Similarly, Windows OS will ask us to format the HFS+ formatted drive when we connecting such a disk, let along edit files saved on HFS+ formatted hard disks unless we resort to third party programs. However, when we connect a NTFS formatted disk to Mac, Mac OS X doesn't allow us to write files to the drive neither edit files, though it can read a NTFS drive. Currently, hard drives for Windows PC are always formatted with NTFS, while hard disks for Mac are formatted with HFS+. Why Need to Format External Hard Drive for Mac and PC To put it simply, if you want to share external hard drive between Mac and PC, you need to format an external hard drive for Mac and PC. Actually, most external hard disks could be compatible with Mac and PC as long as you format them correctly. Well, is there an external hard drive that could be shared between Mac and Windows PC?
