To maintain backward compatibility, '-o nfs' is also accepted,
defaulting to stale_rw
+dos1xfloppy -- If set, use a fallback default BIOS Parameter Block
+ configuration, determined by backing device size. These static
+ parameters match defaults assumed by DOS 1.x for 160 kiB,
+ 180 kiB, 320 kiB, and 360 kiB floppies and floppy images.
+
<bool>: 0,1,yes,no,true,false