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Garrett: Secure Boot and Restricted Boot

Garrett: Secure Boot and Restricted Boot

Posted Apr 9, 2013 20:22 UTC (Tue) by apoelstra (subscriber, #75205)
In reply to: Garrett: Secure Boot and Restricted Boot by paulj
Parent article: Garrett: Secure Boot and Restricted Boot

The messages which modern distros have hidden away behind user friendly splash screens?
Right now, without secure boot, it wouldn't help anything to display version information on boot because running 'uname -a' on the booted system would have the same effect. In a secure boot world if you've got a way to display a version and cryptographically prove that it is not a lie, it would be used.

Probably there would be a magic key (escape or F1 or something) to make the pretty boot screen go away. In fact, I think this is the case now.

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Garrett: Secure Boot and Restricted Boot

Posted Apr 9, 2013 20:40 UTC (Tue) by paulj (subscriber, #341) [Link]

The uname -a version info the user might query would, by then, be with the kernel subverted again during (early?) boot.

Kernel info pre-boot, or kernel init might be harder to change with Secure Boot, but that doesn't get shown anymore by default. Fedora doesn't even mention version info in the default bootloader UI anymore.

Garrett: Secure Boot and Restricted Boot

Posted Apr 9, 2013 21:25 UTC (Tue) by mathstuf (subscriber, #69389) [Link]

> Probably there would be a magic key (escape or F1 or something) to make the pretty boot screen go away. In fact, I think this is the case now.

Escape will toggle Plymouth. Since it's on a TTY, pretty much any arrow or function key will generate '^[', so they all work :P .


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