"Can't open boot device" XO laptop firmware/OFW issue?

[Adam Holt]

Attached photo (in-lined below) should be an easy firmware/boot issue to
solve I hope!  Can anybody remind me what's need / what I need to try next?

Clarif: this is an XO-1.5 (SKU100) with:
- up-to-date RTC clock
- up-to-date firmware (Q3C17)
- up-to-date OS (OLPC OS 13.2.9)

And yet I can no longer boot it (it did boot earlier today, with an earlier
OS).

Thanks all for ideas!

[image: Inline image 1]
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