JdP>> I'd like to see the output of PARTLIST [...]

 LP> See my post.  But PARTLIST is not a command.  I tried.

Download OS2CLU02.ZIP (or OS2CLU02.RAR) from your favourite files site (Andy
Roberts also has it on his system).  Unpack PARTLIST.EXE and OS2CLU02.DLL with 
UNZIP (or RAR), placing them somewhere accessible (such as a FAT partition on
the hard disc).  Boot OS/2 (if you aren't actually doing this from within
OS/2).  If you are booting from the installation floppies, shell out to the
command line with F3 when prompted to do so.  Run PARTLIST, redirecting the
output to file.

It was my guess that in the first MBR listed in PARTLIST's output, the primary 
MBR, you will have four FAT12/FAT16 entries.

 ¯ JdeBP ®

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