I have an external hard drive that has Ubuntu installed on certain partitions. Whenever I connect it to my main PC, Windows attempts to mount two of the partitions, which are ext4 filesystems. So, it is unable to mount them, and I receive the "Do you want to format this disk?" window.

Is there a way to prevent Windows for attempting to mount these specific partitions of the hard drive?


The most common suggestion is to put a tiny FAT32 partition on it. That way, Windows recognizes something, instead of thinking it's a blank disk.

Also see this question.

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