 
 		(callback) ->
 			return callback() if not IS_WINDOWS
-			win32.rescanDrives(callback)
+			win32.rescanDrives(_.unary(callback))
 
 	], (error) ->
 		return callback() if not error?

os = require('os')
fs = require('fs')
_ = require('lodash')
async = require('async')

IS_WINDOWS = os.platform() is 'win32'


		(callback) ->
			return callback() if not IS_WINDOWS
			win32.rescanDrives(_.unary(callback))

		(callback) ->
			if not options.progress
