Basically, before you begin building your OpenCore bootloader. You gotta have a copy of MacOS recovery so you can create a bootable USB flash drive.
First, download the latest OpenCore.Pkg
Download the RELEASE version.
Now extract the .zip file and head to UTILITIES and find MACRECOVERY
Note: You need to install Python 3 for the tool to work properly. Download HERE.
Open macrecovery folder and press and hold shift button and press right click on your mouse and select open command prompt/windows power shell/terminal.
Copy and paste the MacOS version that you want to download included below is the python script code. For 6th Generation Intel (Skylake) I personally use and selected Ventura. So you can consider to start from there and just upgrade if you want to on some later time.
Lion
./macrecovery.py -b Mac-2E6FAB96566FE58C -m 00000000000F25Y00
./macrecovery.py -b Mac-C3EC7CD22292981F -m 00000000000F0HM00
Mountain Lion:
./macrecovery.py -b Mac-7DF2A3B5E5D671ED -m 00000000000F65100
Mavericks
./macrecovery.py -b Mac-F60DEB81FF30ACF6 -m 00000000000FNN100
Yosemite:
./macrecovery.py -b Mac-E43C1C25D4880AD6 -m 00000000000GDVW00
El Capitan
./macrecovery.py -b Mac-FFE5EF870D7BA81A -m 00000000000GQRX00
Sierra
./macrecovery.py -b Mac-77F17D7DA9285301 -m 00000000000J0DX00
High Sierra
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m 00000000000J80300
./macrecovery.py -b Mac-BE088AF8C5EB4FA2 -m 00000000000J80300
Mojave
./macrecovery.py -b Mac-7BA5B2DFE22DDD8C -m 00000000000KXPG00
Catalina
./macrecovery.py -b Mac-CFF7D910A743CAAF -m 00000000000PHCD00
./macrecovery.py -b Mac-00BE6ED71E35EB86 -m 00000000000000000
Big Sur
./macrecovery.py -b Mac-2BD1B31983FE1663 -m 00000000000000000
Monterey
./macrecovery.py -b Mac-E43C1C25D4880AD6 -m 00000000000000000
Ventura
./macrecovery.py -b Mac-B4831CEBD52A0C4C -m 00000000000000000
Sonoma
./macrecovery.py -b Mac-827FAC58A8FDFA22 -m 00000000000000000
Diagnostics
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m 00000000000000000 -diag
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m 00000000000JG3600 -diag
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 <real MLB> -diag
Default version
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m 00000000000JG3600 (oldest)
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m <real MLB> -os default (newer)
Latest version
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m 00000000000000000 -os latest
./macrecovery.py -b Mac-7BA5B2D9E42DDD94 -m <real MLB> -os latest
Once you have download it successfully the macrecovery folder should look like this:
There you go. You have successfully downloaded the MacOS recovery to start with.
