DMA problem

[Jarl60]

I have a Vaio FE11H notebook. I cannot get the DMA setting to stick on the ATA channel for the DVD/Cd drive. Keeps reverting to PIO. Have tried unistalling, etc. No luck. Any help appreciated!!

[Blencogo]

Hi Jarl60,

Reverting to PIO mode is usually caused by your DVD drive encountering errors when transfering data. After a few consecutive errors, Windows decides that the drive can only work in PIO mode and greys out the UDMA option. This tends to happen with dirty or scratched discs - rented DVDs can cause this.

Have you tried Uninstalling the "Primary IDE Channel" in Device Manager and rebooting? You will find this under "IDE ATA/ATAPI Controllers" in Device Manager. You need to uninstall it - disabling is not enough.

If this does not work, post back as the Registry may have to be edited.

[Jarl60]

Thanks for help. Have previously tried what you suggest; no dice.
Any further advice gratefully received.

[seb21__]

It could be a bad connection as well. The cable could be loosely or damaged.

Or a bad driver.