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By the end of this section, you will understand the purpose of the fields in the customization menus of the Gemstone Imager application.
After selecting the board, operating system, and storage options in the Gemstone Imager application and clicking the Next button, the OS Customisation menu appears. This menu contains three tabs: General, Services, and Options.

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General Tab

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Hostname and Password Field

  • The setting is activated by checking the box.
  • The Set Hostname field is used to set the board’s name. The default name is gemstone.
  • The Password field sets the password for the default user (gemstone). There is no default value; entering a password is mandatory.

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Configure Wireless LAN Field

  • The setting is activated by checking the box.
  • Enter the network name (SSID) in the SSID field.
  • Enter the network password in the Password field.
  • If the network is hidden, check the Hidden SSID box.
  • Select the country code for your location in the Wireless LAN country field.

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Set Locale Settings Field

  • The setting is activated by checking the box.
  • Click the Time Zone box and select your time zone from the dropdown menu.
  • Click the Keyboard layout box and select your preferred keyboard layout from the dropdown menu.

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Set Disk Encryption (Cryptsetup)

  • The setting is activated by checking the box. Encrypts the disk to prevent the system from booting without entering the password.
  • Enter the password in the Disk Password field.

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Write SD Card’s Image to eMMC on First Boot

  • The setting is activated by checking the box. Writes the image from the SD card to the onboard storage (eMMC) during the first boot, allowing the board to boot from the onboard storage.

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Services Tab

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Enable SSH Field

  • The setting is activated by checking the box. Allows terminal connections to the board over the network.
  • When enabled, the default option Use password authentication is selected, allowing anyone with the password to connect. If Allow public-key authentication only is selected, only devices with the provided key can connect.

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Enable VNC Field

  • The setting is activated by checking the box. Allows connecting to the board’s desktop GUI using only a browser.

Todo: Screenshot taken from VNC connection

  • When enabled, a password must be entered in the Password field. No default password is assigned.
The password must be a maximum of 8 characters. Longer passwords will be truncated after the 8th character.

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Gadgets Field

  • The T3-GEM-O1 board can provide virtual Ethernet, serial port, and storage device connections via its Type-C port. Check the box to enable these features:
  • Enable Storage Gadget: Activates the virtual storage device.
  • Enable Ethernet Gadget: Activates the virtual Ethernet device.
  • Enable Serial Gadget: Activates the virtual serial port device.
When connecting to a Windows host computer, certain drivers must be installed to use the gadget features. For instructions, click here.

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Options Tab

  • Play Sound when finished: When checked, a notification sound plays upon completion of the writing process.
  • Eject media when finished: When checked and writing to an SD card, the SD card is safely ejected automatically upon completion. This has no effect when writing to onboard storage (eMMC).
  • Serial Port: If writing to the board’s eMMC, select the serial port connected to the board. This has no effect when writing to an SD card.
  • Ethernet: If writing to the board’s eMMC, select the Ethernet port connected to the board. This has no effect when writing to an SD card.