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      • If you’d previously added other drives to your startup disk, click the delete volume button (–) to erase them. Then, choose Macintosh HD in the sidebar. Click the Erase button, then select a file system format and enter a name for it. For Macs with an M1 chip, your option for a file system format is only Apple File System (APFS).
      www.backblaze.com/blog/how-to-wipe-a-mac-hard-drive/

      Guide to How to Wipe a Mac or Macbook Clean - Backblaze

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  4. support.apple.com › guide › disk-utilityErase and reformat a storage device in Disk Utility on Mac

    In Disk Utility on Mac, you can erase and reformat storage devices to use with your Mac. Erasing a storage device deletes everything on it. Important: If you have any files you want to save, copy them to another storage device before erasing a device.

  5. www.howtogeek.com › 179284 › how-to-securely-wipe-aHow to Securely Wipe a Hard Drive on Your Mac - How-To Geek

    • How to Wipe an External Drive
    • How to Wipe Your Mac's Internal Drive
    • The Best Tech Newsletter Around

    First, open Disk Utility on your Mac. You can search for it with Spotlight (click the search button in the menu bar or use the Command+Spacebar keyboard shortcut) or the search bar in Launchpad. Disk Utility can be opened in the Finder from Applications > Utilities > Disk Utility.

    Next, connect the drive you want to erase, if you haven't already. You also need the sidebar visible to see all your connected drives. If the sidebar is hidden, click the View button and select "Show sidebar."

    You need to select the drive in Disk Utility, not one of the partitions on the drive. The drive is listed in the sidebar above any partitions as the top-level item. For example, in the below screenshot, "Patriot Memory Media" the drive (and is selected) and "PATRIOT" is a FAT32 partition on the drive. If you perform a wipe on a partition instead of the drive, you may not erase all the data.

    With the drive selected, click the Erase button at the top of the window. Disk Utility will open a popup menu allowing you to set the new drive name, file system/format, and the partition scheme. The available options will vary depending on the drive type and size.

    If this is a USB drive, SD card, or other storage that needs to be accessible on non-Apple platforms, set the scheme to Master Boot Record (or GUID if that is unavailable) and the format to MS-DOS FAT (or exFAT if that one is not available). You may need to use exFAT if the drive is too large or if you want to use files larger than 4GB, but some devices can't read exFAT drives. Mac OS Extended format is only readable/writable by Mac computers.

    If you want to securely wipe the drive so the files can't be recovered, click the "Security Options" button in the popup. This will show all available wipe options, from not zeroing out the drive at all (potentially allowing recovery tools to read the erased data) to writing over the entire drive seven times for maximum security. Every wipe adds more time to the process, especially for spinning mechanical disks and flash drives. In most cases, the second option (2x write over) is enough.

    See full list on howtogeek.com

    If you want to wipe your Mac's internal storage so you can safely sell it or give it to someone else, you need to do a full factory reset. This will not only erase the internal drive, but also reinstall macOS from the internet so it's ready to be set up again.

    We have a dedicated guide for how to factory reset any Mac, so you can follow those instructions to wipe your Mac and set it up fresh.

    See full list on howtogeek.com

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    See full list on howtogeek.com

    • Justin Pot
    • Former News Editor

  6. superuser.com › questions › 228735How to format my mac without the installation disk?

    Secure erase is disabled for SSDs, but you can encrypt the drive with FileVault before erasing it normally. Open the Erase tab and press the Erase button. (Optional) Choose Reinstall Mac OS X to perform a clean installation.

  7. support.apple.com › en-us › 102639Use Disk Utility to erase an Intel-based Mac - Apple Support

    Sep 27, 2024 · If you want to restore your Mac to factory settings, such as to prepare it for a new owner, learn what to do before you sell, give away, or trade in your Mac. If using macOS Monterey or later, follow the steps to erase all content and settings instead of the steps in this article.

  8. support.apple.com › en-us › 102624Free up storage space on Mac - Apple Support

    Sep 16, 2024 · Free up storage space on Mac. Learn what to do if your Mac startup disk is almost full, or you don't have enough storage space to download, install, or copy.

  9. www.macworld.com › article › 551409How to erase a Mac’s drive in macOS Catalina, Big Sur, or ...

    Nov 25, 2021 · On an Intel Mac, restart or start up while holding Command-R; with an M1, shut down the Mac, then hold down the power button until “Loading startup options” appears. Navigate to macOS Recovery,...

  10. www.solveyourtech.com › how-to-erase-hard-disk-onHow to Erase Hard Disk on Mac: A Step-by-Step Guide

    Feb 17, 2024 · Step 1: Back up your data. Before erasing anything, make sure you have a backup of all your important files. Backing up your data is crucial because once the hard disk is erased, there’s no going back. You can use Time Machine, an external hard drive, or a cloud service to save your files.