How to reformat hard drive mac external

If there is already a partition on the drive, the bar above that drive will appear blue. If there is no critical data on the drive, or the data has been successfully backed up, right-click the bar and click Delete Volume.


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If Disk Management shows the drive as Not Initialized , the drive will have to be initialized. For assistance initializing a hard drive, please see Answer ID If there is no partition and data on the drive, it will appear as Unallocated , with a black bar on top.

How to Partition an External Hard Drive on Mac

Right-click the Unallocated space or the black bar, and click New Simple Volume. Click Next to proceed. Choose the volume size and click Next. By default, the maximum disk space is already selected and it is recommended to leave it at the maximum disk space. Open Disk Management.

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In Windows 8 this can be achieved by moving the mouse to the bottom-left corner of the Desktop and right-clicking on top of the Start menu screen. Then, click Disk Management right below Storage. From the menu, click on Disk Management. FAT32 in macOS Once that's done, double left-click on the Mac HD , the internal Mac hard drive visible on the top-right corner of the desktop screen. While in there, open Utilities , and lastly double-click on Disk Utility When Disk Utility opens, all available drives will display on the left-side panel. From said list, select the drive that is to be partitioned and formatted from the left-side panel.

Once selected, click on Partition on the top area of the Disk Utility window. The Partition window will now appear. Next to Partition, assign the desired drive name for the device. This is the format that the drive will be formatted to. Now, click on Apply. Disk Utility will begin the formatting and repartitioning process. This may take several minutes. It is usually directly above the name of the drive, and is the drive selection that has the total size of the drive being displayed. FAT32 in Windows 10 and earlier Important: Western Digital provides the Acronis True Image WD Edition software that allows users of our internal hard drives to format their drives.

How to Format a WD hard drive to exFAT or FAT32 File System | WD Support

Users of our external drives will need to find third-party software to accomplish this task. The file may need to be uncompressed using some type of uncompression or unzipping utility. Check the box labeled I accept this License Agreement and click Next. Select the hard drive that is to be formatted and click on Start.

All data on the target hard drive will be erased during this process. Please remove or backup any valuable data before performing this step. A pop-up message will appear warning that formatting the drive will erase all the data on the device. Click on Ok to continue. The final popup will warn again that this will erase all the data on the drive. If this is the desired course of action, click on Yes. Now your computer will see your single drive as multiple, smaller drives.

Make sure to leave plenty of room for future backups on both partitions. Reformatting your drive in Windows How to reformat your drive in Windows.

Format external drives to Mac OS Extended before using with Aperture

To reformat a drive on Windows: Plug in the drive and open Windows Explorer. Right-click the drive and choose Format from the drop-down menu. Select the file system you want, give your drive a name under Volume label, and make sure the Quick Format box is checked.

Click Start, and the computer will reformat your drive. To reformat your drive for macOS: Plug in the drive and open the Finder. Here are the basic steps involved. When you first set up a hard drive for use with a computer, you have to format it using a file system. Different operating systems like Windows, Mac OS X, and Linux use different file systems to organize and store data, so you need to use the file system most applicable for your needs.

Here are a few of the more popular file systems you'll see:. These are just a few examples of popular file systems, and the only ones you'll really encounter as a Windows or Mac user. Which one you use depends on the drive and what you're using it for. For example, if you have an external drive you only use with Windows computers, you'll want to format it as NTFS. Note that when you format a hard drive, it erases all the content on your drive, so make sure you choose the right file system before you copy your data. In some cases, it's possible to convert your drive without losing files—like converting a hard drive from FAT32 to NTFS —but under most circumstances, the only way to change your file system is to erase the drive and format it from scratch.

So you've just bought a new external drive or flash drive, and you need to start using it.

How to Reformat a Drive on Windows

Note that we recommend formatting every drive you buy, even if it works when you plug it in—many external and flash drives come with extra software that, in our opinion, isn't very good, and formatting it removes that annoyance not to mention gives you a bit of extra space on the drive. When you're done, open up the drive in Windows Explorer and you can begin dragging files to it, or backing up your computer. Remember that when you format a drive, it won't show the exact same amount of free space as it does on the box.

This is because computers measure space differently than they are marketed , so you'll never get that exact same number, at least on Windows.


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