Hello Ty Prince,
Thank you for posting in Q&A forum.
An $OF file on your external hard drive is typically a temporary file created by various applications or the operating system. These files are often used to store temporary data and can usually be deleted without causing any issues. However, it's always a good idea to ensure that the file is not in use by any application before deleting it.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
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