How to install a fresh copy of OS X on your Mac
- Shut down your Mac.
- Press the Power button (the button marked with a O with a 1 through it)
- Immediately press the command (cloverleaf) key and R together.
- Make sure you’re connected to the internet through Wi-Fi.
- Select Install Mac OS X, then click Continue.
- Wait.
How do I install the latest Mac OS?
How to download and install macOS updates
- Click on the Apple icon in the upper left corner of your Mac’s screen.
- Select App Store from the drop-down menu.
- Click Update next to macOS Mojave in the Updates section of the Mac App Store.
How do I do a fresh install of OSX?
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 download OS X?
Downloading Mac OS X from Mac App Store
- Open the Mac App Store (choose Store > Sign In if you need to log in).
- Click Purchased.
- Scroll down to find the copy of OS X or macOS you want.
- Click Install.
How do I install Mac OS on a new SSD?
With the SSD plugged in to your system you’ll need to run Disk Utility to partition the drive with GUID and format it with Mac OS Extended (Journaled) partition. The next step is to download from the Apps Store the OS installer. Run the installer selecting the SSD drive it will install a fresh OS onto your SSD.
How do I reinstall OSX?
Step 4: Reinstall a clean Mac operating system
- Restart your Mac.
- While the startup disc is waking up, hold down the Command+R keys simultaneously.
- Click on Reinstall macOS (or Reinstall OS X where applicable) to reinstall the operating system that came with your Mac.
- Click on Continue.
How do I wipe and reinstall my Mac?
Select your startup drive on the left (typically Macintosh HD), switch to the Erase tab and choose Mac OS Extended (Journaled) from the Format drop-down menu. Select Erase and then confirm your choice. Quit out of the Disk Utility app, and this time choose Reinstall OS X and Continue.
How do I do a clean install of OSX Mojave?
How to Clean Install MacOS Mojave
- Complete a full Time Machine backup before starting this process.
- Connect the bootable macOS Mojave installer drive to the Mac via a USB port.
- Reboot the Mac, then immediately start holding the OPTION key on the keyboard.
How do I redownload OSX Mojave?
How to install a new copy of macOS Mojave in Recovery Mode
- Connect your Mac to the internet via Wi-Fi or Ethernet.
- Click on the Apple icon in the upper left corner of your screen.
- Select Restart from the drop-down menu.
- Hold down Command and R (⌘ + R) at the same time.
- Click on Reinstall a new copy of macOS.
How do you reinstall the operating system on a Mac?
How to reinstall macOS while in Recovery mode
- Click Reinstall macOS.
- Click Continue.
- Click Continue.
- Click Agree.
- Click Agree.
- Click on the drive on which you wish to install macOS.
- Enter your Apple ID and password if you’re asked to, though you might not be.
- Click Install.
How do I install Windows on a new SSD?
How to Install Windows 10 on SSD
- Step 1: Run EaseUS Partition Master, select “Migrate OS” from the top menu.
- Step 2: Select the SSD or HDD as the destination disk and click “Next”.
- Step 3: Preview the layout of your target disk.
- Step 4: A pending operation of migrating OS to SSD or HDD will be added.
How do I reformat my SSD?
How to format SSD in Windows 7/8/10?
- Before formatting an SSD: Formatting means deleting everything.
- Format SSD with Disk Management.
- Step 1: Press “Win+R” to open “Run” box, and then type “diskmgmt.msc” to open Disk Management.
- Step 2: Right click the SSD partition (here is E drive) you want to format.
How do I install OSX on an external hard drive?
Steps
- Download Mac OS X Lion from the Mac App Store.
- Connect the external hard drive you want to install OS X Lion on to your Mac.
- Navigate to Applications>Utilities> and double-click Disk Utility.
- Select the hard drive you connected from the pane on the left within Disk Utility.
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