dasd-eckd.d1a88a <bus ID of the DASD>: Detecting the DASD disk layout failed because of an I/O error
Explanation
The disk layout of the DASD could not be detected because of an unexpected
I/O error. The DASD device driver treats the device like an unformatted DASD,
and partitions on the device are not accessible.
User response
If the DASD is formatted, make sure that the DASD is working correctly,
then set it offline and back online. If the DASD is unformatted, format the
DASD, for example, with dasdfmt.
ATTENTION: Formatting irreversibly destroys all data on the DASD.