I have been trying to duel boot Windows 10 & Windows 10 Insider but it hasn't worked. First I have a licenced, upgraded version of windows 10 that I clean install using the auto activate feature, this means I do not delete or format the partition, does this matter? After clean installing full version of windows 10 I install the Insider version. I do the installation skipping licence keys if they are asked for so I can activate Insider later and after completing this I realise that the first version of windows 10 can no longer be booted to, it goes straight to the Insider build.
Any help?
Any help?