WH> I'm at least curious as to how OS/2 is gonna react ;-}

I suspect that we might be begging Daniela to modify Build_Next_VolCB() and
Process_Partition() in OS2DASD.DMD .  (-:  

By the looks of it (i.e. from reading the source), Process_Partition() takes
the first recognisable partition in the MBR that it finds, and
Build_Next_VolCB() only calls it once per MBR.  

The modification should be relatively simple.  One simply needs to take the
for(i=0;i<4;++i) loop out of Process_Partition() and move it into both
Build_Next_VolCB() and BPBFromScratch(), modifying it along the way so that it 
doesn't exit prematurely any more by removing the `found' logic, and make
Process_Partition() take the current loop index as an extra parameter instead.

Daniela ?

 ¯ JdeBP ®

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