AC>
  > Under dos, I use int 21h, function 44h to switch the floppy
  > drive to 'b' to avoid the dos message "insert disk in drive
  > b" which occurs when 'a' and 'b' share the same physical
  > drive.
AC>

  Turn off the hard error handler using DosError for the duration of the
  open call, or use the OPEN_FLAGS_FAIL_ON_ERROR flag to DosOpen.

  > JdeBP <
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