On 13.04.2017 14:03, Stefan Haberland wrote:
You have to mention that the partition detection process is -
independent of the disk type - a hierarchical process. Those partition
detection parts high in the hierarchy are asked first if they would like
to try and possibly take the disk as theirs. Only if they deny or fail
in a proper way the disk gets passed to the next layer. The DASD
specific part is very low in the hierarchy (which is OK since it is
quite uncommon for none s390 systems to have a DASD device). But this
leads to the point that most of the other partition tables overrule the
DASD  part. If there is for example a msdos style partition table that
states you have an empty disk without a partition on the FBA DASD, than
the DASD partition detection will never be asked and there will be no
default partition.
So you always have to take care if you recycle previously used disks.

Thanks Stefan,
now I understand the technical background much better.

--
Regards,
Juha

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