$ perl -MPath::Tiny -le "  print path( 'C:/')->realpath  "
C:/Documents and Settings/username

$ perl -MPath::Tiny -le "  print path( 'D:/')->realpath  "
D:/dev/misc

$ perl -MPath::Tiny -le "  print path( 'C:/')->absolute->realpath  "
D:/dev/misc/C:: No such file or directory at C:/perl/site/lib/Path/Tiny.pm line 449.

$ mversion Path::Tiny
0.028