Format Mac OS Partition WD my Passport MAC OS Passport WD can't save files. El Capitan OS X format to work with both Windows computer and Mac, use disk utility and time machine - Western Digital. As of 2018, Western Digital offers no curtailment of alien drives for Mac computers – from the My Book Essential to the My Book Pro and the My Book Studio, about 30 WD drives comedy accurately with Apple’s macOS operating system, as does the My Passport Studio model.

The new WD My Passport external hard drives by default are setup for Windows computer. In this tutorial I will show you how to reformat your hard drive so you can use it on both a Mac and Windows computer. How-to: Reformat WD My Passport Hard Drive for Mac 1. Open Disk Utility (search for it in Spotlight Search or go to Launchpad > Other folder > Disk Utility).

Select hard drive and hit Erase. Set format to ExFat and scheme to Master Boot Record. These settings will allow the WD My Passport external hard drive to read and write on both Mac and Windows computer.