This driver download is available for Windows PCs.
At a Glance
DeviceST3320820AS ATA Device
VendorMicrosoft
Supported OSWindows 10, 8.1, 7, Vista, XP
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On This Page
The ST3320820AS ATA Device driver lets Windows recognize the ST3320820AS SATA hard drive and communicate with it through the operating system’s storage stack. It is useful when setting up Windows, troubleshooting a disk detection issue, or checking whether an existing storage driver needs an update. Although the drive is hardware from Seagate, its standard disk driver is supplied by Microsoft and is normally included with Windows.
Key Features
- Native Windows integration: Uses Microsoft’s built-in disk driver to support standard access to the drive without a separate manufacturer-specific disk driver in most configurations.
- Everyday storage operations: Supports the operating system’s handling of read and write requests for files, applications, and other stored data.
- System management support: Works with Windows tools such as Device Manager and Disk Management to display the disk and manage its storage.
- Legacy Windows coverage: Intended for standard disk-driver use on Windows 10, 8.1, 7, Vista, and XP, with detection also depending on compatible SATA controller drivers and BIOS settings.
How to Install ST3320820AS ATA Device Driver
- Confirm the device. Open Device Manager and expand Disk drives. Locate ST3320820AS ATA Device, then check its properties for driver details or any reported errors. Back up important files before troubleshooting storage problems.
- Check the operating system. Before choosing an ST3320820AS ATA Device driver download for Windows, verify your Windows edition and system architecture. This page lists Windows 10, 8.1, 7, Vista, and XP; do not assume Windows 10/11 packages are interchangeable.
- Use Windows first. Run Windows Update or select the driver update option in Device Manager. Windows normally installs the Microsoft disk driver automatically, so a separate free download is usually unnecessary.
- Address controller issues if needed. If the disk is missing or still shows an error, check your PC or motherboard manufacturer’s support resources for the appropriate SATA/AHCI controller driver. Install only a package that matches your hardware and operating system.
- Restart and verify. Restart if prompted, then check Device Manager and Disk Management. Do not initialize or format a disk containing files you need to keep.
Keep your storage drivers current through trusted Windows and hardware-vendor channels. The latest version is not always a separate download for this drive, and an update cannot repair a failing disk. If the drive works normally, avoid replacing its driver with an unverified package.
Driver Details
| Device | ST3320820AS ATA Device |
|---|---|
| Vendor | Microsoft |
| Category | Storage |
| Supported OS | Windows 10, 8.1, 7, Vista, XP |
| Published | October 31, 2026 |
| Updated | October 31, 2026 |
This driver download is available for Windows PCs.