External storage devices are successfully mounted to /run/media/myuser/ via udisks2 (udisksd service). I can read data from devices. However I can NOT write to them. I'm trying to edit directory ACLs in order to get write permissions for regularmyuser` I'm logged in with (not root)Default permissions are as follows:getfacl /run/media                                                                                                                                                                                                                   getfacl: Removing leading '/' from absolute path names                                                                                                                                                                                        # file: run/media# owner: root# group: rootuser::rwxgroup::r-xmask::r-xother::r-xgetfacl /run/media/myuser                                                                                                                                                                                                            getfacl: Removing leading '/' from absolute path names                                                                                                                                                                                       # file: run/media/myuser# owner: root# group: rootuser::rwxgroup::---mask::---other::---getfacl /run/media/myuser/mydisk                                                                                                                                                                                  getfacl: Removing leading '/' from absolute path names                                                                                                                                                                                        # file: run/media/myuser/mydisk# owner: myuser                                                                                                                                                                                                                               # group: myuser                                                                                                                                                                                                                               user::rwxgroup::---other::---The above default setup prevents me from writing data to mounted device /run/media/mydisk.  I tried to add write acl permission to myuser for /run/media/myuser dirrectory.  getfacl /run/media/myuser                                                                                                                                                                                                            getfacl: Removing leading '/' from absolute path names                                                                                                                                                                                        # file: run/media/myuser# owner: root# group: rootuser::rwxuser:myuser:rwxgroup::---mask::rwxother::---However that did not change anything.Please note that I'm not able to write any data to the mounted device even with sudo elevated myuser.Please, how can I solve the issue so I can write data to the mounted devices?Linux myuser 4.11.9-1-ARCH #1 SMP PREEMPT Wed Jul 5 18:23:08 CEST 2017 x86_64 GNU/Linux  systemctl status udisks2                          udisks2.service - Disk Manager                              Loaded: loaded (/usr/lib/systemd/system/udisks2.service; disabled; vendor preset: disabled)   Active: active (running) since Tue 2017-07-18 01:32:51 CEST; 11min ago                                                   Docs: man:udisks(8)                                    Main PID: 549 (udisksd)                                       Tasks: 5 (limit: 4915)                                    CGroup: /system.slice/udisks2.service                              549 /usr/lib/udisks2/udisksdJul 18 01:32:51 myuser systemd[1]: Starting Disk Manager...Jul 18 01:32:51 myuser udisksd[549]: udisks daemon version 2.7.0 startingJul 18 01:32:51 myuser udisksd[549]: Acquired the name org.freedesktop.UDisks2 on the system message busJul 18 01:32:51 myuser systemd[1]: Started Disk Manager.   Jul 18 01:32:52 myuser udisksd[549]: g_variant_new_string: assertion 'string != NULL' failedJul 18 01:32:52 myuser udisksd[549]: Mounted /dev/sdd1 at /run/media/myuser/mydisk on behalf of uid 1000
udisks2 - acl can't get write permissions for a regular user
linux;permissions;acl;udisks