CentOS

I managed to boot to from HDD using Rescue Mode, and put back into place a grub.cfg (backup) that had a matching menuentry to a kernel that was still on my system. I then was able to escalate privilege to root and remove the last kernel package installed which removed all of its associated (child) d...

@BShT, thanks. That confirms my suspicion. I know that Solaris makes it a minimum requirement along with the root (/) and /var partitions. I think what I am going to do is uninstall and reinstall the latest applied kernel packages, if I see a problem at the reboot again, I will then create a swap fi...

https://forums.centos.org/viewtopic.php?f=55&t=76144&p=320140&hilit=rhgb#p320140 BShT, I read the link, it doesn't really help. However, I was able to recover the system with an old grub.cfg copy. My coworker, before initiating the update of our system backed up /etc/grub2.cfg to /etc/grub2.cfg.bak...

BShT wrote: ↑

2021/01/12 12:35:14

try to boot verbose

Sorry, can you provide a little more context and detail, please?

We, a coworker, just upgraded our system which included a new kernel, 3.10.0-1160.13.1. Then we rebooted the machine and after selecting any entry from the grub menu, the server simply hangs. The rescue menu item also does not work. This is on a Red Hat, not CentOS, server. Any ideas what could have...

Thank you both.

I also just tried: no change in state.

I also tried using where nothing showed up there either.

I have a few servers that are running with two power supplies, and one power chord/power supply; basically two power supplies total and two power chords total. Should I not be able to use dmidecode --type 39 to determine if a power chord is unplugged, or similarly, if a power supply has been partial...

Thanks MartinR.