Macos El Capitan Usb Installer



  • Supported version: 0.6.7
  1. Os X El Capitan Bootable Usb Installer
  2. Create Mac Os X El Capitan Usb Installer
  3. Mac Os X El Capitan Usb Installer Download
  4. Mac Os El Capitan Clean Install Usb

Note: the El Capitan installer must be in the Mac's root application folder for this to work as the terminal command goes there to get it. Also the Flash drive must be formatted with a GUID partition to boot the OS (El Capitan on Flash boot drive). STEP 1: Download macOS Mojave The full operating system is a free download for anyone who has purchased Mac OS X Snow Leopard, Lion, or Mountain Lion or has a Mac preloaded with OS X Mavericks, Yosemite, El Capitan, macOS Sierra, or macOS High Sierra. Download the Application from the Mac App Store using your Apple ID on any of these specific.

While you don't need a fresh install of macOS to use OpenCore, some users prefer having a fresh slate with their boot manager upgrades.

To start you'll need the following:

  • 4GB USB Stick

  • For USB larger than 16 GB to format in FAT32 use Rufus method

    • This will require Python installed(opens new window)

Os X El Capitan Bootable Usb Installer

# Downloading macOS

Create Mac Os X El Capitan Usb Installer

To grab legacy installers is super easy, first grab a copy of OpenCorePkg(opens new window) and head to /Utilities/macrecovery/. Next copy the folder path for the macrecovery folder:

From here, you'll want to open up a Command Prompt and cd into the macrecovery folder that we copied earlier:

Now run one of the following depending on what version of macOS you want(Note these scripts rely on Python(opens new window) support, please install if you haven't already):

Macos El Capitan Usb Installer
  • macOS 11, Big Sur Note: As this OS is quite new, there's still some issues with certain systems to resolve. For more information, see here: OpenCore and macOS 11: Big Sur
    • For first time users, we recommend macOS 10.15, Catalina
  • Nvidia GPU Note: Reminder to verify whether your hardware support newer OSes, see Hardware Limitations

This will take some time, however once you're finished you should get either BaseSystem or RecoveryImage files:

BaseSystemRecoveryImage

Now with our installer downloaded, we'll next want to format out USB.

# Making the installer

Here we'll be formatting our USB and adding macOS onto it, we have 2 options:

  • Disk Management method
    • GUI Based, simplest way
    • Only UEFI systems are supported(ex. 2012+)
  • Rufus method
    • GUI Based, simplest way
    • For larger USB drives(16GB+)
  • diskpart method
    • Command line based, little more work
    • Required for legacy systems(ie. non-UEFI, pre-2012)
Mac os el capitan usb installer

# Disk Management method

Simply open up Disk Management, and format your USB as FAT32:

  1. Right click the Start Button on your task bar and select Disk Management.
  2. You should see all of your partitions and disks. On the bottom half, you'll see your devices. Find your USB.
  3. You'll want to format the USB to have a FAT32 partition.
  • If you have multiple partitions on the USB, right click each partition and click Delete Volume for your USB (This will remove data, make sure you have backups and only remove partitions from your USB)
    • Right click the unallocated space and create a new simple volume. Make sure it is FAT32 and at least a gigabyte or two big. Name it 'EFI'.
  • Otherwise, right click the partition on the USB and click Format and set it to FAT32.

Next, go to the root of this USB drive and create a folder called com.apple.recovery.boot. Then move the downloaded BaseSystem or RecoveryImage files. Please ensure you copy over both the .dmg and .chunklist files to this folder:

Now grab OpenCorePkg you downloaded earlier and open it:

Here we see both IA32(32 Bit CPUs) and X64(64 Bit CPUs) folders, choose the one that's most appropriate to your hardware and open it. Next grab the EFI folder inside and place this on the root of the USB drive along side com.apple.recovery.boot. Once done it should look like this:

# Rufus method

  1. Download Rufus(opens new window)
  2. Set the BOOT selection as not bootable
  3. Set File System as Large FAT32
  4. Click Start
  5. Delete all file autorun in USB Drive partition

Next, go to the root of this USB drive and create a folder called com.apple.recovery.boot. Then move the downloaded BaseSystem or RecoveryImage files. Please ensure you copy over both the .dmg and .chunklist files to this folder:

Now grab OpenCorePkg you downloaded earlier and open it:

Here we see both IA32(32 Bit CPUs) and X64(64 Bit CPUs) folders, choose the one that's most appropriate to your hardware and open it. Next grab the EFI folder inside and place this on the root of the USB drive along side com.apple.recovery.boot. Once done it should look like this:

# diskpart method

diskpart methodMacos El Capitan Usb Installer

Mac Os X El Capitan Usb Installer Download

Press Windows + R and enter diskpart.

Now run the following:

Next, go to the root of this USB drive and create a folder called com.apple.recovery.boot. Then move the downloaded BaseSystem or RecoveryImage files. Please ensure you copy over both the .dmg and .chunklist files to this folder:

Now grab OpenCorePkg you downloaded earlier and open it: Download full mojave installer.

Usb

Here we see both IA32(32 Bit CPUs) and X64(64 Bit CPUs) folders, choose the one that's most appropriate to your hardware and open it. Next grab the EFI folder inside and place this on the root of the USB drive along side com.apple.recovery.boot. Once done it should look like this:

Legacy Install Setup

If your firmware does not support UEFI, see below instructions:

To start, you'll need the following:

Next, open up BOOTICE and ensure you've selected the right drive.

Next, enter 'Process MBR' then select 'Restore MBR' and select the boot0 file from Utilities/LegacyBoot/ in OpenCorePkg:

Create
Restore MBRRestore boot0 file

Then head back to the main screen and select 'Process PBR' then 'Restore PBR'. From here, choose the Boot1f32 file from Utilities/LegacyBoot/ in OpenCorePkg:

Restore PBRRestore boot1f32 file
Usb

Once this is done, head back to your USB and do 1 final thing. Grab either the bootx64(64 Bit CPUs) or bootia32(32 Bit CPUs) file from Utilities/LegacyBoot/ and place it on the root of your drive. Rename this file to boot to ensure DuetPkg can properly:

Mac Os El Capitan Clean Install Usb

# Now with all this done, head to Setting up the EFI to finish up your work