When Mac OS is running slow, it's better to reinstall the system again instead of carefully cleaning up files; if you want to donate Mac hard drive, or give it to family members using Windows system, you can wipe it and format the hard drive to NTFS or FAT32 in Windows disk manager.
- Wipe Macbook Clean And Reinstall Mac Os
- Erase And Reinstall Mac Os
- How Do I Wipe My Mac Hard Drive And Reinstall Os
- Mac Wipe Hard Drive And Reinstall Os
- Mac Os Wipe And Restore
Sep 08, 2019 How to erase all data on a Mac, how to factory reset a Mac, and how to reinstall macOS. This works for any Mac Including Macbook, Macbook Air, MacBook Pro, Imac, Imac Pro, Mac Pro, & Mac. Sep 24, 2019 It looks like you have a Fusion drive setup there that is borked. Command-option-r boot to Internet recovery then format both internal drives. Then follow the steps in my post above to put the Fusion drive back together. After that reinstall the OS. Let me know if you need more specific steps.
Macrorit Data Wiper is able to wipe Mac Hard Drive with HFS plus file system clean, after wiped in data Wiper, the hard drive can be used without worrying about leakage on old data.
Wipe Mac hard drive and reinstall Mac OS
Before wiping Mac hard drive, it's advised to backup important files. Here're the steps to erase everything and reinstall Mac OS X:
- Restart Mac;
- Press CMD key + R at the same time, and hold them for a while when the gray window shows up options;
- Click on 'Disk Utility', and click 'Continue';
- Choose the disk listed on the left side, and click 'Erase' Tab;
- If you're going to reinstall Mac OS, just leave the settings as default, and click 'Erase' to continue;
- After erased, click Reinstall OS X, for example, to continue.
Now we have this OS reinstalled, it runs smooth as it were. Everything on the disk has been wiped, it's a clean Mac now, and it's safe to donate or share it with others.
Wipe Mac Hard Drive in Windows
What if Mac won't boot, CMD+R can't work either? There's another way to wipe Mac hard drive clean and factory setting it in Windows system, not to format or delete volume in Windows Disk Management, but wipe this disk in third party disk manager, Macrorit Data Wiper.
Steps to wipe Mac Hard Drive in Macrorit Data Wiper
- Plug in this hard drive, and boot Windows;
- Run Macrorit Data Wiper (Click here to download portable edition);
- In the main window, the Mac hard drive is loaded into the disk map, we first click 'Entire Drive', and select on overwrite method from the five available security list; click 'Wipe Now';
- Confirm and type 'wipe' in the dialog box, and click 'start' to wipe.
Format HFS plus to FAT32 or NTFS
Mac Hard Drive's file system is HFS plus in the recent released OS, which cannot be recognized by Windows, so we need to format this disk after wiped in Data Wiper to make is useful in Windows 10. Since the disk is now clean, no file system, no EFI partition in it, its factory settings, so we need to initialize this disk and create partition on it.
HFS plus is also known as HFS +, HFS Extended, Mac OS Extended, is a file system developed by Apple Inc., not apply to Windows OS.
Steps to format Mac Hard Drive to NTFS or FAT32 in Windows 10:
- Download Macrorit Partition Expert install package or Portable package;
- Install it and Run, or run it from portable edition zip file without installation;
- Right-click on Mac Hard Drive (now it's clean), and select 'Initialize' to continue;
- Choose Partitioning scheme from MBR or GPT; and click OK;
- Now this disk turns into unallocated space, click on it, and 'Create Volume';
- Choose NTFS or FAT32 in file system column, define cluster size, assign drive letter, and give drive label to this volume; and click OK after resize this volume;
In a word, Macrorit Data Wiper is to wipe disk to its original status, factory reset it, you are able to use format it to any file system in any operating system before using.
Reinstall from macOS Recovery
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
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One finger pause app mac.
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
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You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
Wipe Macbook Clean And Reinstall Mac Os
When you see the utilities window, you have started up from macOS Recovery.
Erase And Reinstall Mac Os
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
How Do I Wipe My Mac Hard Drive And Reinstall Os
The version of macOS offered by macOS Recovery might vary in some cases:
Mac Wipe Hard Drive And Reinstall Os
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
Mac Os Wipe And Restore
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.