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Re: kern/48446: 'boot -d' doesn't enter ddb

The following reply was made to PR kern/48446; it has been noted by GNATS.

From: Paul Goyette <>
Subject: Re: kern/48446: 'boot -d' doesn't enter ddb
Date: Sun, 29 Nov 2015 15:24:42 +0800 (PHT)

 I just tried this again on my nearly-current 7.99.21 machine.
 If I enter 'boot -d' at the boot prompt, it does indeed enter the
 debugger, even when using a USB keyboard.
 However, the keyboard is no longer available to enter any debugging
 commands.  I'm guessing that the system has taken over the keyboard
 from the BIOS's legacy code, but our USB stack is not yet alive, so
 the keyboard is non-functional.
 If it matters, this machine has a UEFI BIOS (mouse-enabled rather
 than simple text-based).
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