The macOS Sierra installation time is about 45 minutes once everything is downloaded. This assumes that nothing goes wrong and you have a typical upgrade. Your computer will restart during this time and you cannot use your Mac while you install macOS Sierra.
How long does macOS reinstall take?
Depends on what kind of Mac you have and method of install. Typically, if you have a stock 5400 rpm drive, it takes about 30 – 45 minutes using a USB installer. If you are using the internet recovery route, it can take over an hour, depending on speed of internet etc.
How long does it take to download macOS High Sierra?
The macOS High Sierra installation time should take about 30 to 45 minutes to complete if everything works right.
Why is macOS Sierra not installing?
macOS Sierra problems: Not enough space to install
If you get an error message while installing macOS Sierra saying that you don’t have enough hard drive space, then restart your Mac and boot into safe mode. … Then restart your Mac and try to install macOS Sierra again.
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.
What happens when I reinstall my macOS?
2 Answers. It does exactly what it says it does–reinstalls macOS itself. It only touches operating system files that are there in a default configuration, so any preference files, documents and applications that are either changed or not there in the default installer are simply left alone.
How do I reinstall macOS High Sierra on Macbook Air?
You can reinstall macOS Sierra or macOS High Sierra by doing the following:
- Back up the Mac before beginning.
- Reboot the Mac and hold down COMMAND + R keys concurrently right after you hear the boot sound, this will boot the Mac into Recovery Mode.
- At the “macOS Utilities” screen choose “Reinstall macOS”
Do I need to keep install macOS High Sierra?
The system does not require it. You can delete it, just keep in mind that if you ever want to install Sierra again, you will need to download it again.
Is Sierra after Yosemite?
“Panther”, “Tiger”, and “Leopard” were registered as trademarks, and Apple registered “Lynx” and “Cougar”, but these were allowed to lapse, with Apple instead using the name of iconic locations in California for subsequent releases: 10.9 Mavericks is named after Mavericks, a popular surfing destination; 10.10 Yosemite …
How do you fix macOS could not be installed?
How to Fix the ‘macOS Could Not Be Installed’ Error
- Restart and try the installation again. …
- Check the Date & Time setting. …
- Free up space. …
- Delete the installer. …
- Reset the NVRAM. …
- Restore from a backup. …
- Run Disk First Aid.
How do I reinstall OSX not enough space?
Stuck in a macOS update loop because there is not enough free space
- Change your startup disk.
- Repair your hard drive using Disk Utility.
- Erase your hard drive, if you have a backup.
- Create enough free space for the macOS update using Terminal.
How do I stop OSX installer?
We tried to quit the installer – we clicked on the Installer window and then from the menu above choose Quit MacOS Installer (alternatively Command + Q).