Thread: Aura H2O Boot from external SD
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Old 11-24-2016, 08:31 PM   #12
sti
Junior Member
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Posts: 5
Karma: 22094
Join Date: Nov 2014
Device: kindle PaperWhite, kobo Aura H2O
Hello tshering,

indeed the offsets might be different on the Kobo Touch or maybe the flag does not exist at all. Assuming they are the same, I am wondering about
Quote:
position 0x80040
On the Aura H2O the byte is stored at position 47 within the hardware confiuration area. There is a header of 16 bytes before that, so within the config it is at position 0x3F (63). So I guess you're just off by one byte.

In any case, being logged into the kobo I suppose you can run
Code:
ntx_hwconfig -s /dev/mmcblk1
to read the contents of the hardware configuration on the external SD card. Look for
Code:
[47] BootOpt=ESD:ON
If it says OFF you changed the wrong byte. If the name of byte 47 is not BootOpt, we have to look into the u-boot sources how it works on the Touch. The device ID (or byte 0 PCB in the hardware configuration) would be useful then.

Hope this helps.

Stefan
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