Re Step 1 (a wee bit off-topic: UEFI installation of Windows 8.1 fails in some UEFIs) I found and reported a bug in Asus Z97 UEFI BIOS v. 1008 (05/29/2014): it does not permit installation of a standard/OEM Win 8.1 .iso on a GPT drive, which you'll need to do if your boot drive is > 2TB. Problem: Win 8.1 .iso necessarily contains both bootldr and bootldr.efi files. Even if you F8-boot Win 8.1 DVD with UEFI(FAT)OpticalDrive and select a GPT-initialized target drive, UEFI BIOS 1008 sees the bootldr file and runs it (failing in Setup) without first checking for bootldr.efi and running it. I resolved this problem by creating a GPT USB (FAT32) flash drive and simply deleting the bootldr file(cf.How to create UEFI bootable USB to install Windows 8.1). Now I have UEFI boot SSD for Win 8.1+Apps: several advantages over MBR-formatted boots! BTW: if your target drive is already GPT-initialized, ignore Microsoft's OEM-warning that the partition order is not the recommended one: you'll get the same GPT partition-order as for an uninitialized installation drive: 300 MB NTFS MS Recovery, 100 MB FAT32 EFI System, x GB NTFS (C:)
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Re: Which IRST RAID driver will let me load Windows 8.1 Pro 64-bit on Asus Z97-WS and RAID 1 array?
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