On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It will install an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or.pkg installer. I need to make a bootable USB drive installer for a 2009 MBP. I just put in a new SSD and want to do a fresh OSX install. I believe that El Capitan is the last supported software for this hardware. I'm looking for an OS X El capitan.app download but I can't seem to find it anywhere. Make sure to boot from the USB device again, and select Boot OS X Install from Install OS X El Capitan once again, in verbose mode. The installation is a two-part process that continues once you re-boot into the USB drive. Finally, after about 25 more minutes, OS X El Capitan should be successfully installed on the target drive.

1. Create Bootable El Capitan Usb
2. El Capitan Usb Bootable Installer
3. El Capitan Usb Bootable Installer Windows 7

I will show you how to download macOS Beta, and then create a bootable macOS Monterey USB Installer Flash Disk!

If you want to install and test macOS Monterey, creating macOS 12 USB installer is the way to go! This will allow you to quickly install the OS on Intel and M1 Macs.

Step 1 – Enroll in Apple Developer Program

I’ll show you how to enroll into macOS Monterey Beta program. 3 different ways are listed below.

1. developer.apple.com = Developer Beta Profile – $99

2. beta.apple.com = Public Beta Profile – Free

3. Seedutil Binary = Pick between Public, Developer & Customer Seed – Free

Step 2 – Download macOS 12 Beta

You can go over to my macOS 12 Full Installer Database to grab the latest InstallAssistant.pkg file

Step 3 – How to create macOS Monterey Beta USB Installer

I have the steps listed below but if you want to watch a short video on the process, here it is.

Step 3 – Install InstallAssistant.pkg

You will now see InstallAssistant.pkg in your Downloads folder. Double click to install it. This package puts the “macOS 12 Install app” into your Applications folder.

Step 4 Erase & Format your USB Flash Drive

Now that you have the macOS 12 Beta app in your /Applications folder you can create your USB Installer! The USB Flash Drive needs to be at least 16GB because the installer is about 12-14GB.

Plug in your USB Flash Drive

Open up Disk Utility and erase your USB Flash drive. Be sure to use Mac OS Extended (Journaled) format.

Step 5 Install macOS 12 Beta to your USB Drive

Open up the Terminal.app from /Applications/Utilities

2. type in Sudo then space

3. Drag your macOS 12 installer app to the terminal window

4. the full path is sudo /Applications/Install macOS 12 Beta.app/Contents/Resources/createinstallmedia

5. Add the –volume option then drag your USB Flash Drive to the terminal window.

Create Bootable El Capitan Usb

The final full path will look like this sudo /Applications/Install macOS 12 Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

Hit enter and then enter your account password.

From here the files will start to copy to your USB flash Drive. The total time should be about 5-10 min depending on your USB Flash drive speed.

macOS Monterey USB installer

I'm a bit confused by your post on what you are trying to do here. Are you trying to boot into Recovery Mode to install macOS to an external USB drive or are you trying to boot from a macOS USB installer to install macOS to the internal drive?

Here are the instructions for creating a bootable macOS USB installer:

El Capitan Usb Bootable Installer

Make sure to carefully read the section regarding macOS 10.11 as there are extra steps required to extract the real installer from the downloaded .dmg archive to the Applications folder. After running the .pkg file from the mounted .dmg file you can then proceed to use the command line to create the bootable macOS USB installer itself.

Macs are very picky about the drives used for booting a Mac plus the quality of many USB sticks is extremely poor so try using another USB stick especially a different brand.

When erasing the drive make sure to select the whole physical drive within Disk Utility and erase the physical drive as GUID partition and MacOS Extended (Journaled). The physical drive should be the top most item which is usually identified by the make & model of the drive itself.

El Capitan Usb Bootable Installer Windows 7

Aug 21, 2021 12:52 PM