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 First, review this introductory article: Create a bootable installer for macOS.You should know how to create a mac os High Sierra bootable USB when a reinstall is required. I download yosemite file from torrent as the link u provide say that yosemite are not available in ur country story,the file is in.dmg format, now what should i do, i extract the same file “os x yosemite” have 9 mb space,but it didnt work,they say that “Applications/Install OS X Yosemite.app does not appear to be a valid OS. High Sierra is a still consideration macOS version for old Mac. How to Make an OS X Yosemite Boot Installer USB Drive.
Use the Restore Disk Image to Drive dialog box to browse for the DMG file with the installation files for Mac OS X Yosemite in this case, and click the OK button to create a bootable USB of the operating system.
USB as the name Mac OS Extended Journal as the format GUID Partition Map as the scheme Note: Make sure you choose the right device or you’ll be erasing a device that may have data that you want to save. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal. Open the Disk Utility, select your USB drive that you’ll be using as your installer and choose the following options when erasing it.
First, review this introductory article: Create a bootable installer for macOS. In the main window, you’ll see a pop-up menu under Select the volume to become the installer. It’s OK if it’s not formatted as a Mac drive.