My Passport for Mac portable storage works straight out of the box with Mac devices which makes it easy to get going quickly - drag and drop files to and from, or setup a backup routine with Apple's Time Machine software to help protect your photos, videos, music and documents. Model: WDBP6A0020BBK-WESN. Designed for Mac and Time Machine ready.
Password protection with hardware encryption. Reimagined design. Easy to use. Trusted drive built with WD reliability.
Formatted for Mac OS X. USB 3.0 port; USB 2.0 compatible.
I had the same problem with my external hard drive (1TB seagate NTFS format) and i learned that there was a file called 'mac installer.dmg' that would install the program that would allow my computer to read AND WRITE on the hard drive (this program is the same that ha14 has provided a link for). This program came free on my hard drive. I can read and write at home but when I try on a Mac my sharing & permissions says 'You can only read.' Is there a way to change this without formatting for Mac since I need to be able to use it on a PC? Why is my Western Digital external hard drive read only when I use a Mac? I bought a 500 GB external hard drive 'my passport.