#Remove extfs for mac install
#Remove extfs for mac update
#Remove extfs for mac download

#Remove extfs for mac install

It is best to mount the EFI partition of the USB install disk or any other target disk, then choose that EFI volume.

We begin by clicking Select Folder to choose an output folder.

#Remove extfs for mac update

We can always update an SSDT with a new version but prevent it from being injected by setting Update to true and Enable to false.

This is equivalent to the 'Enable' flag in OpenCore ist.

The Enable column determines whether any particular SSDT should be injected into the system during boot.

This controls whether the physical file is copied.

The Update column determines whether an existing SSDT should be updated if a newer version is present in the new EFI folder.

SSDTs that are only in the new folder will be added.

SSDTs that are in both the old folder and new folder will be replaced with new version if it has a new date/time stamp.

SSDTs that are only in the old folder but not in the new folder will be kept.

It does not simply delete everything in current folder and replace it with files from new folder.

The app tries to merge SSDTs from the current and new EFI folders.

Now we review each of the remaining sections and make any adjustments we might need.

This will save precious space in the EFI partition.

Click Custom folder for EFI Backups and select a different disk and folder.

Fortunately, we can tell the app to store backups to a different disk.

However, EFI partitions are only 200MB, which means there might not be enough space left in some cases (especially when using OpenIntelWireless drivers). By default the backup will be stored on the same disk.

The app makes a backup of the current EFI folder before updating OpenCore.

We have also selected the Motherboard, GPU, and WiFi module we are using.

In the second screenshot below, we have elected to enable Notifications and to hide the window when mouse is clicked outside the window.

Also select GPU type (AMD or iGPU) and WiFi type (Broadcom or Intel).

Please select motherboard vendor and motherboard model from the two pop-up menus.

The screen shown below will appear in which various preferences can be specified via the checkboxes, and the system configuration must be specified.

Go to System Preferences -> Security & Privacy -> General and allow macOS to launch the app.

MacOS will show standard warning about unknown developer. Copy the app to your Applications folder and launch it.

#Remove extfs for mac download

Download HackinDROM App from as shown below.Now the USB flash disk can be an emergency boot disk.

Then copy current EFI folder to the EFI partition of USB flash disk. This can be done by formatting the USB flash disk in Disk Utility with Format=MacOS Extended (Journaled) and Scheme=GUID Partition Map.

It is always a good idea to make a backup of the EFI folder to a USB flash disk. This illustrated mini-guide walks us through the entire process. Fortunately, has developed a wonderful little app that does all of the work for us. This is a good thing, but updating our EFI folders at such a high frequency can become tedious and error prone. New versions of OpenCore are currently being released every month.

If your system does not have functioning Bluetooth, please use v1.4.3 of the app or newer.

Building a CustoMac Hackintosh: Buyer's Guide