ไดรฟ์ภายนอก: ไฟล์ที่สร้างทั้งหมดเป็นของรูท

The following link can help you modify the ownership and/or permissions: [Mount NTFS partition in a USB drive with custom permissions and owner](https://askubuntu.com/questions/11840/how-do-i-use-chmod-on-an-ntfs-or-fat32-partition/956072#956072)

If you want a more detailed control of the ownership and/or permissions, I suggest that you use a Linux file system, for example `ext4`, which is the standard file system of Ubuntu. But Windows refuses to read it, so if that is necessary you may try `udf`, which has other problems (lack of active support but may work for you). See [this link](https://askubuntu.com/questions/952673/how-do-i-copy-a-file-larger-than-4gb-to-a-usb-flash-drive/952706#952706); scroll down to read about `udf` and the package `udftools`.

Does this answer your question? [How do I use 'chmod' on an NTFS (or FAT32) partition?](https://askubuntu.com/questions/11840/how-do-i-use-chmod-on-an-ntfs-or-fat32-partition)

@vanadium There is another thing...that all files are owned by `root` rather than the user which created them.

@Luca, is it an option for you to use a Linux file system, or must the filesystem work with Windows?

That is what the `uid` option determines in the link provided. Study the ntfs mount options to set it up like you want.

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