CentOS

Have you tried powering the machine down completely and removing the power lead from it for 30s or so? Hardware does sometimes go off into limbo and needs that sort of thing done to it to resuscitate it!

A comment from your getinfo output... rpmforge-release-0.5.3-1.el6.rf.x86_64 - don't use rpmforge. It's been unmaintained for about 7 years now and a lot of the packages in it are now riddled with security problems and should be avoided. I would suggest that you undo everything that you've done and ...

Why would you try to convert it from a Debian package to a CentOS one when it already exists as a native CentOS package in the EPEL repo? Don't.

yum install epel-release
yum install chrome-remote-desktop.x86_64

You can find a packaged version of zabiix in the EPEL repo as zabbix40.x86_64 4.0.16-1.el7 epel Packages are preferred to e.g. source installs. As for the mysql command, you need to run yum install mysql and it will find and install the mariadb package for you and this contains the mysql executable ...

What's the output from grep -ir exclud /etc/yum.* and from yum list ibutil\*

I'd recommend writing to one of the CentOS mailing lists to ask this. No-one who has any idea about when this might be fixed ever reads these forums.

You have to make sure your disk, whatever it is, is formatted with a filesystem that is accessible to both operating systems. Windows understands FAT in all its many variants and NTFS. Linux understands ext2, ext3, ext4, xfs, and FAT in many variants. Your disk will need to use one of the FAT format...

Works for me here when I test it. Post all of the output from the yum command that you ran, right from the command prompt where you entered your yum command, right the way through until the command prompt returns so we can see it all.

As root: dmidecode -t 0

There is one thing I thought about. Dell's are very particular about the SR-IOV setting which is set in two different places and needs to agree in both locations or weird stuff happens. There is an SR-IOV setting in the main BIOS setup itself and then there is a setting per card that you have to get...