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?
OS X El Capitan is finally here, and if you're looking to install Apple's new desktop OS fresh from the ground up, then you'll be needing a bootable USB flash drive to get started with the process. Aug 19, 2021 Therefore, you can create bootable USB for your Mac using Transmac on windows 10/7/8/8.1 here you will learn the easiest method of creating bootable USB. As you know that Mac OS EL Capitan is the newest version among Mac. In here just follow my steps to create a bootable USB installer for your Mac. Is the twelfth major of the Mac operating system.
Here are the instructions for creating a bootable macOS USB 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.
Make A Bootable Mac Disk
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.
Download El Capitan To Usb
Aug 21, 2021 12:52 PM