What is your configuration? I installed windows with the ssd on the backplane before moving it onto the sled.
I think the general advice is to pull all your other drives so that only the volume you want windows installed on is present. Otherwise you risk windows installing support partitions on the wrong volumes. Create a usb installer and install windows. Once windows is running, shut down the machine and install your sled. Reboot windows and allow it to initialize the device. Then shut down and move your ssd onto the sled.
I think the general advice is to pull all your other drives so that only the volume you want windows installed on is present. Otherwise you risk windows installing support partitions on the wrong volumes. Create a usb installer and install windows. Once windows is running, shut down the machine and install your sled. Reboot windows and allow it to initialize the device. Then shut down and move your ssd onto the sled.