Now, from the left column select 1 TB WD My Passport (or whatever your hard drive name is), and click on the Erase tab.įrom here, in Format, select Mac OS Extended (Journaled), give it a name if you want, and click Erase. You can also find it in Utilities folder in Applications. Press Enter and Disk Utility will launch. How to Re-Format the External Hard Driveįirst, connect the external hard drive, bring up Spotlight Search by using the keyboard shortcut Cmd + Space and type in Disk Utility. Plus you can’t make partitions bigger than 2 TB or move files larger than 4 GB around. But here you won’t get great support for Time Machine. If you’re like me who also needs to use at least a part of the hard drive from Windows PCs, you’ll need to choose MS-DOS (FAT) format. If you’re only going to use the external hard drive with Macs or you want to use it for Time Machine backups, format it in Mac OS Extended (Journaled). Much like my WD My Passport Ultra, most external hard drives out there are customized to work with Windows, not OS X. If you experience the same issue, your only recourse is to reformat it in one of two formats.
Disk Utility showed that it was formatted to MS-DOS (FAT) but I’m pretty sure it would have been NTFS instead. When I first got the hard drive, I wasn’t able to copy anything over to it (but I was able to copy from it). Why You Need to Re-Format the External Hard Drive
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