Grub2 updates for Red Hat systems are making some unbootable [LWN.net]

Grub2 updates for Red Hat systems are making some unbootable

Posted Jul 30, 2020 16:55 UTC (Thu) by cesarb (subscriber, #6266)
Parent article: Grub2 updates for Red Hat systems are making some unbootable

According to comments on the HN post (https://news.ycombinator.com/item?id=23999212), this is also affecting at least Ubuntu and Debian: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509

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Grub2 updates for Red Hat systems are making some unbootable

Posted Jul 30, 2020 21:54 UTC (Thu) by hmh (subscriber, #3838) [Link] (1 responses)

The Ubuntu issue seems to be an already broken setup that is not properly detected, and thus grub-install fails. You end up with the old grub in EFI, and the new grub modules in /boot. If the two don't like each other, the system fails to boot.

Debian had a regression related to dual-booting Microsoft Windows. It has already been fixed, the regression-fixing packages are ready, and the Debian security team tells me the regression-fixing update is already going through the EFI-signature-and-final-upload pipeline (no idea how long that takes, though).

Hopefully all distros will converge on the regression-fixes very fast...

I am not rebooting my EFI systems for a few days if I can help it, though :-P

Grub2 updates for Red Hat systems are making some unbootable

Posted Jul 31, 2020 1:53 UTC (Fri) by geuder (subscriber, #62854) [Link]

I updated Ubuntu 16.04 (no secureboot) and 20.04 (secureboot) yesterday. No problems.