On 04/29/2017 06:50 AM, Gregory P. Ennis wrote: > about 4 years ago, I tried to install CentOS 6 on a Supermicro server > with SCSI drives using a LSI raid system. Red Hat does discontinue support for some storage driver for very old hardware when they start a new release series. For EL6, that list is here: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/sect-Migration_Guide-Package_Changes-Driver_Changes.html#sect-packages-discontinued-drivers https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/sect-packages-deprecated-drivers.html For 7: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/sect-Red_Hat_Enterprise_Linux-Migration_Planning_Guide-Removed_Drivers.html I did a cursory check, and don't see any drivers that were removed in 6 present in 7. Run 'lsmod' on the system you're currently running and see if you can locate the storage driver. I'm guessing it's "megaraid" which is not present in EL7.