On Sun, 2 Aug 2020 at 18:13, Robert G (Doc) Savage via CentOS <centos@centos.org> wrote: > > -----Original Message----- > From: Stephen John Smoogen <smo...@gmail.com> > Reply-To: CentOS mailing list <centos@centos.org> > To: CentOS mailing list <centos@centos.org> > Subject: Re: [CentOS] 8.2.2004 Latest yum update renders machine unbootable > Date: Sun, 2 Aug 2020 10:57:49 -0400 > > On Sun, 2 Aug 2020 at 10:20, david <da...@daku.org> wrote: > > > <snip> > > I agree it is a lot of shorthand because of expectations. In the endwe (the > list) don't know what you have on your system or what state itis in. In order > to get that information to help we would need you totry the following: > 1. boot using a working USB/cdrom/netboot path and installer2. choose the > rescue mode3. have the rescue mount the disks as local and chroot into > thesystem. << if possible have the system also bring up networking >> > Thenyum list kernel shim grub2 mokutil > John, > > > I have a CentOS 8.2.2004 system running on an EPYC-equipped SuperMicro > motherboard. I assume it uses EFI boot. I have it set to auto-update with > cron.daily, so it almost certainly has the buggy package(s) installed. I'm > loath to try rebooting it just to see. >
The buggy package is the shim package. If you don't have it on your system then you should not be affected. > > When I run "yum list kernel shim grub2 mokutil" all I get back are the three > installed kernel packages. Reverting to the old fashioned "rpm -qa | grep > kernel-4 ; rpm -qa | grep shim ; rpm -qa | grep grub2 ; rpm -qa | grep > mokutil" I get: > > > kernel-4.18.0-147.8.1.el8_1.x86_64 > kernel-4.18.0-193.14.2.el8_2.x86_64 > kernel-4.18.0-193.6.3.el8_2.x86_64 > grub2-tools-2.02-87.el8_2.x86_64 > grub2-pc-2.02-87.el8_2.x86_64 > grub2-pc-modules-2.02-87.el8_2.noarch > grub2-common-2.02-87.el8_2.noarch > grub2-tools-efi-2.02-87.el8_2.x86_64 > grub2-tools-minimal-2.02-87.el8_2.x86_64 > grub2-tools-extra-2.02-87.el8_2.x86_64 > > > I apparently do not have either shim or mokutil packages installed. I'm not > sure what this means. Am I not using EFI boot? > > use the df command. If you are using EFI then it will report /boot/EFI as a partition. If it doesn't then I would assume you are using BIOS. > I have local copies of the earlier v2.02-81 grub2 packages. Would it be > worthwhile to replace my v2.02-87 grub2 packages, then add this line to > /etc/dnf/dnf.conf: > > > exclude=grub shim mokutil > > > as previously advised? > Since the problem is the shim package and you don't seem to have it.. I would say exclusion is not needed. > > Or should I just leave well enough alone and wait for tonight's auto-update > to fix things? > > > --Doc Savage > Fairview Heights, IL > > > > > > > > > _______________________________________________ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos -- Stephen J Smoogen. _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
