Hi, I have changed the group of /dev/mapper/control from »root« to »cdrom« and straced the command. This is the point where it hangs. Can someone explain me why this ioctl returns an error? ioctl(5, DM_VERSION, 0x80d5c80) = -1 EACCES (Permission denied) Thanks Lars --------------------------------------------------------------------- dm-crypt mailing list - http://www.saout.de/misc/dm-crypt/ To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx For additional commands, e-mail: dm-crypt-help@xxxxxxxx