Windows Install

Andrew@Chang wrote:

1. Is it OK to format the internal SSD and install windows on the “only SSD”? Will I get some problems?

The EFI partition behaves differently when using Windows. It may be easier to create a small (32GB) OS X and use the rest for Windows.

2. I already install windows on my SSD and there is no partition, when the Macbook finished installing Windows using Boot Camp my screen got a black screen during I install the driver after I log into Windows, What happen to my computer can I still have Windows on my “No partition SSD disk”?

This specific problem is one of the reasons, OS X is useful to have on the internal disk. If Windows does not work for any reason, OS X switching can allow access to the Mac. What was the version of Windows you attempted to install? Did you use a USB or an Optical drive?

W10 is not officially supported on 2011 Macs as noted in Use Windows 10 on your Mac with Boot Camp - Apple Support . There are no Apple certified drivers for W10 on 2011 Macs. If you installed incorrect drivers, it can cause issues with the GPUs and can result in a black screen.

Can you use About OS X Recovery - Apple Support to boot into Internet Recovery?

Try Windows Safe Mode, if that does not, you may have to use Internet Recovery and re-install OS X.