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?
In June 2018, I tried to install El Capitan on a USB drive using the createinstallmedia tool (on a Mac on High Sierra). After erasing the drive and then using that tool, my laptop failed to boot from the drive, so I tried toggling “Ignore ownership”.
Software autek research va1 manual high school. Here are the instructions for creating a bootable macOS USB installer:
- Apr 26, 2021 Use Terminal to Create the El Capitan Bootable USB Installer. Follow these steps to create a bootable USB installer of El Capitan in Terminal. Connect the USB flash drive to your Mac. Give the flash drive an appropriate name. You can do this by double-clicking the device's name on the desktop and then typing a new name.
- Install El Capitan. Now that the installation USB drive is ready, let's install OS X El Capitan! Boot from the USB Drive. Restart your computer and boot from the USB drive (Press Esc/F8/Del to access the boot selection menu). Use the arrow keys to select Boot OS X Install from Install OS X El Capitan (It should be.
- Install el capitan from usb drive Driver File Name: install-el-capitan-from-usb-drive.exe Driver Upload Date: 16 December 2020 Last Driver Version: 8.9.7 Driver File Size: 13,425 KB User Driver Rating: 4.7/5.
- El Capitan Installer is the post version to the Yosemite, and it was built by adding up more improvements to the Yosemite. In this version of the Mac operating system, the Apple Inc. Has focused on the performance, stability, and security of the computer. Anyone who is interested can download it.
/create-bootable-os-x-el-capitan-installer-2259939-0106fd090b9849678b321c6f4419643b.png "Usb")
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.
El Capitan Dmg
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.
Usb Installer El Capitan
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.
Aug 21, 2021 12:52 PM