On 7/30/20 7:43 PM, Anshu Prateek wrote:

Hi folks,

I am able to install workstation successfully on a dedicated SSD w/ GPT partition w/ UEFI boot using the latest `CentOS-8.2.2004-x86_64-dvd1.iso` from a bootable pen drive.

The motherboard is ASRock x570 Gaming 4 ( https://www.asrock.com/mb/AMD/X570%20phantom%20Gaming%204/index.asp) w/ Ryzen 3600, 16G RAM, 1TB SSD in question.

However, after login, when I do a DNF update (which is updating the kernel presently) and then do a reboot, I don't see the grub2 screen anymore. I end up on a blank screen. Tried fixing grub2 via recovery method, no luck.

Tried this couple of times, i.e, fresh install then dnf update, always ended up with the same result.

In my latest reinstall, I did not format the boot and EFI partition, and after it came up post the reinstall, I could see the upgraded kernel entry from the last install in the grub menu.

Thoughts on what could be causing this and how could I fix it?

I'm running CentOS 8.2 on an Intel NUC, and also hit this this morning.  The way I was able to workaround this was to copy grub2-* and shim-* RPMs from the CentOS 8.2 installation media and use "rpm -Uvh grub2-* shim-* --oldpackage".  The subsequent reboot worked normally.  The versions of those packages on the 8.2 installation media was the same as what I had installed immediately before this morning's upgrade.

-Greg

Now wondering if it’s due to this issue -

https://bugzilla.redhat.com/show_bug.cgi?id=1861977

Have installed fedora for now, will see if want to reinstall centos8.

On Fri, Jul 31, 2020 at 08:13 Anshu Prateek anshprat@gmail.com wrote:

Hi folks,

I am able to install workstation successfully on a dedicated SSD w/ GPT partition w/ UEFI boot using the latest `CentOS-8.2.2004-x86_64-dvd1.iso` from a bootable pen drive.

The motherboard is ASRock x570 Gaming 4 ( https://www.asrock.com/mb/AMD/X570%20phantom%20Gaming%204/index.asp) w/ Ryzen 3600, 16G RAM, 1TB SSD in question.

However, after login, when I do a DNF update (which is updating the kernel presently) and then do a reboot, I don't see the grub2 screen anymore. I end up on a blank screen. Tried fixing grub2 via recovery method, no luck.

Tried this couple of times, i.e, fresh install then dnf update, always ended up with the same result.

In my latest reinstall, I did not format the boot and EFI partition, and after it came up post the reinstall, I could see the upgraded kernel entry from the last install in the grub menu.

Thoughts on what could be causing this and how could I fix it?

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