Guys I need help, I can't install. Tells me my Reserved Partition couldn't be updated. I don't understand. My laptop meets all the requirements and currently on Windows 8.1 update 1. Please help, wanna be part of the preview :'(
I would still clean and delete the partition you have now and build a new one so Win 10 has a fresh partition to work with. I think that might make your problems go away.