The "NK _" is trying to boot a UEFI boot ROM in a BIOS boot mode. The utility is only supported on UEFI.  There is a DOS utility that you could use if you don't want to change your boot mode. Change your BIOS setting from BIOS to UEFI for boot mode and the "NK" won't appear anymore. 
Hi, I have a Power Edge 2950 with a RAID 10 array where a disk has failed. I have obtained a replacement disk (a Seagate ST3146855SS 10k RPM SAS) but when I check OMSA it says "Unsupported" against my replacement disk. I've noticed the "Revision" field on the existing disks is T107 and T106 on my replacement disk, so I suspect this is the cause. How can I update it from revision T106 to T107?
How to upgrade a HD to revision T107