Help required for dual booting (Laptop / i7-8750H / Intel UHD 630 & Nvidia GTX 1050 / 2 hard drives)

Hello, so I've managed to successfully install Big Sur via this guide , to a partition of my second Hard Drive on my laptop which is an HDD with opencore. After that, I installed Windows 10, on my main SSD drivers on my laptop.

The thing is, now that I've installed Windows 10, I can no longer boot to MacOS, as I'm not given such option.

I want to be able to choose which OS to boot when my Laptop first boots up, can anyone help me with dual booting?

submitted by /u/hausofgeorge
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