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products:sbc:edge2:development:boot-sequence

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products:sbc:edge2:development:boot-sequence [2026/03/30 05:28] (current)
gray created
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 +~~tag>Edge2 boot-sequence~~
 +
 +====== Edge2 OS Boot Priority ======
 +
 +Edge2 have possibility boot-up from : ''eMMC'', ''TF Card'', ''SPI-Flash''
 +
 +<WRAP info >
 +We talking there only about 1st stage SoC boot, 
 +next second stage OS loading possible for any other devices and depends from ''U-Boot'' configurations
 +</WRAP>
 +
 +===== Default boot priority =====
 +
 +  - SPI-Flash <wrap important>always highest priority</wrap>
 +  - eMMC
 +  - TF-Card 
 +
 +<WRAP tip >
 +If the SPI Flash contains a second-stage bootloader (e.g., OOWOW), it will attempt to boot from TF Card first when a card is inserted.
 +
 +See also: [[products:sbc:edge2:install-os:install-os-into-external-storage|]]
 +</WRAP>
 +
 +===== Booting from TF Card via TST Mode =====
 +
 +If both SPI Flash and eMMC contain no valid boot image or are corrupted, you can force boot from a TF card using the TST Mode shortcut:
 +
 +  - Insert a bootable TF card into the Edge-2L.
 +  - Quickly press the FUNCTION (FN) key three times within 2 seconds.
 +  - The device will then boot from the TF card.
 +
 +This method is useful for recovery or when booting from external storage is required.
 +
 +===== OOWOW boot special shortcut =====
 +
 +Hold ''FUNCTION'' and short press ''RESET'' to force boot [[:OOWOW]] service from SPI-flash, and skip other boot sources
 +
 +<WRAP important>TF-card slot must be empty.</WRAP>
 +
  
Last modified: 2026/03/30 05:28 by gray