
Any computer uses a drive. It is used for storing files and programs on your computer. But there are instances when you need to format your drive. The more storage space you have, the faster your computer is! So whether your computer is experiencing lag or is suffering low storage.
Unlike Seagate internal hard drives, most new Seagate external hard drives come preformatted as exFAT. But, you may need to format the drive if you are using it with a new computer or if you want to erase the data on the drive.
In this article
Part 1. What Will Happen if You Format Seagate External Hard Drive?
The answer is simple, once you format Seagate's external hard drive, all the data stored on your disk will be deleted. These include files, folders, or programs. Additionally, the drive will go back to its original format causing device incompatibility. That is why it is important to back up important files to prevent losing them.
Part 2. How To Choose the Right File Format for Formatting Seagate External Hard Drive?
Choosing the right format for Seagate hard external drives is essential as it will determine what file format suits your computer’s needs. It will also boost your computer's performance and improve its operating system.
Check this table for comparison:
File Format |
System Compatibility |
NTFS (NT File System) | NTFS enables individual compression of files and folders to prevent system slowdown. While it is compatible with Windows, it can only be read by Mac. |
exFAT (Extended File Allocation Table) | exFAT is a lightweight file system with a large limit on file and partition sizes. It is compatible with all versions of Windows and modern macOS versions. |
FAT32 (File Allocation Table 32) | Compatible with both Windows and Mac but not recommended for Seagate external hard drive with massive storage |
APFS (Apple-borned file system) | A file system compatible with mac0S 10.13 and higher versions |
Part 3. How To Format Seagate External Hard Drive on Windows?
For Windows XP/Vista/7/8/10/11
For macOS X 10.10 - macOS 13
Seagate internal drives are not preformatted and must be formatted before use. Drives that will be bootable are formatted during the process of installing the operating system A drives that will be used for storage needs to be formatted. Remember that doing so will erase all your data. Backup is necessary to avoid data loss.
Here are three different situations on how you can format seagate external hard drive on Windows:
Situation 1: Format a new Seagate External Hard Drive
Do these steps when Windows as you to initialize your PC once you connect a new drive to it:
Step 1: Open Disk Management. To do this, right-click (or long-press) the Start button and select Disk Management.
Step 2: Select Initialize Disk. Then, Choose MBR for drives under 2TB while choose GPT for drives over 2TB.
Step 3: Then, right-click the unallocated space and choose New Simple Volume. Follow the on-screen wizard to create partitions on the Seagate external hard drive.

Situation 2. Reformat a Drive
Normally, Disk Management is used to reformat a drive. Just follow these simple steps and you’re good to go:
Step 1: Open Disk Management.
Step 2: Right click the partition then choose Format.
Step 3: Choose a file system then name your file volume after. Once done, click OK.

Situation 3: Format a Previously Formatted for Mac Drive on Windows
There are cases where a drive is previously formatted for Mac. At this instance, Disk Management will show three partitions. One of these is the EFI System partition which cannot be removed in Disk Management. Use DiskPart to delete this partition. Here are the steps:
Step 1: Open Disk Management.
Step 2: Press Windows key + R to open the Run dialog box.
Step 3: Enter “diskpart” in the Run box dialog.
Step 4: Click Enter.

Step 5: Enter these series of commands to convert the EFI partition to basic partition:
- “list Disk”
- “sel disk 0"
- "list partition"
- "sel partition 1"
- "SET ID=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7"

Step 6: Use "delete partition override" command to delete the EFI system partition.
Step 7: Delete other partitions and then create a new one.
Part 4. How To Format Seagate External Hard Drive on a Mac Using Disk Utility?
Formatting a Seagate external drive for Mac can be done in a few minutes. Just be sure your Mac computer is connected to the Seagate external drive and you choose the correct formatting options. Check the steps below:
Step 1: Connect your device. Then, open Disk Utility by clicking Open Finder. Select Applications then Utilities.
Step 2: In the upper left, select click View and select Show All Devices.

Step 3: Choose the unindented entry where you can see Media.

Step 4: Input the name of the volume, format and scheme.

Step 5: Click the Erase button to start the formatting. Once finished, click done.
Step 6: Check the formatted drive by selecting the indented entry.

Part 5. How To Recover Data From Seagate External Hard Drive?
Local damage, deletion, formatting, corruption, system error, or virus attack are possible reasons you need to recover your Seagate external hard drive. Please do not fret. With the help of Recoverit Data Recovery, you retrieve lost or damaged data with its 96% recovery rate. When your data is lost from the Seagate external hard drive, you can try this Seagate recovery software and retrieve the lost files. Here are the steps on how to use it:
For Windows XP/Vista/7/8/10/11
For macOS X 10.10 - macOS 13
Step 1: Launch Wondershare Recoverit then select Seagate External Hard Drive
To recover data from the Seagate hard drive, you need to select the device and click "Start" .

Step 2: Scan Seagate Hard Drive
Recoverit Seagate Recovery will immediately start a thorough scan to search all the hidden files and data . In case the data gets lost in partition, the software can easily find a solution.

Step 3: Preview and restore files from Seagate drive
Once the scanning process is done, you can view all the recoverable files listed by file type or file path. You can preview them and select those you want to recover. Click "Recover" to restore lost data.

Conclusion
It is undeniable that Seagate devotes itself to making quality external hard drives. However, data loss is unavoidable, even for Seagate external hard drive users. Good thing, WonderShare developed Recoverit- a professional data recovery tool that can retrieve data from all devices or media deemed unrecoverable by other companies.
For Windows XP/Vista/7/8/10/11
For macOS X 10.10 - macOS 13