MSI K7T Pro 2A cdrom dma problem

[johnjk]

I was having alot of lockups trying to transfer files with dma enabled for my cdrom. I disabled it and the trouble seemed to disappear. Any ideas? TIA?

 

[Adul]

older cd rom? what ide channels is it on? Are you suing the latest Via drivers?

 

[johnjk]

I've tried a 2x dvd and a 50x cdrom. Secondary master, and yes to the latest drivers. Thanks.

 

[John]

Did you do a clean install of the OS after changing motherboards?

 

[johnjk]

Not intially, but I eventually did. Guess I'll try a new cable. Thanks.

 

[johnjk]

No luck with the new cable. The computer rebooted right in the middle of transfer.

 

[John]

Does the cdrom play audio cd's and allow you to explore the disc contents?

 

[John]

Wait, which via 4-in-1's do you have installed?

 

[johnjk]

Actually, I haven't tried an audio cd. I installed the 4in1 drivers from the msi disk. I'm presently reformatting and reinstalling win98 right now, so I guess I'll dl the latest from via.

 

[Modus]

The 4-in-1's by default won't install the VIA IDE Busmaster driver because it's usually not necessary. If you're having problems, try installing the latest VIA IDE Busmaster Driver.

There are two modes of installation; I believe the first is called VXD and the second VSD. The VXD method seems to leave the default Windows drivers relatively intact, while apparently the VSD mode replaces them completely. When I had a similar problem with a similar system, I used VSD mode and it went away. (Mind you, at the same time I also switched the drive configuration to put both the CD and the CDRW on the same channel away from the hard drive and ZIP, so maybe that's what fixed it.)

If problems persist, you may have a defective IDE controller on your board. Try the latest BIOS update for the K7T Pro-2a too.

Modus

 

[John]

Yes, the 4.25a is the "official" ones you should use.

How many IDE devices do you have? Check your jumpers...

HDD should be master on Primary
CDROM master on Secondary

 

[Modus]

Oh, you gotta install the latest latest official 4-in-1's from VIA. That's a given.

[tirade]Never, ever even contemplate doing anything with the driver disc that comes bundled with any computer hardware besides cracking it in half and throwing it in the trash. There is never, ever a reason to use the old, buggy outdated drivers that most computer hardware ships with as opposed to the latest version easily found on the Net.[/tirade]

Modus

 

[johnjk]

Thanks guys. Got the latest drivers and I'm on my way to installing them. I've only got the hard drive (ibm 46.1g UDMA100) as master on primary ide, and the cd rom as master on the secondary ide. I updated the bios earlier. I'll keep you posted.

 

[johnjk]

Tried all those suggestions, no luck. Guess I may have a bad board.

 

[Overcrocker]

Argghhh...same problem here!!! Installing games or any kind of I/O activity over my DVD-ROM will have a good chance of locking up or rebooting my system. Problem will go away once I've disabled DMA for my DVD-ROM.

I've got the latest 4-in-1 VIA drivers....and all firmware updates are the latest. BIOS is also the latest from MSI.

Anyone with suggestion pls pls pls help me...I've spent 2 weeks of sleepless nights fixing this damn thing. I'm don't think the m'board is faulty because HDD works extremely well. I've changed to my old Creative 50x CD-ROM...same thing hangs when DMA is enabled. Thus my DVD-ROM is not faulty. I've moved the DVD-ROM from Secondary Master to Primary Slave...no avail, I've changed cables...dang lockup happens again. So its not Mobo, not DVD-ROM, not cable.....my only guess, driver bugs.

BTW, I've also disable SB16 Emulation..that thing is a bitch taking up 2 DMA channels. But still lockup happens...

Here's my banged up config
AMD Tbird 800
MSI K7T-Pro2A
Primary Master : 30GB Maxtor Diamond +45 (7200rpm)
Primary Slave : empty
Secondary Master : Pioneer 16x DVD-ROM
Secondary Slave : empty.
AGP : Creative GeForce2 GTS 32MB DDR
PCI 1 : empty
PCI 2 : empty
PCI 3 : SBLive Value! (IRQ 5 shared with PCI Steering)
PCI 4 : empty
PCI 5 : Accton 10/100 Mbps NIC
PCI 6 : empty (slot space used by 2 extra USB ports)

 

[billyjak]

Did you check the jumper pin on the CDRom, I know a few drives have this such as Aopen and Acer drives.

 

[Overcrocker]

Hi,

Hmmm....the only jumpers I know in a CDROM would be the Master/Slave jumper. Are there more jumpers than that?? I didn't check the jumpers since Win98 could detect my DVDROM so I assumed jumpers are correct. Can you pls clarify what these extra jumpers do??

Thanks for the tip

 

[Leo V]

On my MSI K7T Pro2A, enabling DMA for my DVD-ROM drive made it impossible to watch DVD movies. Definitely something here. I've sold off my last DVD movie and I now use a Plextor burner instead. Haven't yet encountered problems.

 

[tom3]

I had the same problems enabling DMA on a Toshiba 12X ide DVD drive too.. on a Pro2A that is

 

[Overcrocker]

Hmmm...u mention 'had', does that mean it was solved??

 

[Budman]

I had the same problem on my Aopen AK73pro, it would reboot itself every time i burned a cd.

What finally fixed it was installing the Via IDE drivers on their own,the 4in1 drivers seem to not install them correctly,after this i can burn cd's with no problems.

 

[tom3]

my problem was "solved" by disabling DMA on the DVD drive..
i thought it was a problem with the drive..

 

[KarlHungus]

Have any of you guys tried installing the latest firmware updates for your drives? I had a similar problem with my Plextor burner, but that (the firmware update) seemed to clear it up.

 

[johnjk]

Nope, but I did try 2 different drives.

 

[billmc]

same problem here, MSI K7TPro2A + DVD + DMA enabled. This will not work. Have been following other threads on same issue, seems that MSI has a motherboard problem here. As of yet, no one seems to be able to get any response from MSI on issue.

billmc