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====== Startup modes ======
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It is possible to start the Unipi Edge in different modes. In normal circumstances the device starts in [[#regular_mode|regular mode]].

===== Regular mode =====
The regular mode of the device's startup. The device enters this mode several seconds after plugging in the power supply. The mode is physically indicated by [[.:07-led-indication#pwr_is_on_act_is_on_with_short_blinks|PWR LED continuous emitting and ACT LED emitting with short flashes]]. 


===== Service mode =====
This mode serves for [[en:hw:004-edge:04-image:0-flash|uploading]] or [[en:hw:004-edge:04-image:backup|backing up the operating system]], or for [[en:hw:004-edge:04-image:0-flash|restoring]] access to the unit. The service web interface is available in this mode, all remaining unit functions are disabled. This mode does not publish [[en:hw:004-edge:01-first-steps:mdns-hidden|mDNS record]]. 

  * [[.:09-startup-modes:02-service-mode|Starting the device in service mode]]
  * [[.:09-startup-modes:02-service-mode#description_of_the_service_web_interface|Description of service web interface]]
  * [[.:09-startup-modes:02-service-mode#service_mode_console|Service mode console]]

Using the service interface, is is possible to [[en:hw:004-edge:04-image#flashing_the_os_using_a_usb_flashdisk|flash OS via USB flashdisk]] or [[en:hw:004-edge:04-image:0-flash#flashing_the_os_using_the_service_interface|flash OS from the service web interface]].

===== Initialization mode =====
This special mode can be used to restore the device in cases such as: boot sector corruption, or flash of another OS than Unipi. This mode allows direct access to the eMMC storage via the **USB-C INIT connector**. On Edge variants without USB A ports, it can used to flash/backup the OS image.

  * [[.:09-startup-modes:03-init-mode#installing_the_rpiboot_tool|Rpiboot tool]]
  * [[.:09-startup-modes:03-init-mode#connect_internal_emmc_as_usb_storage|Conneting eMMC as USB storage]]
  * [[.:04-image:backup#backup_using_initialization_mode|Creating an OS backup using initialization mode]]
  * [[.:04-image:0-flash#restore_using_initialization_mode|Flashing / restoring OS backup using initialization mode]]