![downgrade mac os to yosemite usimg usb downgrade mac os to yosemite usimg usb](https://support.apple.com/library/content/dam/edam/applecare/images/en_US/osx/yosemite-disk_utility.png)
The 5GB OS X Yosemite installer app that downloads into your Applications folder when you first install it via the Mac App Store.
![downgrade mac os to yosemite usimg usb downgrade mac os to yosemite usimg usb](https://i.ytimg.com/vi/m3KgMBp3uqc/maxresdefault.jpg)
#Downgrade mac os to yosemite usimg usb how to#
Here's how to make one using Apple's built-in boot drive creation tool. But what if you need to partition the hard drive, wiping the recovery partition? You need a bootable OS X Yosemite installer. How do you erase your Mac hard drive and install OS X Yosemite without a startup disk? Normally the answer would be to boot into recovery mode. Learn more A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model.Įl capitan app download. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions. Then just click on the “ Erase ” tab and format the drive as “Mac OS Extended. Now select drive indicating USB flash drive (select the USB drive you want to make the bootable installer) from the available drives list. First connect your USB drive to the Mac computer and launch Disk Utility tool. Stage 1: Create Bootable USB Flash Drive. First, review this introductory article: Create a bootable installer for macOS.Second, see this How To outline for creating a bootable El Capitan installer. Bootable USB Installers for OS X Mavericks, Yosemite, El Capitan, and Sierra.