dasd.d0c64e `<bus ID of the DASD>`: A 64-bit DIAG call failed

Explanation

64-bit DIAG calls require a 64-bit z/VM version.

User response

Use z/VM 5.2 or later or set the sysfs 'use_diag' attribute of the DASD to 0 to switch off DIAG.

Severity

Warning