Creating an installer on MacOS doesn't create EFI partition

[CandyManOfficial]

I was following the guide to creating an installer in MacOS, which downloaded without incident. The only problem is that it created a disk image called "Shared Support". My actual disk (which is called Install MacOS Ventura) doesn't have an EFI partition whereas "Shared Support" does. The EFI partition on Shared Support appears to be a read only file system so I can't make an EFI folder for it. How can I resolve this? I can't seem to change the permissions of Shared support...

 

[EliteMacx86]

I was following the guide to creating an installer in MacOS, which downloaded without incident. The only problem is that it created a disk image called "Shared Support". My actual disk (which is called Install MacOS Ventura) doesn't have an EFI partition whereas "Shared Support" does. The EFI partition on Shared Support appears to be a read only file system so I can't make an EFI folder for it. How can I resolve this? I can't seem to change the permissions of Shared support...

Re-download the installer and use the correct parameters to erase the drive.

Read here:

GUIDE - How to Boot macOS Installer on Desktops and Laptops using OpenCore [UEFI/Legacy] - OpenCore Install Guide

How to Boot macOS Installer on Desktops and Laptops using OpenCore [UEFI/Legacy] - OpenCore Install Guide Booting the OS X/macOS installers on a non-Apple computer can be challenging for new users. This guide is intended for those who wish to use OpenCore as a Bootloader and it covers a...

elitemacx86.com

 

[CandyManOfficial]

Re-download the installer and use the correct parameters to erase the drive.

Read here:

GUIDE - How to Boot macOS Installer on Desktops and Laptops using OpenCore [UEFI/Legacy] - OpenCore Install Guide

How to Boot macOS Installer on Desktops and Laptops using OpenCore [UEFI/Legacy] - OpenCore Install Guide Booting the OS X/macOS installers on a non-Apple computer can be challenging for new users. This guide is intended for those who wish to use OpenCore as a Bootloader and it covers a...

elitemacx86.com

Same problem unfortunately.

 

[EliteMacx86]

Same problem unfortunately.

Which method are you using to download the installer and create the Bootable USB?

 

[CandyManOfficial]

Which method are you using to download the installer and create the Bootable USB?

From the app store on my macbook. I then used the createinstallmedia command from the guide. To be honest, I think this problem may just be something with my flash drive itself. I don't know why it won't create an EFI partition.

 

[EliteMacx86]

From the app store on my macbook. I then used the createinstallmedia command from the guide. To be honest, I think this problem may just be something with my flash drive itself. I don't know why it won't create an EFI partition.

Could be possible. Try with another USB Flash Drive and another USB Port. Make sure to verify the installer size.

The parameters you should use:

USB
HFS+
GUID Partition Map

Unless you select GUID Partition Map as a Scheme, it will NOT create a hidden ESP.