I tried up dating to Zorin 18 core from Zorin core 17.3. It seemed to install just fine. But on power up or reset. I do not get the boot up option like I did with 17.3. It goes straight to Zorin. I tried using the machine boot option, but I get a black screen. Then after a few seconds it starts Zorin. I am able to enter the try mode from the flash. it looks like the Widows files have not been damaged.
Also not a problem, but I created a folder to store my data in the Windows Partition. But when I run Windows the folder is hidden.