[earthshout]

1. This isn't the place for technical support on something that you can go to Apple to find out.

2. Search for it - https://support.apple.com/en-au/HT202796

[pvtmert]

yeah i know but some hacker shared it the thing is he was doing exactly same thing that installer does without rebooting and all other stuff

i am sure it will be helpful to other people who want to try beta without touching their stable version also...