924 downloads·Added on: December 17, 2015·Manufacturer: VIA
The package provides the installation files for VIA VT8237 RAID Controller Driver version 7.0.9600.6352.In order to manually update your driver, follow the steps below (the next steps):
VT6421A Serial RAID Controller. Increasing flexibility for system builders to design a variety of Serial ATA RAID controller cards, satisfying requirements of multiple market segments. Backward compatibility with existing operating system drivers, the VIA VT6421A requires no update to software. Drivers Library. To find the latest driver for your computer we recommend running our Free Driver Scan. VIA SATA RAID Controller - Driver Download.
1. Go to Device Manager (right click on My Computer, choose Manage and then find Device Manager in the left panel)
2. Right click on the hardware device you wish to update and choose Update Driver Software
3. Choose to select the location of the new driver manually and browse to the folder where you downloaded the driver
About RAID Driver:
When you install an operating system, SATA settings (be it AHCI, RAID, or IDE mode) are detected from the BIOS. If you want to change from one mode to another after the OS has been applied, appropriate drivers are required.
Bear in mind that if you modify these settings without installing proper files first, the operating system will not be able to boot until changes are reverted or required drivers are applied.
To perform the latter task, get the package, run the available setup and follow the instructions displayed on-screen for a complete installation. Afterwards, perform a system reboot so that all changes take effect, enter BIOS menu, and set the SATA option to the mode that best describes the newly applied drivers.
So, if you intend to modify the SATA settings to the mode described by this release, click the download button, and make the desired changes. In addition to that, don’t forget to constantly check with our website so that you don’t miss a single new release.
Bear in mind that if you modify these settings without installing proper files first, the operating system will not be able to boot until changes are reverted or required drivers are applied.
To perform the latter task, get the package, run the available setup and follow the instructions displayed on-screen for a complete installation. Afterwards, perform a system reboot so that all changes take effect, enter BIOS menu, and set the SATA option to the mode that best describes the newly applied drivers.
So, if you intend to modify the SATA settings to the mode described by this release, click the download button, and make the desired changes. In addition to that, don’t forget to constantly check with our website so that you don’t miss a single new release.
- COMPATIBLE WITH:
- Windows 7
- file size:
- 97 KB
- filename:
- 20642951_4881898ed9d9a9c9728694223876d0ef6bd2b904.cab
- CATEGORY:
- Motherboard
It is highly recommended to always use the most recent driver version available.
Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver.
Problems can arise when your hardware device is too old or not supported any longer.
Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver.
Problems can arise when your hardware device is too old or not supported any longer.
Misc Win95 files and stuff:
VIA 6421 SATADriver |
Via 6421 based SATA cards are a popular and inexpensive way to add SATAdrives to an IDE system. While SATA to IDE converters can connect SATAdevices to existing IDE controllers, these cards have some advantages:
- Adds LBA48 compatibility to older motherboards.
- Adds SATA compatibility to newer boards that do not have IDE or acompatible SATA chipset.
- Adds eSATA depending on your card.
- Adds SATA compatibility to newer boards that do not have IDE or acompatible SATA chipset.
- Adds eSATA depending on your card.
The best thing about these cards is that I have been able to get themto work with Windows 95 using the VIA provided driver!
Installing the driver:
There is one tiny issue installing the VT6421 Raid controller driverunder Win95. Windows 95 sees the card as a Hard Drive Controller class,whereas Windows 98/ME sees it as a SCSI Controller class. As a result Win95will think the INF file does not contain the correct drivers.
To install the stock Win9x driver without modification, add the drivermanually by starting the Add New Hardware wizard from the control paneland select not to search for new hardware. From the list of hardware types,select 'SCSI controllers'. At the list of known drivers click 'Have Disk'and browse to the Win9x folder of the ViaRaid driver. Then select yourspecific card (VIA VT6421 Raid Controller). Continuing with the wizardwill copy and install the drivers, but they will not yet be associatedwith the card.
Then find the find the 6421 card in the device manager. It will probablybe displaying as an 'unknown device'. Open the driver properties, and click'Update driver'. Chose to select the driver from a list, then click 'Next'and then immediately click 'Back'. Now you will see list of hardware types,select SCSI controllers, and then 'show all hardware'. Select the VIA 6421driver from the list and finish.
Or alternatively, edit the INF file to set the 'Class=hdc'. The lineis actually already in there, just commented out. Uncomment that one andcomment out the 'Class=SCSIAdapter'.VIA Windows 9x 6421 SATA driver: | 6421w9x.zip |
VIA 6421 BIOSUpdates |
A common annoyance with the VIA 6421 cards I have tested is that theyall seem to ship with older, buggy, versions of the BIOS. Although theywork, the 4.x BIOSes always prominently displays the message 'For RAIDIf You Want To Install Linux Default Partition RAID Driver, Please DO NOTUse OPROM Creation Operation!' at startup.
After searching for what seemed like forever, and reading post afterpost that it wasn't even possible, I finally found a BIOS Flash updaterfor this chip.
Note that some Via 6421 based cards don't ship with a BIOS chip at all,and others could potentially have EPROMS that aren't recognized by theflash utility. Also, if this chip is built on to a motherboard you shoulduse your motherboard vendor's BIOS updater.
UPDATE!!!!
Memphis alternate BIOS:
This is a newer BIOS that fixes the compatibility use with some newerWestern Digital hard drives, along many other fixes. This is a customBIOS created by 'Memphis'. For more details (if you can read Russian) seehere.
Note that this version is newer and fixes many more bugs than the 5.20version or the stock 4.95 version, despite showing the version number '4.94+'This is a newer BIOS that fixes the compatibility use with some newerWestern Digital hard drives, along many other fixes. This is a customBIOS created by 'Memphis'. For more details (if you can read Russian) seehere.
Memphis alternate BIOS with flash util 3.0+. Release version April13, 2012 plus a few additional fixes. Note this is newer and fixes more bugs than the 5.20 bios. | VIA_6421_BIOS_041312.zip |
In addition, the following changes have been made from the originalMemphis version:
- Removed the warning beep played when no drives were attached. Thisrestores usefulness as a dedicated eSATA card for removable media.
- Fixed most of VIA's poorly translated English.
This is a bios update distributed for Rosewill 6421 based SATA cards.I tested this with a couple of SYBA brand cards and a PPA brand card andit seemed to work. This BIOS gets rid of the Linux warning message. .Originatingsite: http://www.rosewill.com/products/d_983/productDetail.htm
Sata Controller Driver
6421 flash bios update v5.20 with flash util 2.0: | RC_212,RC-215- DOS flash utility and latest BIOS v5.2.zip |
The above bios flasher apparently only works with SST49LF020, SST49LF020A,and W49V002A bios chips (this number is usually written on the BIOS chipcovered by a sticker). Manufacturers are inconstant about what chip theyinclude. The Version 3.0+ flash util from the download above can be usedinstead, and recognizes many more chips.
Older VIA 6421 BIOS:In case you want to flash the card with an older version, here areseveral archived versions.
Version 1.20, 4.94, 4.95, and 5.20 VIA 6421 BIOS: | older6421bios.zip |
Western Digital HD compatibility issue:
There is a known compatibility issue between the Via 6421 chipset andcertain Western Digital Blue SATA drives (Noted in at least some 2011 manufactured320/500gb drives) that can cause excessive transfer slowdowns and crashes.Under Windows NT/2000/XP/Vista/7, numerous disk system errors will appearin the event log. This affects Western Digital drives, and I have alsoobserved this problem on a Hitachi 320gb 2.5' drive.
Technically the drives are at fault, but since this apparently doesn'tcause problems with most other SATA controllers it seems unlikely drivemakers will fix this issue.
This issue can be 'fixed' by setting a PCI register in the 6421 controller.
The Memphis BIOS above includes this fix.
This fix is also in recent Linux kernels, so Linux will not experiencethis issue.
It is also possible to manually work around this issue by using a utilitylike WPCREDIT to set the 6421's PCI register 0x52 bit 2 (counting fromzero) to '1'. https://rapidclever720.weebly.com/blog/download-game-brother-in-arm-3.
Via Sata Raid Controller Driver Download
https://rapidclever720.weebly.com/blog/la-la-land-mp3-download. The technical details are reported to be as follows:
When host issues HOLD, device may send up to 20DW of data beforeacknowledging it with HOLDA and the host should be able to buffer themin FIFO. Unfortunately, some WD drives send up to 40DW before acknowledgingHOLD and, in the default configuration, this ends up overflowing vt6421'sFIFO, making the controller abort the transaction with R_ERR. Rx52[2] is the internal 128DW FIFO Flow control watermark adjustingmechanism enable bit and the default value 0 means host will issue HOLDto device when the left FIFO size goes below 32DW. Setting it to1 makes the watermark 64DW. |
Thoughts on using eSATA:
If you plan to use external eSATA devices with 9x, assigned drive letterscan be an issue. Attaching a drive may cause drive letters to shift. Primarypartitions get the first drive letters in the order the drives are recognizedby BIOS, then extended partitions in the order the drives are recognizedby BIOS.
One way around that might be to use a 6421 card that does not have aBIOS (such cards are not bootable and can not be used from DOS). The advantageis since DOS does not see the drive, the drive letter does not become 'anchored'and Windows can assign it any drive letter similar to USB flash drives.
Another workaround might be to place the entire partition of the removabledrive inside an extended partition. This way the partition on the removabledrive should be assigned a drive letter after those of all partitions onthe first drive.
I discovered a useful utility for manually changing the assigned driveletters from DOS: http://sta.c64.org/dlmanip.html
Of course all drives will need to use FAT32 unless an additional filesystemdriver has been loaded.
Models of card:
The 6421 chip provides 2 SATA ports, and an IDE channel that can accommodate2 IDE devices. Most provide 1 SATA as internal and 1 external, some haveboth as internal.
SYBA SD-VIA-1A2S cards have a hard drive activity LED header. Most cardsdon't. Obviously this is important to have if using the controller fora primary hard drive. Supposedly 'pin 11' on a drive's SATA power connectorcan also also indicate drive activity but this requires a special poweradapter which is very rare. And to add to the activity LED annoyances,some cheaper SATA to IDE converters (like the Kingwin ADP-06) will notoperate the motherboard's IDE activity light.
Myanmar mp 3 free download. 6421s dated earlier than 10-04 (April 2010 or somewhere around there)may be unable to detect 3.0 or 6.0 gb/s drives. Most 3.0 gb/s drives havea jumper to force 1.5 gb/s operation, but 6.0 gb/s drives do not. Newer6421 chips do not have this problem.
6421 RAID
RAID functionality is implemented using software in the driver, anddoes not work under all OSes. I wouldn't bother with it and have nevertried it. If you need RAID get a hardware RAID card that makes the arraytransparent to the OS or use OSs provided software RAID if available.
Other options: The Vantec CB-SP200 Dual Port SATA to IDE Converter orits Single Port model are excellent for connecting new SATA hard drivesand CD drives to an existing IDE port. The upside is that these plug indirectly to the motherboard/controller so you can replace your bulky IDEcables with SATA cables. The downside is your motherboard BIOS and IDEdriver must already have support for LBA48 to make use of drive space over127gb.RAID functionality is implemented using software in the driver, anddoes not work under all OSes. I wouldn't bother with it and have nevertried it. If you need RAID get a hardware RAID card that makes the arraytransparent to the OS or use OSs provided software RAID if available.
KT7A Via LatencyPatch |
Via Latency Patch | ViaLat.zip |
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