What if OS x won t install?
If macOS still won’t install properly, you might need to reinstall the whole operating system instead. You can do this using Recovery Mode on your Mac. Restart your Mac and hold Option + Cmd + R while it powers on. Click Reinstall macOS to install the latest version of macOS.
How do I fix this item is temporarily unavailable when reinstall OS X?
How to fix “This Item Is Temporarily Unavailable…” error
- Make sure the Apple ID is correct. People are encountering this error only after inputting their Apple ID.
- Clean outdated system junk.
- Set up the correct date and time.
- Check if Apple ID is signed in.
- Check your Mac for malware.
How to create a macOS High Sierra bootable USB?
Install macOS on your startup disk drive. 1 1. Go to System Preferences. 2 2. Click on Startup Disk and select the installer. 3 3. Restart your Mac. 4 4. Hold down Command (⌘) + R to boot into recovery mode. 5 5. Connect your macOS High Sierra bootable USB.
Where to find High Sierra installer in disk maker?
DiskMaker locates the macOS High Sierra installer. If your downloaded installer ended up in the Applications folder (as it should), click “Use this copy”, which is highlighted in blue. DiskMaker X 7 then asks for the type of disk you’re using for your bootable disk (see image below). Select the type of disk being used.
How big of an external drive do I need to boot High Sierra?
Get an external drive you want to save the installer on. While an SSD would be a great option to create a bootable macOS High Sierra installer, a 16GB USB drive is enough as well. The system will automatically reformat the drive to make it compatible with a Mac. Change the name of your drive to HighSierra.
How long does it take to install macOS High Sierra?
Apple distributes macOS High Sierra through the App Store. You need an internet connection, and the download will be over 5GB, so it’ll take a few minutes. For a single Mac, the installation process through the App Store works well, but if you have several Macs, it’s not efficient.