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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?

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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.rulesand put a new rule in there like this:

ACTION=="add", ATTRS{idVendor}=="0951", ATTRS{idProduct}=="1692", RUN+="/lib/udev/unmount.sh"

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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 Install comixcursors-lefthanded - a simple tool that realises reflexes on your computer.

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  • Oh well, looks like Cuttlefish is no longer available – Antony Sep 25 '14 at 2:29
  • I have installed Cuttlefisth just now on Ubuntu 14.04 – Anwar Jan 31 '15 at 15:05
  • used udisksctl in unmount.sh to unmount a Windows partition from a USB flash drive: udisksctl unmount --block-device /dev/sr1. for reference: udisks.freedesktop.org/docs/latest/udisksctl.1.html – Martin Zeitler Nov 9 '15 at 3:17
  • For those without udisks, you can also use umount /dev/sdb1 to unmount the drive and eject /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 4:35
0

To control which programs automatically start when you plug in a device, go to

System-Settings - Details - Removable Media

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Source: Ubuntu Documentation - Mount/USB

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