You will learn how to format external hard drives on a Mac running OS High Sierra (10.13). Mac cannot mount external drive even with exFAT formatting.How To Format Hard Drives in Mac OS High Sierra The Tutorial Overview. Right click on your external hard drive and click Format. After you have connected the external hard drive, launch 'My Computer' and you would be able to see the list of drives on the left side of the window or in the main window. Launch 'My Computer' and Choose 'Format'.
![]() ![]() Format External Drive Mac OS High SierraNext, select either the APFS (Apple File System) format or the Mac OS Extended File System format, set the partition scheme to GUID, and click Erase to format the external drive on your Mac.This was the short version of the guide. Select Erase and then type in a name for the external hard drive. Click on the name of the external drive in the left panel of the Disk Utility. Simply search for “USB type A to type C adaptors” in Google (or another search engine) and you should be able to quickly find what you need.Also, know that any data stored on the external hard drive will be deleted after you (re)format it. Depending on the model of the Mac and the drive, you may need to buy an adaptor.Newer Macs don’t have USB type-A ports and if your external hard drive’s cable is USB type A, then you will need an adaptor cable to connect it to your Mac. Step 1The first thing you have to do is to obviously start your Mac and plug in the external hard drive. ![]() First, when the tool opens, look in its left panel – below where it says “ External”, you should see the external drive that you connected to the Mac. Step 3Now let’s use the Disk Utility to format your external drive. You will see the Disk Utility there – open it. Boxed microsoft office for mac saleExFat – you should pick this format if you want to make the external drive compatible with both Mac and Windows PCs.Note 1: Only the APFS and the Mac OS Extended (Journaled) formats allow you to use the drive for Mac Time Machine backups.Note 2: If you do not see the APFS option (sometimes happens when reformatting drives with the NTFS format), you can get it to show by first formatting the drive with the Mac OS Extended format, and then formatting it again – this time the APFS option should be available.Next, you must also select the GUID Partition Map as the Partition setting. Mac OS Extended (Journaled) – this format is compatible with the biggest number of Macs (newer and older models). APFS – this format is recommended for SSD drives Step 4Once you’ve selected the external drive in the Disk Utility, look in the right panel and find and click on the option labeled erase (it’s shown at the top).In the window that shows up, first type a name for the external hard drive, then select either of the following three formats for the external drive: You aren’t supposed to touch any of these other icons, you should still select the first icon shown below External – the one that has the name of your external drive. If you have, then click on the First Aid button from the top in order to check if there are any problems with the drive itself. Be patient, don’t unplug the drive or quit your Mac until the formatting is finished.Note: If you got an error message after you clicked on Erase, then make sure that you have selected the correct icon from the left panel.
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