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Reinstall Mac Os X Wipe Hard Drive

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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.

Reinstall Macos Wipe Hard Drive

Feb 07, 2016  ERASE MAC HARD DRIVE AND REINSTALL OS X! EASIEST METHOD! How to wipe your mac memory and reset to default settings. The best and most secure way if selling.NEW VIDEO EVERY SUNDAY. Like, share. But if you can't get access to another Mac or the necessary drive, it's still possible to use a different Recovery mode on all recent Macs, dating back to 2010. Reinstall or wipe. Aug 30, 2016  Some Mac users may require the ability to erase a disk or erase a hard drive from the command line on Mac OS, a task which is typically performed through the Disk Utility application from the GUI. The command line approach to disk erasure in macOS is a bit different and it requires precise syntax to insure that you are erasing the proper disk, making this method of erasing any disk only.

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

Reinstall Mac Os X From Usb

Before wiping Mac hard drive, it's advised to backup important files. Here're the steps to erase everything and reinstall Mac OS X:

  1. Restart Mac;
  2. Press CMD key + R at the same time, and hold them for a while when the gray window shows up options;
  3. Click on 'Disk Utility', and click 'Continue';
  4. Choose the disk listed on the left side, and click 'Erase' Tab;
  5. If you're going to reinstall Mac OS, just leave the settings as default, and click 'Erase' to continue;
  6. After erased, click Reinstall OS X, for example, to continue.
How to reinstall macos after erasing hard drive

Move photos to external hard drive mac os x. 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

  1. Plug in this hard drive, and boot Windows;
  2. Run Macrorit Data Wiper (Click here to download portable edition);
  3. 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';
  4. 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:

  1. Download Macrorit Partition Expert install package or Portable package;
  2. Install it and Run, or run it from portable edition zip file without installation;
  3. Right-click on Mac Hard Drive (now it's clean), and select 'Initialize' to continue;
  4. Choose Partitioning scheme from MBR or GPT; and click OK;
  5. Now this disk turns into unallocated space, click on it, and 'Create Volume';
  6. 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.

Erasing your disk: For most reasons to erase, including when reformatting a disk or selling, giving away, or trading in your Mac, you should erase your entire disk.

Erasing a volume on your disk: In other cases, such as when your disk contains multiple volumes (or partitions) and you don't want to erase them all, you can erase specific volumes on the disk.

Erasing a disk or volume permanently deletes all of its files. Before continuing, make sure that you have a backup of any files that you want to keep.

How to erase your disk

  1. Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
    If you're not erasing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder.
  2. Choose View > Show All Devices from the menu bar in Disk Utility. The sidebar now shows your disks (devices) and any containers and volumes within them. The disk your Mac started up from is at the top of the list. In this example, Apple SSD is the startup disk:
  3. Select the disk that you want to erase. Don't see your disk?
  4. Click Erase, then complete these items:
    • Name: Type the name that you want the disk to have after you erase it.
    • Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
    • Scheme: Choose GUID Partition Map.
  5. Click Erase to begin erasing your disk and every container and volume within it. You might be asked to enter your Apple ID. Forgot your Apple ID?
  6. When done, quit Disk Utility.
  7. If you want your Mac to be able to start up from the disk you erased, reinstall macOS on the disk.

How to erase a volume on your disk

  1. Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
    If you're not erasing the volume your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder.
  2. In the sidebar of Disk Utility, select the volume that you want to erase. The volume your Mac started up from is named Macintosh HD, unless you changed its name. Don't see your volume?
  3. Click Erase, then complete these items:
    • Name: Type the name that you want the volume to have after you erase it.
    • Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
  4. If you see an Erase Volume Group button, the volume you selected is part of a volume group. In that case, you should erase the volume group. Otherwise, click Erase to erase just the selected volume. You might be asked to enter your Apple ID. Forgot your Apple ID?
  5. When done, quit Disk Utility.
  6. If you want your Mac to be able to start up from the volume you erased, reinstall macOS on that volume.

Reasons to erase

You can erase at any time, including in circumstances such as these:

  • You want to permanently erase all content from your Mac and restore it to factory settings. This is one of the final steps before selling, giving away, or trading in your Mac.
  • You're changing the format of a disk, such as from a PC format (FAT, ExFAT, or NTFS) to a Mac format (APFS or Mac OS Extended).
  • You received a message that your disk isn't readable by this computer.
  • You're trying to resolve a disk issue that Disk Utility can't repair.
  • The macOS installer doesn't see your disk or can't install on it. For example, the installer might say that your disk isn't formatted correctly, isn't using a GUID partition scheme, contains a newer version of the operating system, or can't be used to start up your computer.
  • The macOS installer says that you may not install to this volume because it is part of an Apple RAID.

About APFS and Mac OS Extended

Disk Utility in macOS High Sierra or later can erase using either the newer APFS (Apple File System) format or the older Mac OS Extended format, and it automatically chooses a compatible format for you.

How to choose between APFS and Mac OS Extended

Disk Utility tries to detect the type of storage and show the appropriate format in the Format menu. If it can't, it chooses Mac OS Extended, which works with all versions of macOS. If you want to change the format, answer these questions:

  • Are you formatting the disk that came built into your Mac?
    If the built-in disk came APFS-formatted, Disk Utility suggests APFS. Don't change it to Mac OS Extended.
  • Are you about to install macOS High Sierra or later for the first time on the disk?
    If you need to erase your disk before installing High Sierra or later for the first time on that disk, choose Mac OS Extended (Journaled). During installation, the macOS installer decides whether to automatically convert to APFS—without erasing your files.
  • Are you preparing a Time Machine backup disk or bootable installer?
    Choose Mac OS Extended (Journaled) for any disk that you plan to use as a Time Machine backup disk or as a bootable installer.
  • Will you be using the disk with another Mac?
    If the other Mac isn't using macOS High Sierra or later, choose Mac OS Extended (Journaled). Earlier versions of macOS don't work with APFS-formatted volumes.

How to identify the format currently in use

If you want to know which format is currently in use, use any of these methods:

  • Select the volume in the Disk Utility sidebar, then check the information shown on the right. For more detail, choose File > Get Info from the Disk Utility menu bar.
  • Open System Information and select Storage in the sidebar. The File System column on the right shows the format of each volume.
  • Select the volume in the Finder, then choose File > Get Info from the menu bar. The Get Info window shows the Format of that volume.

If your disk or volume doesn't appear, or the erase fails

  1. Shut down your Mac, then unplug all nonessential devices from your Mac.
  2. If you're erasing an external drive, make sure that it's connected directly to your Mac using a cable that you know is good. Then turn the drive off and back on.
  3. If your disk or volume still doesn't appear in Disk Utility, or Disk Utility reports that the erase process failed, your disk or Mac might need service. If you need help, please contact Apple Support.

Learn more

  • If you can't start up from macOS Recovery, you can use a different startup disk instead.
  • If Disk Utility shows a Security Options button in the Erase window, you can click that button to choose between a faster (but less secure) erase and a slower (but more secure) erase. Some older versions of Disk Utility offer the option to zero all data instead. These secure-erase options aren't offered or needed for solid-state drives (SSDs) and flash storage.




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