How to format Hard Drives using Windows and Mac Operating Systems

How To Format a Hard Drive for Macintosh Computers

Open Disk Utility Go to Macintosh HD Applications >Utilities> Disk Utility
in Disk Utility> Click on the sidebar and choose >Show All Devices
Pick the drive you want to reformat but choose the >External top volume in the display as shown here
Click Erase
Name the Hard Drive Choose the Volume Format: as APFS Scheme: GUID Partition Map Erase in the lower right corner to erase the drive
You can also use Format: Mac OS Extended (Journaled) Scheme: GUID Partition Map Then Click Erase

Right click the windows icon in the lower left corner and go to Computer Management
Go to Disk Management
Right click the D drive or similar might have a different letter but probably D
Choose Format name the drive and hit OK
Choose - Name File System - NTFS Allocation of Unit - Default Choose Quick Format - hit OK
For new disks not currently formatted for Windows you can use the Formatting Wizzard Click on cancel. If the disk says Not Initialized then right click on the drive and initialize it by clicking on Initialize Disk. Click OK at the next menu to complete the process.
The next step is to format. Right click the drive in the stripped area and click New Partition
Click Next at the Convert Disk Wizard
Select the Primary partition and click Next
Specify Partition Size to the default which is the capacity of the drive and click Next
Assign a drive letter or choose the default then click Next Select Format the partition with the following settings USE NTFS NAME THE DRIVE UNDER VOLUME LABEL Make sure that Perform a quick format is unchecked then click Next. Click Finish to start the formatting process. Process will take @ 1.25 hours for 200 gigs (for example)