So, the possible reason could be that the external hard drive is formatted in Macintosh File System. Do you see any yellow\red exclamation mark inĪs you have mentioned that the external hard drive is recognizing in the Windows 7 but not accessible. What is the file format of the external hard drive?Ĥ. What is the make and model of the external hard drive?ģ. What is the exact error message you receive when you try to access the external hard drive?Ģ. However, before we proceed I would require some more information to assist you better.ġ. I will certainly help you out with this issue. As per the description, I understand that you are not able to access the external hard drive.