[yocto] PXE booting ISO image fails with message "Waiting for removable media..."

[Vincent Daanen]

Hi,

We want to deploy image created with Yocto (Rocko) via PXE.
The target board is a Intel-based SBC (AAEON GENE BT05).

At first, we tried with a ISO from Archlinux and the target-board successfully booted.

Then we create a ISO using Yocto but boot hangs with a message “Waiting for removable media ...”.
Googling this message points me to this post: http://thread.gmane.org/gmane.linux.embedded.yocto.general/20611 which relates exactly the same problem, explain why the issue raises, gives an indication to how to fix .. and that’s all ☹

So at this point, we know that the problem comes from the /recipes-core/initrdscripts/files/init-live.sh file.
It seems searching for an /dev/sdx should be protected by a timeout set by default to 30 secs but during our trials, no timeout seems to exist.

What we do not understand, is how to highlight the differences between the Yocto-based and the Archlinux ISO files so that we can “unblock” the boot using the Yocto-based ISO file.

Is the someone here how could help?

Thanks

Vincent

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