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netinst.iso on USB flash drive -- unexpected results

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<BACKGROUND>
Yesterday I had attempted to use netinst {on USB flash} to do an 
atypical install to another USB device. It failed due to at least an 
invalid /boot/grub/grub.cfg on the target device. I suspect I know what 
is happening, but need to retrace my steps to document how to reproduce 
the problem.

<Current>
I downloaded a fresh copy of debian-9.1.0-i386-netinst.iso .
As root I then did:
   dd if=/dev/zero bs=2048 count=1 seek=16 of=/dev/sdb
   Created a msdos partition table using Gparted
   dd if=/home/richard/Downloads/debian-9.1.0-i386-netinst.iso 
of=/dev/sdb bs=4M
    parted /dev/sdb print
RESULTING IN FOLLOWING
   Warning: The driver descriptor says the physical block size is 2048
   bytes, but Linux says it is 512 bytes.
   Ignore/Cancel? i
   Model: Verbatim STORE N GO (scsi)
   Disk /dev/sdb: 31.0GB
   Sector size (logical/physical): 2048B/512B
   Partition Table: mac
   Disk Flags:

   Number  Start   End     Size   File system  Name   Flags
    1      2048B   6143B   4096B               Apple
    2      1942kB  2253kB  311kB               EFI

<Question>
Should have I expected this result?

TIA

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netinst.iso on USB flash drive -- unexpected results Richard Owlett <rowlett@cloud85.net> - 2017-09-26 13:40 +0200
  Re: netinst.iso on USB flash drive -- unexpected results "Thomas Schmitt" <scdbackup@gmx.net> - 2017-09-26 14:10 +0200
    Re: netinst.iso on USB flash drive -- unexpected results Richard Owlett <rowlett@cloud85.net> - 2017-09-26 14:40 +0200

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