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Need to create a new partition, or re-format an external drive? There’s no need to hunt down paid partition managers or disk-management boot disks: your Mac includes a built-in partition manager and disk management tool known as Disk Utility.
Disk Utility is even accessible from Recovery Mode, so you can partition your Mac’s hard drive without having to create and load up any special bootable tools.
All external USB disks can be formatted to work on Mac OSX, but not always straight out of the box. In this tutorial we look at formatting disks via the GUI app called Disk Utility and its equivalent command line tool diskutil.This will work in all modern versions of Apple Mac OSX including 10.9 Mavericks, 10.8, 10.7 and 10.6. Low Level Format for Mac OS X. By: Ellis Davidson. Use Disk Utility to format, partition or do a low-level format of attached hard drives. Low-level formatting is rarely necessary but is useful to ensure that information stored on the hard drive is permanently deleted and irretrievable. Format external drives to Mac OS Extended before using with Aperture. Launch Disk Utility. Click the icon for your external hard drive in the sidebar on the left. Click the Erase tab along the top of the window. From the Volume Format menu, choose Mac OS Extended (Journaled). Hello I connect an external hard disk (2.5' IDE Western Digital Scorpio Blue, WD2500BEVE) via USB or FireWire to my Mac mini. The Disk Utility tool shows an external disk drive of 128 GB - but the disk has 250 GB. Paragon Disk Wiper for Mac allows to create a bootable USB-flash drive or external hard drive that will help you to completely erase a whole hard disk, a separate partition or just clean free space. After booting your Mac with the bootable media you will be able to use Wipe Wizard to irreversibly.
Accessing Disk Utility
If you need a simpler format tool to format USB or external hard drive to FAT32 for making them work on Mac, you can apply a third-party format tool to format them on Windows PC. EaseUS partition software is a popular disk partition management tool which is available for all hard disk related jobs such as format disk partition, extend system.
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To access the Disk Utility in macOS, just press Command+Space to open Spotlight search, type “Disk Utility” into the search box, and then press Enter. You can also click the Launchpad icon on your dock, click the Other folder, and then click Disk Utility. Or, open a Finder window, click Applications in the sidebar, double-click the Utilities folder, and then double-click Disk Utility.
RELATED:8 Mac System Features You Can Access in Recovery Mode
To access the Disk Utility on a modern Mac—regardless of whether it even has an operating system installed—reboot or boot up the Mac and hold Command+R as it boots. It’ll boot into Recovery Mode, and you can click Disk Utility to open it up.
In Recovery Mode, macOS runs a special sort of recovery environment. This allows you to use Disk Utility to wipe your entire drive—or repartition it.
Partition Drives and Format Partitions
Disk Utility shows internal drives and connected external drives (like USB drives), as well as special image files (DMG files) that you can mount and access as drives.
On the left side of the window you’ll see all mounted volumes.
RELATED:How to Show Empty, Unformatted Drives in Disk Utility on macOS
This annoyingly leaves out empty hard drives, but click Views > Show All Devices in the menu bar and you’ll see a tree of drives and their internal partitions. Each “parent” drive is a separate physical drive, while each little drive icon below it is a partition on that drive.
To manage your partitions, click a parent drive and select the “Partition” heading. You can adjust the partitioning layout scheme here. You can also resize, delete, create, rename, and reformat partitions.
Note: Many of these operations are destructive, so be sure you have backups first.
RELATED:APFS Explained: What You Need to Know About Apple’s New File System
If you want to repartition your system drive, you’ll need to do this from within Recovery Mode, with one exception: APFS volumes. APFS is Apple’s new file system, the default on solid state drives as of macOS High Sierra, and it’s got all sorts of clever tricks up its sleeve. One of them: volumes on the same drive pool storage space, meaning you’ll see two separate drives in Finder, but won’t have to manage how much storage space each volume uses. To add a new APFS volume, simply select your system drive, and then click Edit > Add APFS in the menu bar. You’ll see the above prompt.
First Aid Repairs File System Problems
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If a hard drive is acting up, Disk Utility’s First Aid function is the first thing you should try. This feature checks the file system for errors and attempts to correct them, all without much intervention from you.
Simply click the drive you want to check, then click the “First Aid” button. Be warned that these checks can take a while, and running them on your system drive will leave you with an unresponsive computer until it’s done.
Secure-Erase a Partition or Drive
The Erase button allows you to erase an entire hard disk or partition. You can also choose to only erase its free space.
You can use this feature to securely wipe a hard drive. Click a drive, then click the “Erase” button, then click “Security Options” to select a number of passes to overwrite the drive with. One pass should be good enough, but you can always do a few more if you feel like it. The maximum number is unnecessary.
Note that this feature will only be useful on mechanical drives, as you shouldn’t be able to recover deleted data from a solid state drive. Don’t perform a secure erase on a solid-state drive, such as the ones built into modern Mac Books—that will just wear down the drive for no advantage. Performing the “fastest” erase of the internal drive from recovery mode will erase everything.
Best Disk Format For Mac
Create and Work With Disk Images
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Click the File menu in Disk Utility and use the New menu to create blank disk images or disk images containing the contents of a folder — these are .DMG files. You can then mount that disk image file and write files into it. This is particularly useful because you can encrypt that DMG file, creating an encrypted container file that can store other files. You can then upload this encrypted DMG file to cloud storage locations or save it on unencrypted removable drives.
The Convert and Resize Image buttons will allow you to manage that disk image from the Disk Utility window.
Copy Volumes and Restore Disk Images
The Restore feature allows you to copy one volume to another. You can use it to copy the contents of one partition to another, or to copy a disk image to a partition.
You can also create a disk image that contains an exact copy of an entire partition. Select the drive you’d like to create an image of, and then click File > New Image > Image From [Partition Name].
You can later restore this disk image file to a partition, erasing that partition and copying the data from the disk image to it.
RAID Setup
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Mac Format Disk Utility
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The Disk Utility also allows you to set up RAID on a Mac: just click File > RAID Assistant in the menu bar. Combine disks and partitions into one or more RAID sets and choose whether you want to mirror, stripe, or concatenate your data. This is an advanced feature most people won’t need to use, but it’s there if you need it.
Mirroring (RAID 1) means data you write to the RIAD is stored on each partition or drive for failsafe purposes. If one drive dies, your data is still available elsewhere.
Striping (RAID 0) will alternate disk writes between one drive and the other for faster speed. However, if one of the drives fails, you’ll lose all the data — so it’s getting more speed at the expense of less reliability.
Concatenation (JBOD) allows you to combine different drives as though they were one, useful in certain circumstances.
Hp Usb Disk Format Tool For Windows 7
RELATED:Understanding Hard Drive Partitioning with Disk Management
The Disk Utility included with Mac OS X is powerful, and it should handle all the functions you need it to perform. It’s a bit like the Disk Management tool built into Windows, but more capable and, thanks to Recovery Mode, easier to access from outside the operating system.
Photo credit: Joe Besure/Shutterstock.com
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