If you look in the general twirl-down under format you can see that this drive is formatted in the windows NT file system. The cause of this is due to the filing system the storage device is formatted in. Looking in the info window you can see that the permissions for the drive only allow for reading. If you right click the drive and select Get Info, you can see at the bottom of the info window under the sharing and permissions twirl down, you only have permission to read from this drive and nothing else. Trying to copy a file to my USB drive gives an icon indicating that you cannot copy files to the volume. Something is obviously not right with the storage drive. If I try to delete a file, by pressing Command+Delete, nothing happens and, if I right click the file, the option to move it to the trash can is missing. But if I attempt to copy a file to the drive on my Mac, I get an icon telling me that I am not able to copy the file. I am able to open the drive and can even copy files from the drive. I have a USB drive that I purchased and use with various PCs at work and school. Quick Tip: Solving “Read Only” External Drive Problems on Your Mac

Quick Tip: Solving 'Read Only' External Drive Problems on Your Mac

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