![Need Need](http://cdn.osxdaily.com/wp-content/uploads/2012/01/format-usb-mac.jpg)
I have a Lacie d2 Quadra 1tb External Hard Drive. I had it for years on a Mac. But unfortunately it bit the dust and I decided to get a PC. Now either because of time, corruption or because it may have been formatted for a Mac when I plug it into my PC I cant access it.
Hey there, Logan! You'd need to use a Mac to reformat your WD My Passport in a file system that can be read by Windows. The Mac is needed to store your files from the external HDD until you've reformatted it for use with Windows OS, because this change will result in erasing all the data on the drive.
To avoid such future incidents, I recommend using the FAT32 file system because this format can be read and written to by both operating systems. Here's a tutorial that explains how to perform this: Hope this helps!