For a typical livecd boot using udev, you'd check for the root device with a udev rule like: KERNEL=="sr[0-9]", PROGRAM=="/lib/udev/vol_id -l %N", RESULT="<some label>", SYMLINK+="root" This creates a /dev/root symlink to whichever CD device holds the proper CD/DVD. However, this currently fails repeatedly on some machines, as the run of vol_id gets ENOMEDIUM attempting to open the CD device. I suspect this is because the initial medium scan is actually done after the uevent for /dev/sr0 is emitted. Can the open path be fixed to block until the medium state is initially known? I don't see how this can be worked around from userspace - you don't get another uevent for the media detection. Bill -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
