Changes

# VMware on Linux requires Secure Boot to be disabled on the Linux host otherwise VMware cannot run CentOS VMs: [ [https://communities.vmware.com/message/2461448#2461448 Comment #5 talks about disabling Secure Boot to make VMware on Linux boot VMs] ].

# It appears that doing yum update after May 2018 reintroduces the GRUB issue mentioned in '''#3''' of '''Fall 2017''' below for removable HDD on HP machines. A possible solution, since the one proposed in the earlier solution does not work, might be (to be confirmed whether the solution linked to here resolves the issue) https://noobient.com/post/165797742756/fixing-the-efi-bootloader-on-centos-7