I bought a Hitachi external drive last week as I need to transfer files off my Mac. Any time I go to transfer files from my Mac to the external I get the "not permitted" sign. I then tried to format the drive for PC and Mac but I got an "erase failed" notice. I have also downloaded and installed MacFUSE but that did nothing to resolve the problem. Is the drive faulty? Any feedback appreciated.
More about :mac files copy external hard drive format
If the drive is new and nothing has been copied to it yet you are best to plug it into your pc but to be compatible to both it MUST be formatted fat32 NOT ntfs.
fat32 is the only common format that can be read on pc and mac.
Chances are that drive is formatted in ntfs so you can't transfer files to it.
To cut a long story short exFAT can be used with both Mac and many Windows operating systems as well as FAT32. You can also get software for either Mac or Windows that can read and write the other Operating Systems favourite format, but there is usually a cost.