Difference between revisions of "Grub Boot Hole Crash"
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I was hit with the BootHole patch crash<ref>https://arstechnica.com/gadgets/2020/07/red-hat-and-centos-systems-arent-booting-due-to-boothole-patches/</ref> on my personal server. Before I really knew what to do about it I had destroyed my boot partition trying to recover. The official steps from Red Hat<ref>https://access.redhat.com/solutions/5272311</ref> is to downgrade grub, shim, and mkotuil, then exclude them from updates. Though they quickly released a fixed shim file<ref>https://access.redhat.com/errata/RHBA-2020:3262?sc_cid=701600000006NHXAA2</ref> | I was hit with the BootHole patch crash<ref>https://arstechnica.com/gadgets/2020/07/red-hat-and-centos-systems-arent-booting-due-to-boothole-patches/</ref> on my personal server. Before I really knew what to do about it I had destroyed my boot partition trying to recover. The official steps from Red Hat<ref>https://access.redhat.com/solutions/5272311</ref> is to downgrade grub, shim, and mkotuil, then exclude them from updates. Though they quickly released a fixed shim file<ref>https://access.redhat.com/errata/RHBA-2020:3262?sc_cid=701600000006NHXAA2</ref> | ||
| − | + | <br> | |
| + | <br> | ||
| + | Before I knew what was going on I got frustrated and deleted the contents of my /boot, figuring I needed to learn how to recover this kind of failure. Then I went through the process. | ||
| + | *First I booted off install media and entered into recovery. | ||
| + | *Then I bound the install media to sysimage | ||
| + | <pre> | ||
| + | mkdir /mnt/sysimage/install | ||
| + | mount --bind /mnt/install/repo/BaseOS /mnt/sysimage/install | ||
| + | chroot /mnt/sysimage/install | ||
| + | </pre> | ||
| + | *I then removed all the old kernels, leaving just the latest one available to me. | ||
<pre> | <pre> | ||
set root=(hd0,gpt2) | set root=(hd0,gpt2) | ||
Revision as of 08:35, 3 August 2020
I was hit with the BootHole patch crash[1] on my personal server. Before I really knew what to do about it I had destroyed my boot partition trying to recover. The official steps from Red Hat[2] is to downgrade grub, shim, and mkotuil, then exclude them from updates. Though they quickly released a fixed shim file[3]
Before I knew what was going on I got frustrated and deleted the contents of my /boot, figuring I needed to learn how to recover this kind of failure. Then I went through the process.
- First I booted off install media and entered into recovery.
- Then I bound the install media to sysimage
mkdir /mnt/sysimage/install mount --bind /mnt/install/repo/BaseOS /mnt/sysimage/install chroot /mnt/sysimage/install
- I then removed all the old kernels, leaving just the latest one available to me.
set root=(hd0,gpt2) linuxefi /vmlinuz-4.18.0-193.14.2.el8_2.x86_64 root=/dev/mapper/OS-root initrdefi /initramfs-4.18.0-193.14.2.el8_2.x86_64.img relabled, rebooted, did again.
