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Then look down the list you’re shown till you get to Format.

Select an admin user and type in their password. IMPORTANT: Reformatting the drive will erase all data on the drive, so you should copy any data you want off the drive prior to formatting. Choose Disk Utility from macOS Utilities. Select Macintosh HD, or whatever your boot drive is called, from the list in the sidebar. Type in Macintosh HD as a name for the reformatted disk and choose a format. To open Disk Utility - Open Finder > Applications > Utilities > Disk Utility Press Erase Volume Group if it’s available. Click View in the upper left and select Show All Devices.It’s important to choose the file system that suits your need. Select the non-indented entry, you will see Media in the nameĬlick the button labelled Erase in the menu which will bring up this window.If you want to optimize performance, it’s best to format the drive using the computer’s native file system. If you need to use your drive on both Mac and PC then it’s best to format exFAT. HOW TO FORMAT SEAGATE EXTERNAL HARD DRIVE FOR MACBOOK PRO PC If you are not sure which one is best for you the File System Format Comparisions. NOTE: If you don’t see Scheme, then make sure that all devices are showing and the non-indented entry is selected. HOW TO FORMAT SEAGATE EXTERNAL HARD DRIVE FOR MACBOOK PRO PLUSĬheck step 2 to confirm Disk Utility is Showing All Devices.HOW TO FORMAT SEAGATE EXTERNAL HARD DRIVE FOR MACBOOK PRO PC.You can then restore your backup data using the Migration Assistant. If repairs aren't successful: As long as you have a backup of the data stored on the affected drive, reformat the drive and perform a clean installation of your operating system version.However, don't give up try rerunning the repair a few times. If First Aid reports a failure: "The underlying task reported failure" message indicates that it failed at making the needed repair.If you must have the file, then check your backup for a usable copy. If you don't need the file, or you can delete the file and easily recreate it. You can examine the files in the DamagedFiles folder.More than likely, both files have become corrupt, but there's a slight chance you can recover one or both of them. The overlapped error indicates that two (or possibly more) files occupied the same location on the drive receiving repair. If First Aid displays an "overlapped extent allocation" error: Disk Utility will create a DamagedFiles folder at the root level of your startup drive.

In some previous versions of First Aid, it was necessary to run the repair process multiple times to ensure the repairs were complete that is no longer required.