Have you tried to delete the existing partition during the installation? I se you allready have a system partition.
I've installed windows 8.1 two times allready without any problems.
Try do delete the partition so you end up with "unnallocated space" and then press next. This will delete everything on the ssd.
Hello Rafita, I’m sorry to hear that you are having issues with the installation of the Operating system on your NUC.
We have installed Windows 7, 8 or 8.1 on the same model number without issues. The installation could be done using AHCI or RAID mode on BIOS. It does not have to be especially on AHCI.
As AlexanderR suggest, I would recommend you to try a low level format of the drive where you are going to install the operating system.
Try accessing the BIOS and make sure the NUC is recognizing the mSATA correctly.
Please let me know the results.
As you can see in this picture, yes the bios recognizes correctly msata and also AHCI mode is selected.
After many tests, just let me install the OS in ACHI mode with this configuration.
Boot--> Boot Configuration --> UEFI Boot --> check Boot USB Device first --> Boot Devices --> check USB.
Thus let me install in AHCI mode, finally recognized the msata. To check and make sure this was the problem, I went back to the BIOS and remove the "check" marked above, and if you could try installing again failed to recognize me again msata and give the message of yore. So install as I mentioned above. To finish installing Win 7, I had to remove the two "check" because when you reboot, loaded directly from the USB.
Why it works this way? I have no idea, lost a lot of time and head pain.
Rafita, I was not able to see the pictures you attached to your post.
Regarding this behavior, I am not sure why did you had so much trouble installing the operating System.
I was able to install Windows 8 on my NUC without problems. I really apologize for the inconvenience.
You may want to check if you need a BIOS update. If you continue having issues you could contact our warranty team and replace the unit. http://www.intel.com/p/en_US/support/contactsupport