Recently I was having issues with random network disconnects. After much troubleshooting, it was determined that it was due to a weak signal to my house. The issue is in the process of being resolved, but now after debates on whether to replace the motherboard and/or add another hard drive for Windows 7 for dual-booting, I figured that the cheapest option for installing a backup OS is to keep my current drives intact, but upgrade my Windows 8.1 to Windows 10 and keep Windows 10 insider build (technical preview) on my HDD as an alternate Windows 10. Knowing that the insider build will be updated to the release version on July 29, as long as I remain a Windows Insider, could I safely keep the insider build on the secondary hard drive while using the primary Windows 10 license on my primary hard drive and boot to the insider version upon demand?