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.rulesand 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.
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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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