I want to stop a USB device from automounting in Ubuntu 13.04. For example, when I connect my iPhone 5 to my desktop I am consistently prompted for what I want to do (whether or not I want to erase the "iPod" connected to my machine, etc). Since I don't use the computer as anything more than a way to charge the device, is there a way to prevent the device from mounting and still allow the device to draw current from the machine?
2 Answers
Using the terminal and gedit
First find the ID for your device from a terminal using lsusb
when your device is connected (eg 0951:1692
). Also you should to find what is the name of your device with lsblk
. Let say the name is /dev/sdb1
.
Create a new script, let say unmount.sh
in /lib/udev
with sudo -H gedit /lib/udev/unmount.sh
and put next lines inside:
#!/bin/bash
udisks --unmount /dev/sdb1
udisks --detach /dev/sdb
Save the file, close it and make it executable with:
chmod +x /lib/udev/unmount.sh
Now, you must to make a new rule file in /etc/udev/rules.d/
with sudo -H gedit /etc/udev/rules.d/100-unmount-iphone.rules
and put a new rule in there like this:
ACTION=="add", ATTRS{idVendor}=="0951", ATTRS{idProduct}=="1692", RUN+="/lib/udev/unmount.sh"
To reload udev rules without restart, use next command:
sudo udevadm control --reload-rules
Using Cuttlefish
Or, another way is to install and use Cuttlefish - a simple tool that realises reflexes on your computer.

- 169,590
To control which programs automatically start when you plug in a device, go to
System-Settings - Details - Removable Media
Source: Ubuntu Documentation - Mount/USB

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udisksctl
inunmount.sh
to unmount a Windows partition from a USB flash drive:udisksctl unmount --block-device /dev/sr1
. for reference: http://udisks.freedesktop.org/docs/latest/udisksctl.1.html – Martin Zeitler Nov 09 '15 at 03:17udisks
, you can also useumount /dev/sdb1
to unmount the drive andeject /dev/sdb
to detach it (it will no longer show up on the sidebar of the file browser). This can also be done by UUID instead (umount /dev/disk/by-uuid/<UUID>
), in case having other USB devices plugged in changes the device name (i.e./dev/sdb
becomes/dev/sdc
) – Brandon Miller Sep 20 '20 at 04:35sudo -H gedit /etc/udev/rules.d/100-unmount-iphone.rules
. Add this line:SUBSYSTEM=="usb", ACTION=="remove", ENV{ID_MODEL}=="iPhone", RUN+="/usr/bin/killall -s SIGINT /usr/lib/gvfs/gvfsd-afc"
. Source: https://askubuntu.com/questions/581810/iphone-does-not-unmount-properly-when-unplugged – Stiin Sep 19 '22 at 16:13