdfmt -n 133 -d cdl -b 4096 fdasd -a ... Rob
