Set it aside, calm down and download a bootable data recovery app using any other computer. You can turn your computer off, remove the drive in question from the docking station, do whatever may be required to prevent any further utilization of that drive. Tip: To boot from the installer drive, hold down the Option key during Mac system start, and select it from the startup volume menu. Otherwise, you can insert the USB flash drive into any Mac and launch the installer directly from the drive.The initial recommendation given to anyone who lost important data and would like to proceed with the data recovery is always to stop using the drive where the data was stored as soon as possible. Your bootable OS X El Capitan installer drive is ready, and you can use it to update as many Macs as you want to with OS X 10.11. Hit the Return key and enter the administrator password when requested. You’ll then see the following screen text in the Terminal: Now launch the Terminal application, found in /Applications/Utilities/ and enter the following command exactly ( update: we updated the command below as it was incorrect. Earlier today, Apple finally released OS X El Capitan to general public as a free download via the Mac App Store, with tons of new features, performance updates and security fixes. While Apple does not officially offer its OS via optical media or USB sticks, you can always keep a physical copy of your Mac App Store download in the form of a bootable install USB drive, which is quite useful if you ever wish to do a clean install of the operating system.īelow are the step-by-step instructions on how to create a bootable OS X El Capitan install USB drive (via OS X Daily):ĭownload OS X El Capitan from the Mac App Store, but don’t install it yet.Ĭonnect a USB drive (8GB or larger) to your Mac and rename it to ElCapInstaller.
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