The macOS High Sierra installation time should take about 30 to 45 minutes to complete if everything works right. This assumes that nothing goes wrong and is a best case scenario. When you install a smaller update like macOS High Sierra 10.13.
How long does Mac OS reinstall take?
macOS generally takes 30 to 45 minutes to install. That’s it. It doesn’t “take so long” to install macOS. Anyone making this claim has clearly never installed Windows, which not only generally takes over an hour, but includes multiple restarts and babysitting to get to completion.
Can I reinstall macOS High Sierra?
Hold down Option-Command-R as you turn on or restart your Mac. Release the keys when a spinning globe appears. This will boot the latest version of Recovery Mode over the Internet, which will offer to install macOS High Sierra.
Why is my macOS High Sierra not installing?
To fix the macOS High Sierra problem where the installation fails due to low disk space, restart your Mac and press CTL + R while it’s booting to enter the Recover menu. … It may be worth restarting your Mac in Safe Mode, then trying to install macOS 10.13 High Sierra from there to fix the problem.
What happens if I delete install macOS High Sierra?
2 Answers. It is safe to delete, you will just be unable to install macOS Sierra until you re-download the installer from the Mac AppStore. Nothing at all except you would have to download it again if you ever need it. After install, the file would usually be deleted anyway, unless you move it to another location.
Will I lose data if I reinstall macOS?
2 Answers. Reinstalling macOS from the recovery menu does not erase your data. However, if there is a corruption issue, your data may be corrupted as well, its really hard to tell. … Reinatalling the os alone does not erase data.
Why does reinstalling macOS taking so long?
Since the main reason for slow OS X installs is the use of relatively slower installation media, if you are planning on installing OS X multiple times then you might benefit from using faster media.
How do I reinstall OSX High Sierra from USB?
Create a bootable macOS installer
- Download macOS High Sierra from the App Store. …
- When it’s finished, the installer will launch. …
- Plug in the USB stick and launch Disk Utilities. …
- Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.
- Give the USB stick a name, then click Erase.
How do I restore my High Sierra Mac?
Hold down Command+Option+Shift+R to boot into recovery mode. Note, you can also boot into Recovery mode by pressing Command+R. However, adding Option+Shift will allow you to reinstall High Sierra, if your Mac came with it installed. Click on Disk Utility in the macOS Utilities window.
Where can I download macOS High Sierra installer?
How to Download the Full “Install macOS High Sierra. app” Application
- Go to dosdude1.com here and download the High Sierra patcher application*
- Launch “MacOS High Sierra Patcher” and ignore everything about patching, instead pull down the “Tools” menu and choose “Download MacOS High Sierra”
How do I update my Mac when it says no updates available?
Click Updates in the App Store toolbar.
- Use the Update buttons to download and install any updates listed.
- When the App Store shows no more updates, the installed version of MacOS and all of its apps are up-to-date.
Why is macOS Catalina not installing?
Typically, a macOS download fails if you do not have enough storage space available on your Mac. … If you’re still having problems downloading macOS Catalina, try to find the partially-downloaded macOS 10.15 files and a file named ‘Install macOS 10.15’ on your hard drive.