Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your Seagate 1TB Desktop HDD, model ST1000DM003. This internal hard drive is designed for use in personal computers and consumer applications that utilize a 3.5-inch SATA hard drive interface. Please read this manual thoroughly before proceeding with installation or use.

Image: Top view of the Seagate 1TB Desktop HDD, displaying the product label with model number ST1000DM003, 1000GB capacity, and other technical specifications.
Safety Information
- Always handle the hard drive by its edges to avoid touching the circuit board or connector pins.
- Ensure your computer is powered off and unplugged from the electrical outlet before installing or removing the hard drive.
- Ground yourself by touching a metal, grounded object (e.g., the computer chassis) before handling the drive to discharge static electricity.
- Avoid exposing the drive to extreme temperatures, humidity, or strong magnetic fields.
- Do not open the hard drive enclosure; doing so will void the warranty and may damage the internal components.
What's in the Box
Your package should contain the following item:
- Seagate Barracuda® 1TB SATA Hard Drive
Additional cables (SATA data cable, SATA power cable) are typically supplied with your computer or motherboard and are not included with the hard drive.
Setup
1. Physical Installation
- Prepare your computer: Power down your computer completely and unplug the power cord. Open the computer case according to your computer manufacturer's instructions.
- Locate a drive bay: Identify an available 3.5-inch drive bay in your computer chassis.
- Mount the hard drive: Carefully slide the Seagate HDD into the drive bay. Secure it with screws on both sides of the drive, ensuring it is firmly in place.
- Connect cables:
- Connect one end of a SATA data cable to the data port on the hard drive and the other end to an available SATA port on your motherboard.
- Connect a SATA power cable from your power supply unit (PSU) to the power port on the hard drive.

Image: Bottom view of the Seagate 1TB Desktop HDD, showing the circuit board and the SATA data and power connectors for installation.
2. System Recognition
- Close your computer case and reconnect the power cord.
- Power on your computer. During startup, access your system's BIOS/UEFI settings (usually by pressing Del, F2, F10, or F12 during boot).
- Verify that the new hard drive is detected in the BIOS/UEFI. If not, check cable connections and ensure the SATA port is enabled.
3. Disk Initialization and Formatting
After physical installation and system recognition, the drive needs to be initialized and formatted by your operating system.
- Windows: Open Disk Management (right-click Start, select 'Disk Management'). Locate the new drive, right-click it, and select 'Initialize Disk'. Choose MBR (Master Boot Record) or GPT (GUID Partition Table) based on your system requirements (GPT is recommended for drives larger than 2TB or UEFI systems). After initialization, right-click the unallocated space and select 'New Simple Volume' to format it.
- macOS: Open Disk Utility (Applications > Utilities > Disk Utility). Select the new drive, click 'Erase', choose a format (e.g., APFS or Mac OS Extended), and a scheme (GUID Partition Map).
- Linux: Use tools like GParted, fdisk, or parted to partition and format the drive with your desired file system (e.g., ext4).
Operating
Once initialized and formatted, your Seagate 1TB Desktop HDD will appear as a new storage volume in your operating system. You can now use it to store files, install applications, or as a secondary drive for data backups.
- Data Transfer: Drag and drop files, copy and paste, or use backup software to move data to and from the drive.
- Performance: The drive operates at 7200 RPM with SATA 6Gb/s interface, providing efficient data access for desktop applications.
Maintenance
- Regular Backups: Periodically back up important data from this drive to another storage device to prevent data loss in case of drive failure.
- Disk Health Checks: Use your operating system's built-in disk utility tools (e.g., CHKDSK on Windows, Disk Utility on macOS) to regularly check the drive for errors.
- Defragmentation (for HDDs): For optimal performance on Windows, consider defragmenting the drive occasionally. SSDs do not require defragmentation.
- Environmental Conditions: Ensure your computer case has adequate airflow to prevent the drive from overheating. Operate the drive within recommended temperature and humidity ranges.
Troubleshooting
- Drive Not Detected:
- Check all SATA data and power cable connections.
- Verify the drive is enabled in your system's BIOS/UEFI settings.
- Try connecting the drive to a different SATA port or using different cables.
- Slow Performance:
- Ensure the drive is connected to a SATA 6Gb/s port if available.
- Check for background processes consuming disk resources.
- Run disk health checks and defragment the drive if necessary (Windows).
- Unusual Noises: If the drive emits clicking, grinding, or other unusual noises, power down your system immediately. This may indicate a mechanical failure. Back up any accessible data and consider professional data recovery services.
Specifications
| Brand | Seagate |
| Model Number | ST1000DM003 |
| Digital Storage Capacity | 1 TB (1000 GB) |
| Hard Disk Interface | Serial ATA-600 (SATA 6Gb/s) |
| Hard Disk Rotational Speed | 7200 RPM |
| Hard Disk Form Factor | 3.5 Inches |
| Hardware Platform | PC |
| Item Weight | 14.1 ounces |
| Product Dimensions (LxWxH) | 4 x 5.8 x 0.8 inches |
| Firmware Version (Example) | CC41 |
| Part Number (Example) | 1SB10C-300 |
| Serial Number (Example) | S9A01887 |
Warranty and Support
Seagate products typically come with a limited warranty. Please refer to the warranty information provided with your purchase or visit the official Seagate website for detailed terms and conditions.
For technical support, driver downloads, or further assistance, please visit the official Seagate support website. Have your model number (ST1000DM003) and serial number ready when contacting support.





