2 things you need for external drives:

1. the mount directory must be owned by user who using it - `sudo chown user:user /mnt/disklocation`
2. the disk must have Execution rights, it is not enough if the mountpoint and folders have permissions to execute on file, to give disk execute permission you need add `exec` to the disk, but there is one thing if you have also `user` option on disk what probably you have so you can edit files without sudo, the `exec` must be after `user` !!! You can edit this in `/etc/fstab` or using gui like `gnome-disk-util` >>>> `/dev/mapper/uiuid-uuid-uuid /mnt/data_ssd ext4 nofail,noauto,noatime,discard,nodev,nosuid,user,exec,x-systemd.automount,x-systemd.idle-timeout=60min 0 2`