Never prompted for Intel Raid Control-I

Pacceka wrote: Z97 Extreme4 Bios 2.5 (Also tried 1.8) I set the SATA type to RAID. With the CSM storage option rom set to legacy only I receive no prompt to press control-I. Pressing control-I also does not invoke the intel raid configuration utility. I set the CSM storage option rom to UEFI and when I reboot and enter the bios I can see the Drive listed as a non-raid physical drive. I do not have any option to convert it to raid.  This drive was AHCI and is now reformated ready to be made raid.

You won't be prompted to press Ctrl-i during POST unless you have the AddOn ROM Display option set to Enabled in the UEFI/BIOS, Boot screen.

Did you install your unknown version of Windows with the SATA mode set to RAID? Changing to RAID mode after installing Windows in AHCI mode may not always work. Windows may not automatically install its built in Intel RAID driver when it boots after you change the SATA mode from AHCI to RAID. That's the main problem when attempting to change from AHCI to RAID mode.

Depending upon the version of Windows you are using, the older it is (Windows 7) will have a much older built in Intel RAID driver than newer Windows versions. The Windows 10 built in Intel RAID driver version will be about right for a Z97 chipset board.

Or did you install the Intel IRST RAID driver and utility package from your board's download page, or from Intel's download pages? You will most likely need to install the Intel RAID driver and utility package yourself if you installed Windows in AHCI mode, and later changed to RAID mode. You must have an Intel RAID driver installed or any Intel RAID array will not work.

If you install the Intel driver and utility package for Windows, you can create a RAID array using the Intel IRST utility in Windows.

But most important, how do you expect to create a RAID array out of one unformatted drive? That cannot be done, and is why you were not offered any RAID array creation option.

Also, what type of RAID array do you want to create? RAID 0, 1, 5, or 10?

A standard RAID 0 or RAID 1 array requires at least two drives. A RAID 5 or RAID 10 array requires more that two drives.

If you have a single drive formatted and configured into two partitions, each assigned a disk letter, then you may be able to create a RAID 0 array out of the two partitions. But that is not the usual way to use RAID.

Your unknown drive, or any drive cannot be simply "made RAID", it does not work that way.

You can create a RAID "array", which means multiple drives are used together for a certain purpose. The type of RAID array is chosen for the intended purpose, performance, redundancy, mirroring, or a combination of those.