Windows 10: Dual boot 10 & 7 BIOS/UEFI possible issues

I dual boot to 2 different windows 7 installs. I have my primary for day to day stuff and the second install is for my DAW. I don't want to update the DAW to 10 because of the issues it may cause. I do want to update my primary install to 10. Can this be done or will I run into issues since the DAW install is BIOS?

My motherboard does have a Legacy and UEFI mode.

:)

 

Fall Creators update kills bootloader on dual boot systems

My system is a regular BIOS system, it is not UEFI. My current motherboard is UEFI capable, but since the dual boot configuration was originally Windows 7 & Kubuntu, I have kept it a BIOS system. Every single major upgrade has clobbered the dual boot configuration
in one way or another: Win 7 => Win 8.0, Win 8.0 => Win 8.1, Win 8.1 => Win 10 version 1507, 1507 => 1511, 1511 => 1607, 1607 => 1703, & 1703 => 1709.

 

Dual boot screen

Hi, I have a chinese tablet Cube iwork 10. It comes with a UEFI and GPT system. AMI Motherboard. Originally brought Android and Windows 10, I deleted the Android sys. and reinstalled win 10. The first time, doing some configurations on the bios (UEFI)
I got the boot: first the screen of American megatrends, AMI, and then, the windows 10 boot. I managed to eliminate the Cube boot in Chinese and the annoying dual boot android-Windows.

For this reason, I think that configuring the bios (UEFI) in this way is possible. Unfortunately I lost the configuration I achieved, and I was never able to get it again. I have reinstalled at least 6-7 times win 10 without the result I want.

The specific question is: How can I delete Windows boot manager or Windows boot loader code (s) to definitively remove the Cube Chinese logo and dual-boot Android-Windows option ???

In advance,

Thanks a lot!!

FE.