The Ohm-Stick is a bootable USB-Stick that contains a complete Suse Linux distribution and a shock-ful of applications that are recommended for your successful studies at the Ohm Hochschule, N├╝rnberg.

All you have to do is to insert the Ohm Stick into a USB slot on your PC or laptop and restart your computer while pressing ESC (or DEL).

It is not meant to be used with a Mac. On a Mac just open a terminal to get a Unix shell!

Here are some helpful frequently answered questions:

Q How do I boot from the USB stick, my computer does just boot as usual from my harddrive?

Enter the BIOS of your computer and select the USB stick as the boot device. This depends on your computer:

  • On the lab’s ASUS laptops press ESC during startup, enter the BIOS and select the USB stick from the dislayed list (listed as “1100″).
  • On most other computers with Phoenix, AMI or AWARD BIOS please press DEL, F1, F2, F10 or F12 during startup to enter the BIOS.
  • If your BIOS settings require a “boot order” to be specified, make sure that USB precedes all other boot device options, particularly the hard drive (HDD).

Q The stick is slow. Can I improve its performance?

Yes, you can install the Ohm-Stick on the hard drive of your computer. Then it will run like a breeze. To do so, click on the “Install” option icon shown on the Ohm-Stick desktop. The installation procedure is safe and won’t erase any existing data or operating system on your hard drive. The procedure will also copy all your personal data from the stick to the hard drive.

Q Why does it take so long to boot the system from the stick?

The first time you boot from a stock stick takes quite some time due to the system’s performing exhaustive work on the disk to set up the system, preparing the file system for storage. After a reboot, the system should boot much faster, making use of the previously prepared file system. However, working on (i. e. reading from and writing to) a flash medium is considerably slower than working on a hard disk. The see previous question on this point.

Q How can I change the keyboard layout?

Goto the System Menu → Configure Desktop → Hardware → Input Devices → Keyboard. Then choose Layouts and add a language. For example “de” for a German layout. Then you will see a flag icon in the task bar, which indicates the actual selected keyboard layout.

Q How can I install additional software?

If you want to install the “Blender” Software, for example, you simply run the following command on the terminal:

 sudo zypper install blender

Q How can I unzip archives with the GUI:

Run “sudo zypper in ark” on the terminal. Or select and install “ark” in the OpenSuse Software-Installer.

Q How do I create another stick with the Ohm-Stick Suse Linux system?

Download the latest Ohm Stick iso image from here and dump it onto an empty USB stick. The procedure depends on the system:

  • On Linux we use dd:
    • First download and uncompress the EFI-Stick-12.1.i686–12.1.8.raw.gz image using gunzip:
      • gunzip EFI-Stick-12.1.i686–12.1.8.raw.gz
    • Find out about the USB stick device by typing mount on the Unix terminal
      → we assume that the USB device is listed as /dev/sdz
    • Make sure that the attached USB stick is not mounted, e.g. type sudo umount /dev/sdz
      • Then type sudo dd if=image.iso of=/dev/sdz bs=1M, if your USB stick is available as /dev/sdz
        Be careful, selecting the wrong device can nuke your harddisk!
  • On Mac it is the same as with Linux, we use dd as follows:
    • Find the USB stick device by typing diskutil list
      → the USB device is listed as something like /dev/disk3
    • Type diskutil unmountDisk /dev/disk3, assuming that /dev/disk3 represents the relevant block device.
      Doing so should hide the Finder icon of the USB stick on the desktop.
    • Type sudo dd if=image.iso of=/dev/disk3 bs=1m
    • Eject the device by typing diskutil eject /dev/disk3
  • On Windows you need an image writing tool - e.g. from http://en.opensuse.org/SDB:Live_USB_stick . This page also includes a description how to use it.

Q How do I connect to a wireless network?


EFI WiFi networks

Contemporary versions of the Ohm Stick provide pre-configured WiFi network settings. To use the VPN, connect to OhmNet and start Aventail. Refer to this page for further information. To use Eduroam instead, right-click eduroam in the list of wireless network and edit the data in the Wireless tab of NetworkManager. The fields should be reasonably pre-filled, but you have to provide your personal username and passwort, specified via the indicated e-mail address (xxx@ohm-hochschule.de). Refer to this page for further information.

Q Is there a German version of this HowTo?

Nope, sorry! English is the language of coding!

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