Format An External Hard Drive For Mac



Sep 28, 2020 • Filed to: Solve Mac Problems • Proven solutions

In all likelihood, you're more acquainted with formatting an external hard drive than your Mac's internal one, aren't you? That's often the norm because there's rarely ever a need to format your internal drive. But regardless of what type it is, errors can still restrict it from reading and writing data. This means you can't store files and neither can you copy or delete anything from the drive. At times, formatting your drive could be the only logical solution to fixing it; other times, simple fixes could get it working again.

To format an external hard drive for Mac with Time Machine, you must follow the steps below. Step 1 Open Finder, Applications, then go to Utilities and Disk Utility. Step 2 Follow the steps above to format the drive, and then you can use it with Time Machine on your Mac system. Part 3: Bonus Tip – Data Recovery from Formatted Hard Drive on Mac. On Windows: Plug your hard drive into your computer. Insert the drive's USB cable into one of the. Part 2: Format External Hard Drive for Mac with Disk Utility. Formatting an external hard drive would erase everything on it. Hence, you must backup your important files before reformatting the drive if you want to save them. The easiest way is to drag it from one drive to another. All is set, then you can go ahead to format the drive on your Mac.

  • Part 1: How to Format Hard Disk on Mac
  • Part 2: When You Need to Format Disk on Mac
  • Part 3: Different Formats of Mac Hard Drive
  • Part 4: How to Fix Errors When Formatting Mac Hard Drive
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Part 1: How to Format Hard Disk on Mac

The simple reason you might want to completely wipe your Mac's internal drive is that it has encountered one serious error or another. Apple has given you several options to choose from should you ever need to format or reformat your drive. No one needs to tell you formatting your Mac's drive entails reinstalling the macOS afterward, right? As long as you're aware of that, you're good to go.

1. How to Format New Hard Disk

Formatting a new disk, in the simplest of terms, means setting up a file system in the new drive to work with your macOS. There are different file systems, as you'll soon find out, and each has unique features that some of the other file systems may or may not have.

a) Startup your Mac and press the 'Option'+ '⌘' + 'R' keys to boot into 'Recovery'. Let go of the keys once the Apple logo or spinning globe comes on. The 'Utilities' window will then show up.

b) Click on 'Erase' to format the new hard disk. If you're prompted, choose 'macOS Extended (Journaled)' or any of the other file systems based on your needs or preference. This is also where you give the drive a name.

c) Go back to 'Disk Utility' and select 'Install macOS'. Restart your Mac once it's done. The end.

2. How to Reformat Hard Drive

You can think of reformatting your drive as a way to reset it by putting a new file system into the drive to supplant the old one. It can also mean putting the same file system in the drive to fix it if it's faulty. Reformatting your drive will get rid of your files, of course, but it also gets rid of any errors.

Related: Further, read and know more complete details on undeleting files on Mac.

a) Yes, you're going to be using 'Disk Utility' again. Matter of fact, you'll be seeing this tool a lot throughout the article. Now, fire it up!

b) Look to the left of the 'Disk Utilities' window and select the drive to be reformatted. Click on the 'Erase' button.

c) Follow prompts to select a file system. Choose 'Mac OS Extended (Journaled)' or another file system if you're aware of what each of them offers. Click 'Erase' and let the disk be formatted. Restart your Mac and you're done here.

3. Video Tutorial on How to Format an External Hard Drive

4. Tips for Formatting HDD on Mac

  • Disk Utility is the first tool you should utilize when it comes to formatting any HHD on your Mac. Even if the hard drive is corrupted and can't be formatted, you can use Disk Utility to fix and then format it; if the error isn't too grave, formatting alone should suffice.
  • The importance of backing up your files BEFORE formatting cannot be emphasized enough. Backing them up might be a tedious task, particularly if your hard drive is the motherload of data, but would you rather forgo it and jeopardize the security of your files? Because you're not a machine and it's probable for you to forget you still have important files in the drive to be formatted. Don't be too hasty.
  • If you're not near a power source, make sure your battery is fully charged before you start the formatting of the process. Your Mac suddenly turning off while your drive is being repaired or formatted will only bring forth new errors. Be wary of that.

Part 2: When You Need to Format Disk on Mac

There's nothing complex about what formatting HDD is used for. It completely erases the contents of your Mac's drive. That's simple enough for anyone to understand, but the ramifications of formatting a drive are very broad. A single click of a button can mean the erasure of decades' and terabytes' worth of files. That brings up the question of when it becomes necessary for you to format the drive in your Mac.

  • You and your Mac have had a good run but it's finally time to say goodbye, so you give it out to a buddy. As close as the two of you may be, you still wouldn't want him having to access your files, would you?
  • Mac systems fetch an impressive price, so selling it is an easy way to make a quick buck. Just remember you have sensitive data in your drive. For your Mac's new owner, the files you left in it could just be a bonus of sorts, but for you, it's an inadvertent breach of your privacy.
  • Serious errors or viruses can doctor your macOS so it ignores your commands and wreaks havoc on your drive and files. It's often a good idea to format the drive clean so both viruses and errors are wiped off into oblivion.
  • Restoring your Mac to factory settings entails formatting the disk too.
  • If you intend to change the format of the disk, perhaps from exFAT to APFS, then erasing your disk is necessary.
  • If an annoying message keeps notifying you that your disk can't be read by your Mac, it's time to format it.

Part 3: Different Formats of Mac Hard Drive

The file formats out there waiting to be used by you are few. Knowing the right one to choose depends on what you intend the drive to be primarily used for. Have a read below and determine which one best suits your needs.

How to reformat hard drive
  • APFS (Apple File System)

This is the newest file system Apple incorporated into their Mac systems, so naturally, you can expect it to be more advanced, reliable, and efficient than prior versions. APFS only works on Sierra and if your Mac's drive isn't SSD, APFS won't work for you too.

  • Mac OS Extended (Journaled)

This was Apple's default file system for their Mac systems before APFS entered the picture. There's another variant, Mac OS Extended (Journaled, Encrypted), which sees greater use by people who encrypt their drives and make passwords a necessity. Mac OS Extended (Case-sensitive, Journaled) is another variant that is case-sensitive to names of folders; folders named 'CAR' and 'Car' are not the same. The 4th type is Mac OS Extended (Case-sensitive, Journaled, Encrypted). It has all the distinctive features of its three brethren listed up there rolled into one.

Reformat External Hard Drive On Mac

  • NTFS

Format External Hard Drive For Mac Mojave

This is Windows' very own default file system but it can still be read by your Mac; writing to it it's a different story, though.

  • exFAT

exFAT is one of the more versatile file systems because it's compatible with both macOS and Windows. Either operating system can read drives formatted with exFAT, and it's capable of storing a file larger than 4GB.

  • MS-DOS FAT (FAT32)
Format An External Hard Drive For Mac

This file system is also readable by Mac, Windows, and Linux, so if you often share external hard drives between the 3 operating systems, you might want to go with this option. It's one flaw is you can't copy files larger than 4GB in size each.

Okay, those are the file systems, but how do you know which one of them your Mac is using?

1. Open up 'Disk Utility' and select the volume or drive. Open up 'System Configuration' and choose 'Storage'.
2. Choose the volume in 'Finder', then select 'File' and 'Get info' from the menu bar. The next window will show you the Format of the disk.

Part 4: How to Fix Errors When Formatting Mac Hard Drive

Formatting your drive should be an affair that takes up, at most, minutes of your time. But of course, this isn't always the case, is it? Sometimes, your Mac just decides to make things a little harder for you. Don't sweat it. A few solutions have been rounded up and written out for you down below.

Problem 1. Unable To Format Hard Drive

Does your Mac show you errors similar to what's in the image below? Chances are you don't even know what causes them. Thankfully, fixing them is a breeze.

1. Open up 'Utilities', then your 'Applications' folder. Find 'Disk Utility' from the list and launch it.

2. Click on 'View' and choose 'Show All Devices' in the dropdown menu. Next, you choose the 'Top Volume' of the drive to be formatted.

3. Click on 'Erase', then give a name to the drive. When it comes to 'Format', you can either choose APFS or Mac OS Extended.

4. Choose a 'Scheme' (go with 'GUID Partition Map'). Click on 'Erase' and wait until you see the green checkmark. That means it's done.

External

Problem 2. Erase All Disk Data Without Backup

By now, everyone who handles large amounts of data should be diligent in making regular backups of their files, right? Nope, because there's always that one guy who only decides to do this when it's too late. Have you ever been in such a situation?

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If you have, why not prepare yourself for a similar eventuality? Download and install Recoverit Mac Data Recovery to safeguard your files against accidental deletion and crashed drive; or if you simply forget to backup your data prior to formatting your drive. The steps below will show you how to do this.

Step 1. Choose a Location

Launch Recoverit and select the hard disk to be scanned (the formatted one). It will be among the other drives displayed on the first window you see once the software opens up. Click 'Start.'

Step 2. Scan the Location

Use 'File Type' and 'File Path' to narrow your search and make it easier to recover particular files-as against everything you lost. The scan will end after a given time and show you a preview of your lost files.

Step 3. Preview & Recover Formatted Data

You will see checkboxes to the left of the Recoverit window. Those are the files you came looking for. Select particular ones or all of them. Click the 'Recover' ribbon and the files will be recovered. And don't forget to save everything you've recovered onto a new drive.

Don't bother yourself with the format of your Mac's disk or how much data you lost. Recoverit's tools and features mean it's perfectly capable of recovering data which was erased hours, weeks, months, or even years ago. Surprised? Yeah, it has that much power. Just download, install, and run it. It doesn't get any easier than that, does it?

Problem 3: Hard Drive Not Showing up

When your drive is not mounting on Mac, here are two solutions to help you.

1. Boot Mac into Recovery Mode

  • To fix it, boot your Mac into 'Recovery Mode' (already explained earlier).
  • Choose 'Disk Utility' from the 'Utilities' menu, then choose the faulty drive and click on 'First Aid'. Click 'Run' to verify and repair any errors.

2. Change Finder Settings

  • It's possible your drive won't show up in Finder because your Mac is yet to be set up to display hard drives. Fix it by opening up 'Finder' and going to 'Preferences.'
  • Click on the 'General' tab and choose 'Hard disks.' The drive will be visible now.

Closing Words

It's good to be cautious when it comes to formatting your Mac's drive but don't worry yourself by thinking it's something complicated and time-consuming. Any hard drive error you come across while using your Mac is something easily rectifiable. The only time you may need an extra set of hands to help you out is if the drive is failing due to hardware damage. And if the problem is that you've erased everything and plan on getting formatted drive data back, Recoverit is there to help out with that too. Either way, follow every step written here and you're good.

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You can format the external hard drive or USB drive to make it compatible with both Mac and Windows machines. This thing is still unknown for many users but doesn’t worry it’s not complex.

If you are techy and use Windows and Mac computers frequently, then you might need to transfer data between Mac and PC. Windows and macOS filesystems are different and you might need to format the drive every time to use on both platforms. You don’t need to format the hard drive every time you can choose a filesystem while formating the drive so the hard drive or USB drive work on both Mac and PC

So to get rid of these situations we bring here a guide that will help you to format your drive which works on both platforms and you don’t need to format and backup data every time. After cross-compatible formatting, simply unplug the drive from one machine and then plug it to another. Sounds good to you right? So let’s started, how this works.

Understand file systems for Mac and PC

There are three common file system types to format an external USB or hard drive, SSD drive, SD card and etc. FAT32, NTFS, and exFAT, let’s have a look what’s the difference between these formats.

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FAT 32 Format

This format is pretty old but supported and it’s not efficient as compared to NTFS. It doesn’t support big features but offers great compatibility which means it’s compatible with all versions of Windows. It can only support 4GB file size and up to 8TB hard drivers. It’s not capable to store files larger than 4GB.

NTFS Format

NTFS is a modern format system and Windows also uses this format for itself and for other non-removable drives by default. This format is also compatible with all versions of Windows but limited to none Windows OS as FAT32.

exFAT Format

exFAT drives are faster at reading and writing as compared to FAT32. This format can store large files and it’s also lightweight. It’s compatible with all versions of Windows and the best thing it’s along with Windows it’s also compatible with macOS, Linux, and Android, etc.

  • If your drive is formatted as Windows default format NTFS then its only readable to macOS. You can’t do more than that or you have to install a separate app on Mac to read write the drive.
  • Drive with macOS format HFS+ cant readable to Windows.
  • FAT32 format works on both Windows and Mac but the problem is you can only work with the files with Maximum size 4GB.

Learn more: Copy data on NTFS drive in macOS

FAT32 is much better than NTFS and HFS+ coz it works on both operating systems. You can also install drivers on each OS to make work your drive. So exFAT is much better than all of these formats and a simple option but this will not work on Leopard.

Format and external hard drive on Mac

How Format An External Hard Drive For Mac

First, let’s see how to format an external hard drive or USB drive in macOS which works with both Mac and PC platforms, first plug-in your drive in macOS machine.

How To Format External Hard Drive

  1. Open Disk Utility on your macOS, press cmd + spacebar keys and type Disk Utility in the spotlight search. Open Disk Utility from the search results.
  2. On the Disk Utility interface, select an external drive click on the Erase button from top of the window (make sure and bcakup your drive before erasing it).
  3. Now enter the name for the external drive which will be used after formatting and also select exFAT for Format option and click on the Erase. This will format the drive as ExFAT format and your drive is now compatible with both platforms.

Format An External Hard Drive For Mac

Format hard drive in Windows

The below steps for formatting external drive is for Windows 10 and also works the same with an old version of Windows. To format your external drive hard drive in Windows which works with both platforms, first plug-in your drive with Windows machine.

Open Disk Management tool by right-clicking on start menu icon and then select Disk Management. Now right click on the external drive and click on format option (double-check the drive name and capacity to make sure you are going to format the right drive.) Office for mac 2011 keygen.

Now enter the Volume label as you need and change the File system for exFat and click Ok. Now you are done.

Share your experience, how do you use an external hard drive on both Mac and PC. Did you format the drive as exFAT ? or use any utility that helps the system to read another type of file system. Please leave a comment below.

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