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I downloaded and installed the Windows 10 Technical Preview. Since then, when I hit restart it doesn't go to the multi-boot so I can choose the next bootable operating system.

Instead of booting Windows 10TP, my computer just restarts back into the original OS.

What can I do to boot into Windows 10?

FIDELIS
2014-11-01 07:56:21
Does your computer use BIOS or UEFI? What is the other operating system? This might help:http://www.howtogeek.com/197647/how-to-dual-boot-windows-10-with-windows-7-or-8/http://www.expertreviews.co.uk/operating-systems/1401617/how-to-install-windows-10-clean-install-dual-boot-or-vm/page/0/1
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Susendeep.D
2014-11-01 07:15:08
Which is the other OS you're dual booting with ? If doing with Linux,then you'll need to install Windows 10 first.Have a read on the below article - How to Dual-Boot Windows 10 with Windows 7 or 8If you still face some problems,then download EasyBCD by clicking on the download button(no registration required) .If still you face problem,then try testing it under Virtual machine.Also,have a look at the below article -3 Easy Ways To Install Windows 10 Technical Preview