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 The only way is by using an Apple Computer that qualifies to run High Sierra. Note: If you want to have a choice of the language for your Firefox. Mac computers have four types of file permissions, as determined by Apple in most of its operating systems, including macOS Big Sur. It will automatically detect the platform and language on your computer and recommend the best version of Firefox for you. Now that you have all the necessary ingredients. One high quality USB flash drive with 16GB of storage. Select the External Firewire/USB device that you want to use as the boot drive for the upgrade.
#Pages dmg mac mac os x#
Attempting from a Windows computer will not work, shall not and will never work. To download and install Firefox: Visit the Firefox download page in any browser (for example, Safari). Install Mac OS X 10.6 Snow Leopard from an external Firewire or USB drive.
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