How To Determine The Memory Left On A My Passport For Mac Hard Drive

I’m using WD SmartWare Pro 2.4.12, and a WD My Passport Ultra USB drive for backups. My internal “C” drive is 1TB in size; the Passport Ultra drive is also 1 TB in size. All of the data on my hard drive amounts to 228 GB in size, yet the backup data takes up 878 GB on the My Passport Ultra drive, almost four times as much as everything on my “C” drive. I started with a fresh, empty backup drive a few months ago, and now it’s running out of space. What am I missing here?

The My Passport portable drive is trusted to store the massive amounts of photos, videos and music you love. Available in an array of vibrant, fun colors, the sleek style fits comfortably in the palm of your hand, so you can easily take your treasured content everywhere you go. Checking Available Hard Drive Space on Mac OS 10.6 or Earlier If your Mac is running Mac OS 10.6 or earlier, here's how to check to the available hard drive space on your Mac: Switch to the Finder, and then open a new Finder window. You have to select the drive that needs to be formatted, in this case it would be the My Passport drive, on the left side of the panel. After the drive has be chosen, you go to ‘Erase’ to select the Mac format and then proceed to format, or erase, the drive. Connect the hard drive to a USB port, right click in My computor, highlight the drive and click properties.

If everything on my hard drive is being backed up, then I would expect the total used space to be the same, or almost the same, on both the C drive and the Passport backup drive. Instead I am gradually running out of space on the backup drive. How can I fix this? I’m having the same problem with the same drive. C: has only about 3 GB of stuff, and the terabyte drive is nearly full. I changed the setting from saving 5 copies of everything to one.