Dual boot issue

Sayak Sarkar

Honorable
May 16, 2014
15
0
10,510
So here's the situation...
I have Dual Boot -
Windows 10 on an SSD, and Windows 7 on an HDD...
I use 10 on regular basis which is running on AHCI according to my BIOS setting.
Now i cant boot up windows 7 without switching to IDE in BIOS every time. I get BSOD and bootloop when i try running 7 in AHCI.
Now i heard that enabling Legacy in BIOS solves this issue, but i cant find a similar option anywhere in my BIOS. I provide here 2 screenshots of my BIOS, i can provide more if required -

IFyzUAQ.jpg

0cFQ5Ss.jpg
 
Solution
When you install Windows in IDE mode, if it is set to AHCI afterwards it will not boot. There is a reg key you can change in Windows 7
https://winaero.com/blog/switch-from-ide-to-achi-after-installing-windows-7-or-windows-8/