Hi,
1. To install RAID can be a challenge.
2. To use >2TB disks with GPT partitions to boot your system can also present some difficulties if not done right.
3. To use UEFI booting instead of the old BIOS is absolutely rocket science. To the point that the Anaconda installer will crash when trying to write the boot loader config on the disk, at least on my ASUS motherboard based PC. (That is why I market this post as a Bug)

Now, combine all three above and you can look forward to hours behind the keyboard before you finally give up (or succeed). Well, two weeks ago I decided to try just that.

Today, I finally made it (I think...). Not sure what will happen at the next kernel update, but hopefully it will work. To give any other some hints on what to do if you would like to try this. Here you find some info:

Background: I have three 3 TB disks and an ordinary x86-64 PC, with UEFI enabled motherboard, that I run as "home server". The CPU load as well as the disk load is moderate at worst. I want RAID to have some fault tolerance, but also want maximum space for storage. I therefore decided to have RAID 5 for the root file system and RAID 1 for boot and swap. I prepared a USB-stick with the installation ISO using a Linux-system (See instructions on this site).

Note: When installing for UEFI, the installation media MUST be booted using UEFI (not by bios). In your "bios"-screen setup, your installation media should have a name similar to [UEFI]:my-usb-stick .

Note2: At least on my system, the installation will fail if I select to have the boot loader installed automatically. It may my ASUS motherboard that has some bugs in the firmware that causes this, I do not know. But I do have the lastest firmware installed.

Note3: When dealing the UEFI and GPT there are a number of things that changes from "how it always has been done". For instance, DO NOT use grub-install ! It will kill your setup if I understand correctly. Instead you should use grub2-mkconfig. Also, the files ends up in different directories, why following different advices on the Internet is not always a good idea...

Installation:

Done !

Your system shall now be possible to boot from any of the three drives using UEFI.



Hopefully you find this long post useful. Please note that I am everything but an expert in this field, and the above could be "NOT a good way" to configure your system. You have been warned.

/Fred