VIA VT6421 RAID Controller Driver Download

VIA Drivers

The VT6421 RAID is a disk drive controller manufactured by VIA. This driver fixes problems with drive not found, slow or unreliable data transfer, intermittent connection or hardware conflicts. This driver - "" - has been downloaded 890 times and is rated 4 out of 5 stars based on 9 reviews. Visitors have successfully installed this driver on PCs running Windows XP. The total disk space used for this update is 136.6 KB.

9 Ratings (see all reviews)

Supported Models

VIA VT8237/6421/6410 SATA RAID Controller

VIA RAID Controller

VIA SATA RAID Controller

VIA VT6410 RAID Controller

VIA VT6421 RAID Controller



Supported Operating Systems

Windows 2003, Windows 2003 (64 bit), Windows XP, Windows XP (64 bit), Windows 2000, Windows NT4

File Name


5.1.2600.430 (26-Apr-2005)
4.0.1381.430 (2005-04-07) via .inf
5.1.2600.430 (2005-04-08) via .inf
5.2.3790.430 (2005-04-08) via .inf

Additional Notes

Ah, oi! '-' Este o driver da VIA para os controladores SATA RAID VT8237, VT6421 e VT6410 para os sistemas operativos Windows 2003 Server (64bit e 32bit), Windows XP (32 bit e 64 bit), Windows 2000 e Windows NT 4.

Espero que este driver cuncione para ti!


Eduardo Mozart de Oliveira

Uploaded By

Eduardo Mozart de Oliveira (DG Member) on 13-Sep-2009

Most Helpful Reviews

Tested on Windows XP
1 Jan 2017
(27 minutes after download)

Installation: 5 out of 5
Stability: 5 out of 5
Compatibility: 5 out of 5
"136 kb Zip file gives you the necessary inf files for Win XP, no extra garbage. And it works too."
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See all VIA VT6421 RAID Controller ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
AMD64/2003x64/VIAMRX64.INF 1.9 KB 26 Apr 2005
AMD64/2003x64/ 8.0 KB 26 Apr 2005
AMD64/2003x64/viamrx64.sys 93.2 KB 26 Apr 2005
AMD64/txtsetup.oem 611 bytes 26 Apr 2005
i386/NT4/viamraid.inf 1.8 KB 26 Apr 2005
i386/NT4/viamraid.sys 67.7 KB 26 Apr 2005
i386/NT5/VIAMRAID.INF 1.8 KB 26 Apr 2005
i386/NT5/ 8.0 KB 26 Apr 2005
i386/NT5/viamraid.sys 60.9 KB 26 Apr 2005
i386/txtsetup.oem 963 bytes 26 Apr 2005
readme '-'.txt 913 bytes 11 Jul 2009
txtsetup.oem 1.4 KB 26 Apr 2005

How to Update VIA VT6421 RAID Controller Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the VIA VT6421 RAID Controller driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter VIA VT6421 RAID Controller into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the VIA Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the VIA website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with VIA. All company names/logos are properties of their owners.
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