Question / Advice regarding triple-boot Sonoma / Mojave / Win10

Hello Community!

3 years ago, I built my second hackintosh (after an El-Cap first build on an old PC that was not mine) on the following hardware (see bottom of post), and it's been running great. It's a dual-boot with Mojave (using Clover) and Windows on the secondary disk.

Now obviously, Mojave it outdated and lots of apps don't support it anymore, but I would not like to nuke it as I have some legacy applications that I still use. So I bought a new SSD, and though, hey, triple-boot!

I am reading the Open Core doc, and started downloading what I need (Sonoma, OpenCore, gathering kexts etc). But I have a lingering question about procedure:

- As I want to go OpenCore, obviously Sonoma will be my primary disk, hosting the bootloader

- My Mojave disk will become secondary, and I'll probably need to delete the EFI partition / bootloader

- Windows will just remain as is

What I'm considering doing at the top of my head is to disconnect the other disks, install OpenCore + Sonoma on my to-be main disk, then plug the other disks again, cleanup the old bootloader from the Mojave disk, and enjoy. But it might be a little too optimistic :)

/?\ Any heads up or special precautions I should take to avoid destroying the Mojave install? /?\

Most posts about triple-booting are Mac/Win/Linux (like https://www.reddit.com/r/hackintosh/comments/zewa6d/opencore_dual_boot_to_triple_boot/ or many more other often older posts),

It's a "better be safe than sorry" question in a way, perhaps also an opportunity for folks to flex their own multi-boot installs and sharing tips in this regards.

Hardware:

- Core i7-9700 (Coffeelake) / GPU Intel® UHD Graphics 630

- Sapphire 11265-05-20G Radeon PULSE RX 580

- Corsair Vengeance LPX 32GB (2x16) DDR4 DRAM 3200MHz C16 Memory Kit

- Gigabyte Z390 AORUS Elite (Intel LGA1151/Z390/ATX/2xM.2/RGB Fusion/Gaming Motherboard)

- Audio: Realtek ALC1220

- Ethernet: Intel I219V7 PCI Express Gigabit Ethernet

Thanks!!! I will post a story once my project is completed.

PS: if the "build advice" is not the right flag feel free to suggest otherwise. I considered "help", "question" and "discussion" and man was I not sure which to pick.

submitted by /u/Shlonsk
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