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?
Mac Os El Capitan Usb Installer For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal: How to update os in macbook.
- To create a bootable El Capitan installer drive, you need the El Capitan installer from the Mac App Store and a Mac-formatted drive that’s big enough to hold the installer and all its data. Mac OS El Capitan is the twelfth major release of Mac OS X, that now named as Mac OS X, the latest version is 10.11 for Apple Inc, desktop.
- It installs an app named Install OS X El Capitan into your Applications folder. A bootable installer doesn't. Aug 21, 2019 For a clean install, at first, you will need a bootable version of OS X El Capitan installer. After getting a bootable drive or device follow the steps to boot-Insert the device containing os X El Capitan installer.
Here are the instructions for creating a bootable macOS USB installer:
Os El Capitan Installer
Make Usb El Capitan 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.
Make El Capitan Usb Installer
Aug 21, 2021 12:52 PM