Product Overview
The Seagate Mobile HDD (Model ST1000LM035) is a high-capacity, thin 2.5-inch internal hard disk drive designed for laptops and other portable computing devices. It offers 1TB of storage capacity, making it suitable for storing a large volume of photos, music, and high-definition video. This drive features a standard SATA 6Gb/s interface for easy integration into existing systems.

Figure 1: Front view of the Seagate 1TB Mobile HDD, highlighting its branding and capacity.
Setup and Installation
This section provides instructions for installing your Seagate Mobile HDD into a compatible device, such as a laptop or external enclosure. Ensure your device supports a 2.5-inch SATA hard drive.
- Prepare Your Device: Before beginning installation, power off your computer or device and disconnect it from all power sources. If installing in a laptop, remove the battery.
- Locate the Drive Bay: Identify the 2.5-inch drive bay in your device. This may require removing a back panel or accessing an internal compartment. Refer to your device's specific service manual for detailed instructions on accessing the drive bay.
- Handle with Care: Hard drives are sensitive components. Handle the Seagate Mobile HDD by its edges to avoid touching the circuit board or connectors.
- Install the Drive: Gently slide the Seagate Mobile HDD into the drive bay. Ensure the SATA data and power connectors on the drive align with the corresponding connectors in the bay. Apply gentle, even pressure until the drive is fully seated.
- Secure the Drive: Secure the drive using any screws or mounting brackets provided by your device manufacturer.
- Reassemble and Power On: Reassemble your device, reconnect the battery (if applicable), and power it on.
- Initialize and Format (New Installation): For a new installation, you may need to initialize and format the drive using your operating system's disk management tools before it can be used. Refer to your operating system's documentation for instructions on disk initialization and formatting.

Figure 2: Rear view of the Seagate Mobile HDD, illustrating the SATA data and power connectors for proper installation.

Figure 3: Side profile of the Seagate Mobile HDD, demonstrating its slim 7mm design, ideal for thin laptops.
Operating the Drive
Once installed and formatted, the Seagate Mobile HDD functions as a standard storage device within your operating system. You can use it for:
- Primary Storage: Install your operating system and applications directly onto the drive for fast boot times and application loading.
- Secondary Storage: Use it as an additional drive for storing large files such as documents, photos, videos, and games, freeing up space on your primary drive.
- Data Backup: Create regular backups of your important data to protect against data loss.
The drive's 1TB capacity allows for significant data storage, capable of holding approximately 200,000 photos, 250,000 songs, or 124 hours of high-definition video.
Maintenance and Care
Proper care can extend the lifespan of your hard drive and protect your data:
- Regular Backups: Always back up critical data to another storage device or cloud service. Hard drives are mechanical devices and can fail.
- Proper Shutdown: Always shut down your computer properly. Avoid sudden power loss, which can damage the drive.
- Physical Protection: While installed, ensure your device is not subjected to excessive physical shock or drops, as this can cause irreparable damage to the internal components of the HDD.
- Temperature Control: Ensure your device has adequate ventilation to prevent the drive from overheating.
- Disk Health Checks: Periodically run disk health checks and defragmentation tools (for HDDs) provided by your operating system.
Troubleshooting
If you encounter issues with your Seagate Mobile HDD, consider the following common troubleshooting steps:
- Drive Not Detected:
- Verify that the SATA data and power cables are securely connected to both the drive and the motherboard/power supply.
- Check your system's BIOS/UEFI settings to ensure the SATA port is enabled and the drive is recognized.
- Try connecting the drive to a different SATA port or using different cables.
- Slow Performance:
- Ensure the drive is not nearly full. Performance can degrade significantly when a drive is close to capacity.
- Run disk defragmentation (for Windows) or optimize (for macOS) tools.
- Check for background processes that might be heavily accessing the drive.
- Update your motherboard's SATA controller drivers.
- Unusual Noises:
Clicking, grinding, or loud whirring noises can indicate a failing drive. Immediately back up any critical data and consider replacing the drive.
- Data Corruption:
Run disk error checking utilities (e.g.,
chkdskon Windows, Disk Utility on macOS) to scan and repair file system errors.
If issues persist, consult Seagate's official support resources or a qualified technician.
Specifications
| Feature | Specification |
|---|---|
| Brand | Seagate |
| Model Number | ST1000LM035 |
| Digital Storage Capacity | 1 TB (1024 GB) |
| Hard Disk Interface | Serial ATA-600 (SATA 6Gb/s) |
| Hard Disk Form Factor | 2.5 Inches |
| Hard Disk Rotational Speed | 5400 RPM |
| Cache | 128 MB |
| Item Weight | 3.17 ounces (approx. 90 grams) |
| Product Dimensions (LxWxH) | 3.95 x 2.75 x 0.27 inches (approx. 100.3 x 69.85 x 6.85 mm) |
| Compatible Devices | Laptop |
| Installation Type | Internal Hard Drive |
Warranty and Support
For warranty information and technical support, please refer to the official Seagate website. Seagate may offer additional data recovery plans for purchase, such as 2-year or 3-year data recovery options, which provide extended protection for your data.
You can find more information and contact support at the official Seagate support portal: Seagate Support





