[SOLVED] How to revert to Mac OS X after Windows 11 install?

[meetremedy]

So there's this Macbook Pro on which we installed Windows 11.

Installed means we deleted everything - recovery partitions, and absolutely everything, so now the Mac is with Windows only and cannot open the .pkg file that comes with the OS X version.
Is there anyway I can revert back to Mac OS X?

I just cannot boot it. I don't have DVD with MAC, I have just usb flash drive that I make bootable with TransMac but it does not recognize it and I cannot install it now.

 

[USAFRet]

You presumably removed everything Apple associated.
There is nothing to "revert" to.

You would need to obtain whatever Mac OS is applicable.

 

[alceryes]

See if you can recover with an image over the internet...?
https://support.apple.com/en-us/HT201255