Unable to change ownership on USB device

Lowell Gilbert freebsd-questions-local at be-well.ilk.org
Thu Jan 19 21:42:28 UTC 2017

Gerard Seibert <carmel_ny at outlook.com> writes:

> I have several USB devices, all formatted with FAT32 or exFat. I can
> mount them on my FreeBSD 11 machine; however, I cannot change the file
> ownership on the device. I have a rsync script for backing up the
> "/var/mail/vmail" and it subdirectories that are created by dovecot. I
> cannot use the script to back up to the USB drive since it cannot
> change the file ownership.
> I hope I am explaining this correctly. My question is how do I change
> the ownership of a mounted USB drive formated with FAT32 or exFat?

It's an option to the mount command.
If you're using the one from the base system, see "man mount_msdosfs".

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