CentOS

Have you installed the proprietary nvidia or AMD graphics drivers?

Why are you using a CentOS 6 yum repo on CentOS 8. Don't. They are not compatible. Disable it or remove it.

I haven't looked at your files but in situations like this it is possible you're hitting denials that are also 'dontaudit' rules. So what I think you should do is uninstall your existing selinux policy run `service auditd rotate` to rotate your audit log files, maybe delete or move the /var/log/audi...

Boot from rescue media and run xfs_repair from there.

Obligatory Google Translate:

Good, my English is not very good.
I have this problem, by repairing with XFS_repair /Dev /Sda1, it is ok, but you persist the problem, which could do the most to advance in that error.
Greetings

Both rufus and I think balena are known to have problems with the hybrid isos that CentOS uses. Check teh link in my sig to the wiki article about what utilites are safe to use.

If you have no backup then you have most liklely lost those fles. If you want to attempt to recover them then you should STOP using the system immediately and shut it down. Now find some recovery media - perhaps systemcrescuecd - that includes a utility called photorec. This can attempt to recover d...

CentOS/RHEL do not generally ship the latest of everything but instead RH cherrypick the updates that should be backported to the version that RHEL ships. You can check the rpm changelog using e.g. `repoquery --changelog httpd-2.4.57-5.el9 | less` or visit the RH CVE pages for a longer explanation o...

Use `journalctl -u network` to see messages older than the ones that you see using status.

Because 7.5 - 7.8 are outdated and have been moved to vault. 7.9 is the current version and is on the CentOS mirror network, not on vault (because it's still alive). Around about July this year after 7.9 goes EOL, it too will get moved to vault.centos.org.