mac os high sierra dmg bootable usb download

Then when that s done > see below instructionsġ - Shutdown computer and disconnect all external drive Except the newly created Bootable Installer.Ģ- Restart and immediately hold the OPTION key until the Startup Manager appears and choose the USB Drive.ģ - It will present options > Disk Utilities > View > View ALL attached Drives.Ĥ - Choose the Upper Most Drive ( not the volumes indented and list below ).ĥ - The drive normally is called Apple Media or Apple SSD - that is the drive to Erase and format as HFS Journaled with the GUID Partition Map.Ħ - Once that is done > backup out of Disk Utilities and choose install macOS.ħ - Follow the prompts and it may automatically reboot several time.Ĩ - Upon a final reboot - Setup Assist will present with the newer version of macOS. If you can access some other Apple Computer that qualifies to run High Sierra - that might be the solution even if on a temporary bases to create the Bootable Installer Download macOS Catalina DMG File (Direct Links) by Techsprobe Technology Platform Geekrar Medium Sign up 500 Apologies, but something went wrong on our end. The only way is by using an Apple Computer that qualifies to run High Sierra. Type or paste one of the commands below into Terminal, then press Return to enter the command. Open Terminal, which is in the Utilities folder of your Applications folder.

Attempting from a Windows computer will not work, shall not and will never work. macOS Ventura macOS Monterey macOS Big Sur macOS Catalina macOS Mojave macOS High Sierra macOS Sierra Supported File Systems. Download macOS Use Terminal to create the bootable installer Plug in the USB flash drive or other volume that you're using for the bootable installer.

Mac os high sierra dmg bootable usb download