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G-Technology G-DRIVE mobile USB, 1TB, Portasble USB 3.0 Drive, 7200 RPM (transfer rates up to 136MB/sec) External Drive (0G02874).5 GB), Apple states in the support document ‘ OS X: Installing OS X on an external volume‘ that “ the storage device must have at least 13 GB available (after formatting) to install OS X Lion or later and a Recovery partition“. For details about the high-speed I/O performance see Apple’s Thunderbolt page.Īlthough the OS X installers are much smaller (approx. With USB 2.0 the speed (up t0 0.25 Gb/sec) is significantly slower, the experience on USB 1.0 is unacceptable. However, the best choice is an external drive connected via USB 3.0 (up to 5 Gb/sec), Thunderbolt (up to 10 Gb/s) or Thunderbolt 2 (up to 20 Gb/sec) due to transfer speed reasons. The installation of Mac OS X 10.11 El Capitan on an external hard drive works on a SD Card, USB flash drive, USB drive or any other external hard drive connected via USB 2.0, USB 3.0, FireWire or Thunderbolt. What do you think about the method of creating a bootable USB flash drive? Sound off with your thoughts and opinions down below.How to install OS X 10.11 El Capitan on external drive 1. In future tutorials I will show you different methods for installing OS X El Capitan on your Mac, including via Virtual Machine and on a separate partition, using this bootable drive. Since DiskMakerX doesn’t yet have an El Capitan option, it will name it Yosemite. You may choose to rename the name of the drive to El Capitan instead of Yosemite. You can now eject your USB key and keep it handy for future usage. Step 12: Once the process is completed, click Quit Step 11: Enter your administrator password when requested Step 8: Select your USB flash drive and click Choose this disk Step 6: In the Applications folder, select Install OS X 10.11 and click Choose Step 4: Click Yosemite (10.10) since there is no option available for El Capitan currently

Step 2: Download and install the latest version of DiskMakerX Step 1: Connect the flash drive to your Mac The drive creation take about 30 minutes total, but your mileage may vary. Ensure that there’s nothing on the drive that you wish to keep, as this process will completely erase the drive including any volumes. Note: your USB flash drive must be at least 8GB in size.