Lenovo Y540 (Lenovo Legion Y540-17IRH) Working W/Catalina

After seeing this thread about a successful Y540 install and being unable to do so myself, I offered to pay for some help. Was PMed by another member who agreed to give me a hand. For anyone else with this laptop, hopefully this helps you as well.

Laptop Configuration: Y540, 17", RTX 2060, 512 NVMe, 16GB of ram

TL;DR: IF YOU HAVE THIS LAPTOP AND YOU ONLY READ ONE THING IN THIS POST, THE PROBLEM IS THAT YOU CANNOT INSTALL ON AN NVMe DRIVE. If you simply install an SSD into the sata slot, a vanilla install basically installs without a hitch.

I ran in circles for days with this thing, unable to get it to install until I was instructed to install an SSD in the sata slot of the laptop. Once I did that, the install went smoothly.

Instructions:

• download Clover's Install Package

• download This EFI package

1. run clover installer and select your USB drive. Note, USB-C drive did not work for me. Needed to be a regular USB drive. I used the rear port the entire time, and a USB 3.1 drive, but I don't think it matters. You can skip any kexts or whatnot, you'll be replacing them all anyway.
2. run clover configurator and under tools on the left hand side, select Mount EFI
3. find your newly clover'd USB drive and click mount partition on the right hand side.
4. It should have opened a new window that shows your EFI folder. Unzip the EFI package you downloaded above, and drag all contents over. When prompted, select "replace" for everything.
5. reboot, and mash (i forget, f11? f10? i just mash f9-f12 repeatedly on boot lol) and select your usb drive.
6. pick install OSX from the menu, and you're good to go.
7. after you've finished installing, open a terminal and run sudo sh -c "$(curl -fsSL https://gitee.com/xiaoMGit/Y7000Series_Hackintosh_Fix/raw/master/Script/Optimize.sh)"
8. reboot

After that, everything with the exception of wifi and bluetooth will be working. There is an occasional glitch in which there is no sound devices found. No idea how to fix this, when it happens i simply restart.

Now. Question for the audience: I have windows installed on my NVMe, and OSX on my SSD. If i boot normally, it goes into windows. To get it to boot into OSX, i have to use the USB. How do I fix this? I'd ideally like not to have to have the USB in to boot. I was told to just copy my EFI folder from the EFI partition on the USB to the EFI partition on my SSD, but that ended up bricking the boot and I had to reinstall completely.

Anyway, cheers!

EDIT: BIOS settings: https://i.imgur.com/L3999YC.jpg https://i.imgur.com/25Bon70.jpg https://i.imgur.com/gGfLuru.jpg