PIO and UDMA ?

[Zaknafein]

Hi,

Dunno why, sometimes XP sets my drives to PIO axc mode ?
I need to reinstall the controller in order to make it run properly...
Is there a way to force udma ?

thanks

Zaknafein (G.V.)

 

[Steve]

I had this problem. Usually XP uses PIO if the drive is having problems.
Simply uninstall the appropriate drive from device manager and restart.
Windows should re-install it, and you should have UDMA. If not, there is no
way to force it.

 

[Zaknafein]

Yep, couldn't find any other solutions...
Thank for the reply
cu

 

[Steve]

I just thought. You probably done it. Uninstall the IDE channel for that
drive and not the drive itself.

 

[NoNoBadDog!]

Are you using an Intel Motherboard?

Bobby

 

[Alex Nichol]

Dunno why, sometimes XP sets my drives to PIO axc mode ?
I need to reinstall the controller in order to make it run properly...
Is there a way to force udma ?

If for any reason there is a burst of errors on IDE devices, the
standard XP drivers will fall back to PIO mode on that device. And
stick, even if the cause goes away.

SO: you do not need to reinstall, but in Control Panel - System -
Hardware - Device Manager look under IDE ATA/ATAPI disk controllers for
the main controller (next line, above Primary) and Action - Uninstall.
Close down, power off, and check hardware - especially that cabling is
using proper 80 wire UDMA cables, and that the master drive, or only
drive, is on the end of the cable - with the central plug the slave or
unused. Reboot and let PnP start over.

If it still gives trouble on a device, it may pay to see if the BIOS has
a setting to put it on a lower DMA setting than nominal - better have
UDMA 33 working properly than UDMA 100 falling back to PIO